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  • Which design pattern is most appropriate?

    - by Anon
    Hello, I want to create a class that can use one of four algorithms (and the algorithm to use is only known at run-time). I was thinking that the Strategy design pattern sounds appropriate, but my problem is that each algorithm requires slightly different parameters. Would it be a bad design to use strategy, but pass in the relevant parameters into the constructor?. Here is an example (for simplicity, let's say there are only two possible algorithms) ... class Foo { private: // At run-time the correct algorithm is used, e.g. a = new Algorithm1(1); AlgorithmInterface* a; }; class AlgorithmInterface { public: virtual void DoSomething = 0; }; class Algorithm1 : public AlgorithmInterface { public: Algorithm1( int i ) : value(i) {} virtual void DoSomething(){ // Does something with int value }; int value; }; class Algorithm2 : public AlgorithmInterface { public: Algorithm2( bool b ) : value(b) {} virtual void DoSomething(){ // Do something with bool value }; bool value; };

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  • Java - How to declare table[i][j] elements as instance variables?

    - by JDelage
    All, I am trying to code a Connect4 game. For this, I have created a P4Game class and a P4Board class which represents the i X j dimensions of the Connect4 board. In P4Game, I have the following: public class P4Game{ //INSTANCE VARIABLES private int nbLines; private int nbColumns; private P4Board [][] position; //CONSTRUCTOR public P4Game(int nbLines, int nbColumns){ this.nbColumns = nbColumns; this.nbLines = nbLines; P4Board [][] position = new P4Board [nbLines][nbColumns]; //Creates the table to receive the instances of the P4Board object.*/ for (int i=0; i<nbLines; i++){ for (int j=0; j<nbColumns; j++){ this.position[i][j] = new P4Board(i,j); //Meant to create each object at (line=i, column=j) } } } This causes a NullPointerException in the nested loops where I mention this.position[i][j]. I reference those objects in other methods of this class so I need them to be instance variables. I suppose the exception is due to the fact that I have not listed the table element position[i][j] as an instance variable at the beginning of the class. my question to people here is (1) is my assumption correct, and if so (2) what would be the syntax to declare instance variables of this form? Thank you all for your help with what I realize is a very basic question. Hopefully it will also benefit other newbies. Cheers, JDelage

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  • Why is a menu item disabled when using SWTBot?

    - by reprogrammer
    I've written up a GUI test using SWTBot to test the Extract Method refactoring. I use editor.selectRange() to select a statement to extract into a method. But, when I run the unit test, the Extract Method refactoring menu item is disabled. Thus, SWTBot fails to invoke the refactoring. When we change org.eclipse.jdt.ui.actions.ExtractMethodAction so that the "Extract Method..." menu item is always enabled, our SWTBot passes. But, SWTBot should let us select the menu item without hacking the org.eclipse.jdt.ui plugin. The whole project containing the above unit test is available at github. I've also reported the problem on the Eclipse forum for SWTBot. But, we haven't received a solution from the forum.

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  • Jquery - Move Div around

    - by Chris
    Hi there guys, I am using Jquery Drag and drop to move divs across a page and this works perfectly. however what i would like is on each one of the div containers is to have a close button which when clicks removes the div from where it is and places it in a pre-defined div at the bottom like a widget gallery. How would this be accomplished? - below is my html.. thanks Chris <div class='column' id='leftcolumn'></div> <div class='column' id='rightcolumn'> <div class='dragbox'> <span class='close'>Close</span> Content In here </div> </div> <div class='column' id='widgetgallery></div>

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  • RemoteViewsService never gets called whenever we update app widget

    - by user3689160
    I am making one task widget application. This is a simple widget application which can be used to add new tasks by clicking on "+New Task". So ideally what I have done is, I've added a widget first, then when we click on "+New Task" a new activity opens up from where we can type in a new task and it should get updated in the ListView inside the home screen widget. Problem: Now whenever I add a new task, the ListView does not get updated. The data gets inside the database a new is created as well. My onUpdate(...) method gets called as well. There is a WidgetService.java which is a RemoteViewService that is being used to call the RemoteViewFactory but WidgetService.java gets called only when we create the widget, never after that. WidgetService.java never gets called again. I have the following setup MyWidgetProvider.java AppWidgetProvider class for updating the widget and filling its remote views. public class MyWidgetProvider extends AppWidgetProvider { public static int randomNumber=132; static RemoteViews remoteViews = null; @Override public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) { updateList(context,appWidgetManager,appWidgetIds); } public static void updateList(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds){ final int N = appWidgetIds.length; Log.d("MyWidgetProvider", "length="+appWidgetIds.length+""); for (int i = 0; i<N; ++i) { Log.d("MyWidgetProvider", "value"+ i + "="+appWidgetIds[i]); // Calling updateWidgetListView(context, appWidgetIds[i]); to load the listview with data remoteViews = updateWidgetListView(context, appWidgetIds[i]); // Updating the Widget with the new data filled remoteviews appWidgetManager.updateAppWidget(appWidgetIds[i], remoteViews); appWidgetManager.notifyAppWidgetViewDataChanged(appWidgetIds[i], R.id.lv_tasks); } } private static RemoteViews updateWidgetListView(Context context, int appWidgetId) { Intent svcIntent = null; remoteViews = new RemoteViews(context.getPackageName(),R.layout.widget_demo); //RemoteViews Service needed to provide adapter for ListView svcIntent = new Intent(context, WidgetService.class); //passing app widget id to that RemoteViews Service svcIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId); //setting a unique Uri to the intent //binding the data from the WidgetService to the svcIntent svcIntent.setData(Uri.parse(svcIntent.toUri(Intent.URI_INTENT_SCHEME))); //setting adapter to listview of the widget remoteViews.setRemoteAdapter(R.id.lv_tasks, svcIntent); //setting click listner on the "New Task" (TextView) of the widget remoteViews.setOnClickPendingIntent(R.id.tv_add_task, buildButtonPendingIntent(context)); return remoteViews; } // Just to create PendingIntent, this will be broadcasted everytime textview containing "New Task" is clicked and OnReceive method of MyWidgetIntentReceiver.java will run public static PendingIntent buildButtonPendingIntent(Context context) { Intent intent = new Intent(); intent.putExtra("TASK_DONE_VALUE_VALID", false); intent.setAction("com.ommzi.intent.action.CLEARTASK"); return PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT); } // This method is defined here so that we can update the remoteviews from other classes as well, like we'll do it in MyWidgetIntentReceiver.java public static void pushWidgetUpdate(Context context, RemoteViews remoteViews) { ComponentName myWidget = new ComponentName(context, MyWidgetProvider.class); AppWidgetManager manager = AppWidgetManager.getInstance(context); manager.updateAppWidget(myWidget, remoteViews); } } WidgetService.java A RemoteViewsService class for creating a RemoteViewsFactory. public class WidgetService extends RemoteViewsService { @Override public RemoteViewsFactory onGetViewFactory(Intent intent) { int appWidgetId = intent.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID,AppWidgetManager.INVALID_APPWIDGET_ID); return (new ListProvider(this.getApplicationContext(), intent)); } } ListProvider.java A RemoteViewsFactory class for filling the ListView inside the widget. public class ListProvider implements RemoteViewsFactory { private List<TemplateTaskData> tasks; private Context context = null; private int appWidgetId; int increment=0; public ListProvider(Context context, Intent intent) { this.context = context; appWidgetId = intent.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID,AppWidgetManager.INVALID_APPWIDGET_ID); //appWidgetId = Integer.valueOf(intent.getData().getSchemeSpecificPart())- MyWidgetProvider.randomNumber; populateListItem(); } private void populateListItem() { tasks = new ArrayList<TemplateTaskData>(); com.ommzi.database.sqliteDataBase letStartDB = new com.ommzi.database.sqliteDataBase(context); letStartDB.open(); tasks=letStartDB.getData(); letStartDB.close(); } public int getCount() { return tasks.size(); } public long getItemId(int position) { return position; } public RemoteViews getViewAt(int position) { // We are only showing the text view field here as there is limitation on using Checkbox within the widget // We prefer to on an activity for the user to make comprehensive changes as changes inside the widget is always limited. // To view the supported list of views for the widget you can visit http://developer.android.com/guide/topics/appwidgets/index.html final RemoteViews remoteView = new RemoteViews(context.getPackageName(), R.layout.screen_wcitem); TemplateTaskData taskDTO = tasks.get(position); Log.d("My ListProvider", "1"); remoteView.setTextViewText(R.id.wc_add_task, taskDTO.getTaskName()); if(taskDTO.getTaskDone()){ remoteView.setImageViewResource(R.id.imageView1, R.drawable.checked); }else{ remoteView.setImageViewResource(R.id.imageView1, R.drawable.unchecked); } Intent intent = new Intent(); intent.setAction("com.ommzi.intent.action.GETTASK"); intent.putExtra("TASK_DONE_VALUE_VALID", true); intent.putExtra("ROWID", taskDTO.getRowId()); intent.putExtra("TASK_NAME", taskDTO.getTaskName()); intent.putExtra("TASK_DONE_VALUE", taskDTO.getTaskDone()); remoteView.setOnClickPendingIntent(R.id.imageView1, PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT)); Log.d("My ListProvider, Inside getView", "Value of Incrementor=" + increment + "\n ROWID=" + taskDTO.getRowId() + "\n TASK_NAME=" + taskDTO.getTaskName() + "\n TASK_DONE_VALUE=" +taskDTO.getTaskDone() + "\n Total Database Size=" + tasks.size()); return remoteView; } public RemoteViews getLoadingView() { // TODO Auto-generated method stub return null; } public int getViewTypeCount() { // TODO Auto-generated method stub return 1; } public boolean hasStableIds() { // TODO Auto-generated method stub return false; } public void onCreate() { // TODO Auto-generated method stub } public void onDataSetChanged() { // TODO Auto-generated method stub } public void onDestroy() { // TODO Auto-generated method stub } } GetTaskActivity.java This is another activity that is fired from a BroadcastReceiver(MyWidgetIntentReceiver.java). Purpose of this is to get a new task added to the list of task. MyWidgetIntentReceiver.java BroadcastReceiver fired using a pending intent that starts an activity GetTaskActivity.java. Please help me out with this problem. I am seen all the posts here and on other websites no body is having any solution. But I am sure a solution exist to this. Thanks for your help!

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  • How to get an object from a list based upon IEqualityComparer<T>

    - by Greg
    The Compare method in Linq lets you find by an IEqualityComparer, but I can't find a counterpart method that allows you retrieve an item by the same comparer. Is this really the best way to do it? MyItem myFinderItem = new MyItem(keyField1, keyField2); if (myList.Contains(myFinderItem, new MyEqualityComparer())) { MyItem myRealItem = myList.Single(item => new MyEqualityComparer().Equals(item , myFinderItem)); } (I'm sharing the usage of the IEqualityComaprer with a call to the Except Linq method and I'd like to maintain a single source for equality comparisons)

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  • TabHost disappears after locking the phone and reopening it:

    - by Emil Adz
    I have a weird issue with my TabHost in my FragmentActivity that contains a ViewPager. The problem is that when I close my phone (press the power button) while I use my application, and then I turn back the phone and my application gets reopened, at this point my TabHost is missing. So the closing of my phone is causes the TabHost to disappear. My guess would be that I need to save my tabHost state in the saveInstanceState object, and restore it in onResume I only have no idea how it's done. here is my code for the FragmentActivity: public class TabsViewPagerFragmentActivity extends FragmentActivity implements ViewPager.OnPageChangeListener, TabHost.OnTabChangeListener { static final String TAG = TabsViewPagerFragmentActivity.class.getSimpleName(); private TabHost mTabHost; private ViewPager mViewPager; private HashMap<String, TabInfo> mapTabInfo; public ViewPagerAdapter mPagerAdapter; private TextView tvReportName, tvTabTitle; private Button bBackToParameters; private Dialog progressDialog; private SGRaportManagerAppObj application; private int numberOfTabs = 0; private Display display; public static final int POPUP_MARGIN = 6; LeftSideMenu leftSideMenu; public void NotifyTabActivityViewPagerAdapter() { mPagerAdapter.notifyDataSetChanged(); } public ViewPagerAdapter getTabActivityViewPagerAdapter() { return mPagerAdapter; } public ViewPager getTabActivityViewPager() { return mViewPager; } public void setCurrentTabTitle (String title) { tvTabTitle.setText(title); Log.d(TAG, "set tab title from activity: "+title); } /** * Maintains extrinsic info of a tab's construct */ private class TabInfo { private String tag; private Class<?> clss; private Bundle args; private Fragment fragment; TabInfo(String tag, Class<?> clazz, Bundle args) { this.tag = tag; this.clss = clazz; this.args = args; } } /** * A simple factory that returns dummy views to the Tabhost */ class TabFactory implements TabContentFactory { private final Context mContext; /** * @param context */ public TabFactory(Context context) { mContext = context; } /** (non-Javadoc) * @see android.widget.TabHost.TabContentFactory#createTabContent(java.lang.String) */ public View createTabContent(String tag) { View v = new View(mContext); v.setMinimumWidth(0); v.setMinimumHeight(0); return v; } } /** (non-Javadoc) * @see android.support.v4.app.FragmentActivity#onCreate(android.os.Bundle) */ public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); application = SGRaportManagerAppObj.getInstance(); display = ((WindowManager)getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay(); // Inflate the layout setContentView(R.layout.tabs_screen_activity_layout); tvTabTitle = (TextView) findViewById(R.id.tvTabName); tvReportName = (TextView)findViewById(R.id.tvReportName); tvReportName.setText(application.currentReport.getName()+ " - "); bBackToParameters = (Button) findViewById(R.id.bBackToParameters); leftSideMenu = (LeftSideMenu) findViewById(R.id.leftSideMenu); applyOnClickListenerToLeftSideMenu(); findViewById(R.id.showLeftMenuButton).setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Display d = ((WindowManager)getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay(); int width = d.getWidth(); View panel = findViewById(R.id.leftSideMenu); View appPanel = findViewById(R.id.appLayout); if (panel.getVisibility() == View.GONE){ appPanel.setLayoutParams(new LinearLayout.LayoutParams(width, LayoutParams.FILL_PARENT)); panel.setVisibility(View.VISIBLE); applyOnClickListenerToLeftSideMenu(); }else{ ToggleButton button = (ToggleButton) findViewById(R.id.showLeftMenuButton); button.setChecked(false); panel.setVisibility(View.GONE); } } }); // Initialise the TabHost progressDialog = DialogUtils.createProgressDialog(this, this.getString(R.string.populating_view_pager)); progressDialog.show(); if (SGRaportManagerAppObj.getInstance().parametersRepository.getParametersRepository().size() == 0) { bBackToParameters.setText(R.string.back_to_report_list); } this.initialiseTabHost(savedInstanceState); if (savedInstanceState != null) { mTabHost.setCurrentTabByTag(savedInstanceState.getString("tab")); //set the tab as per the saved state } // Intialise ViewPager this.intialiseViewPager(); progressDialog.dismiss(); } /** (non-Javadoc) * @see android.support.v4.app.FragmentActivity#onSaveInstanceState(android.os.Bundle) */ protected void onSaveInstanceState(Bundle outState) { outState.putString("tab", mTabHost.getCurrentTabTag()); //save the tab selected super.onSaveInstanceState(outState); } /** * Initialise ViewPager */ public void intialiseViewPager() { List<Fragment> fragments = new Vector<Fragment>(); // TabInfo tabInfo = null; if (application.getCurrentDataSource().equals(DataSource.SSRS)) { numberOfTabs = application.currentReport.getTabsList().size(); } else if (application.getCurrentDataSource().equals(DataSource.SGRDL)) { numberOfTabs = application.currentReport.getODTabsList().size(); Log.d(TAG, "CURRENT REPORT FROM VIEW PAGER: "+ application.currentReport.toString()); } Log.d(TAG,"Current Tabs number from TabsViewPager activity: " +numberOfTabs); if (application.getCurrentDataSource().equals(DataSource.SSRS)) { for (int i = 0; i < numberOfTabs; i++) { Tab tempTab = application.currentReport.getTabsList().get(i); if (tempTab.getTabTemplateId() == 7) { GridFragment gridFragment = new GridFragment(tempTab); fragments.add(gridFragment); } else if (tempTab.getTabTemplateId() == 8) { NewChartFragment chartFragment = new NewChartFragment(tempTab, this); fragments.add(chartFragment); } } } else if (application.getCurrentDataSource().equals(DataSource.SGRDL)) { for (int i = 0; i < numberOfTabs; i++) { ODTab tempTab = application.currentReport.getODTabsList().get(i); if (tempTab.getTabType().equals(ODGrid.XML_GRID_ELEMENT)) { GridFragment gridFragment = GridFragment.newInstance(tempTab.getTabId()); fragments.add(gridFragment); } else if (tempTab.getTabType().equals(ODChart.XML_CHART_ELEMENT)) { NewChartFragment chartFragment = NewChartFragment.newInstance(tempTab.getTabId()); fragments.add(chartFragment); } } } Log.d(TAG, "Current report fragments set to adapter: "+fragments.toString()); /* if (this.mPagerAdapter == null) { this.mPagerAdapter = new ViewPagerAdapter(super.getSupportFragmentManager(), fragments); } else { this.mPagerAdapter.removeAllFragments(); this.mPagerAdapter.addFragmentsListToAdapter(fragments); } */ this.mPagerAdapter = new ViewPagerAdapter(super.getSupportFragmentManager(), fragments); this.mViewPager = (ViewPager)super.findViewById(R.id.pager); // this.mViewPager.setAdapter(null); this.mViewPager.setAdapter(this.mPagerAdapter); this.mViewPager.setOffscreenPageLimit(0); this.mViewPager.setOnPageChangeListener(this); Log.d(TAG, "Adapter initialized!"); } /** * Initialise the Tab Host */ public void initialiseTabHost(Bundle args) { mTabHost = (TabHost)findViewById(android.R.id.tabhost); /* //new edit if (mTabHost.getChildCount() > 0) { mTabHost.removeAllViews(); } */ mTabHost.setup(); TabInfo tabInfo = null; mapTabInfo = new HashMap<String, TabsViewPagerFragmentActivity.TabInfo>(); if (args != null) {} else { if (application.getCurrentDataSource().equals(DataSource.SSRS)) { int numberOfTabs = application.currentReport.getTabsList().size(); for (int i = 0; i < numberOfTabs; i++) { Tab tempTab = application.currentReport.getTabsList().get(i); if (tempTab.getTabTemplateId() == 7) { //GridFragment gridFragment = new GridFragment(tempTab); TabsViewPagerFragmentActivity.AddTab(this, this.mTabHost, this.mTabHost.newTabSpec("Tab "+String.valueOf(i)).setIndicator("Tab "+String.valueOf(i)), ( tabInfo = new TabInfo("Tab "+String.valueOf(i), GridFragment.class, args))); this.mapTabInfo.put(tabInfo.tag, tabInfo); } else if (tempTab.getTabTemplateId() == 8) { TabsViewPagerFragmentActivity.AddTab(this, this.mTabHost, this.mTabHost.newTabSpec("Tab "+String.valueOf(i)).setIndicator("Tab "+String.valueOf(i)), ( tabInfo = new TabInfo("Tab "+String.valueOf(i), NewChartFragment.class, args))); this.mapTabInfo.put(tabInfo.tag, tabInfo); } } } else if (application.getCurrentDataSource().equals(DataSource.SGRDL)) { int numberOfTabs = application.currentReport.getODTabsList().size(); for (int i = 0; i < numberOfTabs; i++) { ODTab tempTab = application.currentReport.getODTabsList().get(i); // Log.d(TAG,"Crashed Tab type: "+ tempTab.getTabType()); if (tempTab.getTabType().equals(ODGrid.XML_GRID_ELEMENT)) { //GridFragment gridFragment = new GridFragment(tempTab); TabsViewPagerFragmentActivity.AddTab(this, this.mTabHost, this.mTabHost.newTabSpec("Tab "+String.valueOf(i)).setIndicator("Tab "+String.valueOf(i)), ( tabInfo = new TabInfo("Tab "+String.valueOf(i), GridFragment.class, args))); this.mapTabInfo.put(tabInfo.tag, tabInfo); } else if (tempTab.getTabType().equals(ODChart.XML_CHART_ELEMENT)) { TabsViewPagerFragmentActivity.AddTab(this, this.mTabHost, this.mTabHost.newTabSpec("Tab "+String.valueOf(i)).setIndicator("Tab "+String.valueOf(i)), ( tabInfo = new TabInfo("Tab "+String.valueOf(i), NewChartFragment.class, args))); this.mapTabInfo.put(tabInfo.tag, tabInfo); } } } } // Default to first tab //this.onTabChanged("Tab1"); // mTabHost.setOnTabChangedListener(this); } /** * Add Tab content to the Tabhost * @param activity * @param tabHost * @param tabSpec * @param clss * @param args */ private static void AddTab(TabsViewPagerFragmentActivity activity, TabHost tabHost, TabHost.TabSpec tabSpec, TabInfo tabInfo) { // Attach a Tab view factory to the spec ImageView indicator = new ImageView(activity.getBaseContext()); indicator.setPadding(10, 10, 10, 10); indicator.setImageResource(R.drawable.tab_select_icon_selector); LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT); lp.setMargins(10, 10, 10, 10); indicator.setLayoutParams(lp); tabSpec.setIndicator(indicator); tabSpec.setContent(activity.new TabFactory(activity)); tabHost.addTab(tabSpec); } /** (non-Javadoc) * @see android.widget.TabHost.OnTabChangeListener#onTabChanged(java.lang.String) */ public void onTabChanged(String tag) { //TabInfo newTab = this.mapTabInfo.get(tag); int pos = this.mTabHost.getCurrentTab(); this.mViewPager.setCurrentItem(pos); } /* (non-Javadoc) * @see android.support.v4.view.ViewPager.OnPageChangeListener#onPageScrolled(int, float, int) */ @Override public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) { // TODO Auto-generated method stub } /* (non-Javadoc) * @see android.support.v4.view.ViewPager.OnPageChangeListener#onPageSelected(int) */ @Override public void onPageSelected(int position) { // TODO Auto-generated method stub this.mTabHost.setCurrentTab(position); } /* (non-Javadoc) * @see android.support.v4.view.ViewPager.OnPageChangeListener#onPageScrollStateChanged(int) */ @Override public void onPageScrollStateChanged(int state) { // TODO Auto-generated method stub } How would one save the state of the TabHost and restore it in onResume? Any help would be very appreciated.

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  • System.Interactive: Difference between Memoize() and MemoizeAll()?

    - by Joel Mueller
    In System.Interactive.dll (v1.0.2521.0) from Reactive Extensions, EnumerableEx has both a Memoize method and a MemoizeAll method. The API documentation is identical for both of them: Creates an enumerable that enumerates the original enumerable only once and caches its results. However, these methods are clearly not identical. If I use Memoize, my enumerable has values the first time I enumerate it, and seems to be empty the second time. If I use MemoizeAll then I get the behavior I would expect from the description of either method - I can enumerate the result as many times as I want and get the same results each time, but the source is only enumerated once. Can anyone tell me what the intended difference between these methods is? What is the use-case for Memoize? It seems like a fairly useless method with really confusing documentation.

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  • How can I find all attributes with single quotes in a Sublime Text 2 document and replace with double quotes?

    - by Brandon Durham
    I'm feeling particularly nit-picky today. I'm working in some HTML docs that have single quotes around all attribute values through the docs, like this: <div class='classone classtwo'> I'd love to be able to do a find-and-replace in each doc and replace with double quotes, like this: <div class="classone classtwo"> Many elements in the document will have multiple attributes: <div class='classone classtwo' data-scripts='lazyload'> And some will have the correct double quotes: <div class='classone classtwo' data-scripts="lazyload"> What's the best way to replace all single quotes wrapping values with double?

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  • problm with MANIFEST.MF in jar

    - by Atul
    hi I have created jar in the following folder: /usr/local/bin/niidle.jar. And my MANIFEST.MF file is as follows: Manifest-Version: 1.0 Main-Class: com.ensarm.niidle.web.scraper.NiidleScrapeManager Class-Path: hector-0.6.0-17.jar And I verified that,this 'hector-0.6.0-17.jar' file is also present in the folder: /Projects/EnwelibDatedOct13/Niidle/lib/hector-0.6.0-17.jar I don't want to give full class-path name in MANIFEST.MF file,because I have to run this jar on other's machine,so I gave only jar file name 'Class-Path=hector-0.6.0-17.jar' in MANIFEST.MF file. Inspite of mentioning the Class-Path in MANIFEST.MF file, when I run this using command: java -jar /usr/local/bin/niidle.jar arguments... It is showing error massage: --Exception in thread "main" java.lang.NoClassDefFoundError: me/prettyprint/hector/api/Serializer at com.ensarm.niidle.web.scraper.NiidleScrapeManager.main(NiidleScrapeManager.java:21) Caused by: java.lang.ClassNotFoundException: me.prettyprint.hector.api.Serializer at java.net.URLClassLoader$1.run(URLClassLoader.java:200) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:307) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:252) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320) ... 1 more Please give me solution for this error message..

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  • How to import your own non-packaged Java classes in Jython

    - by thepandaatemyface
    I know in Jython you can do import java.util.Random as Random Random().nextInt() But if I have a class I wrote myself, how can I import it into Jython without putting the class itself in a package? If I have a testclass Test: public class Test { public void foo() { System.out.println("bar"); } } that's not inside a package. Can I even import that into jython by using something along the lines offrom Test import Test?

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  • How can I login in a website with Pyhon?

    - by Shady
    How can I do it? I was trying to enter some specified link (with urllib), but to do it, I need to log. I have this source from the site <form id="login-form" action="auth/login" method="post"> <div> <!--label for="rememberme">Remember me</label><input type="checkbox" class="remember" checked="checked" name="remember me" /--> <label for="email" id="email-label" class="no-js">Email</label> <input id="email-email" type="text" name="handle" value="" autocomplete="off" /> <label for="combination" id="combo-label" class="no-js">Combination</label> <input id="password-clear" type="text" value="Combination" autocomplete="off" /> <input id="password-password" type="password" name="password" value="" autocomplete="off" /> <input id="sumbitLogin" class="signin" type="submit" value="Sign In" /> It's possible?

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  • Trouble with setting entry point for GWT service

    - by Xorty
    Hello. I've followed serveral tutorials and read official docs at code.google.com, but still didn't manage to resolve this thing. I am creating simple service that'll check if user can be logged. CLIENT SIDE: public interface LoginService extends RemoteService { /** * Checks, if user has valid login. * @param user User's login. * @return True if such a login is in the database. */ boolean isValidUser(User user); } And here is Async interface: public interface LoginServiceAsync { /** * Checks, if user has valid login. * @param user User's login. * @param callback the callback to return True if such a login is in the database. */ void isValidUser(User user, AsyncCallback<Boolean> callback); } SERVER SIDE: public class LoginServiceImpl extends RemoteServiceServlet implements LoginService { /** * serial version UID */ private static final long serialVersionUID = 1044980345057997696L; /**{@inheritDoc} */ @Override public boolean isValidUser(User user) { boolean success = true; //TODO change } } Now I have entry point class MailClient.java. I append here widget like: CustomWidgets.getLoginWidget(this); // access rootPanel and append widget Now I need to make actual call to my service, and here is problem: LoginServiceAsync loginService = (LoginServiceAsync) GWT.create(LoginService.class); User user = new User(boxName.getText(), boxPassword.getText()); AsyncCallback<Boolean> callback = new AsyncCallback<Boolean>() { @Override public void onFailure(Throwable caught) { Window.alert(caught.getMessage()); //TODO change } @Override public void onSuccess(Boolean result) { Window.alert("success"); //TODO change } }; ((ServiceDefTarget) loginService).setServiceEntryPoint(GWT.getModuleBaseURL()+"login"); // dunno what should be here So to recap, I don't know how to set service's entry point. Here's my MailClient.gwt.xml file: <module> <inherits name="com.google.gwt.user.User"/> <inherits name="com.google.gwt.user.theme.standard.Standard"/> <entry-point class="com.xorty.mailclient.client.MailClient"/> <servlet path="/login" class="com.xorty.mailclient.server.servlets.LoginServiceImpl" /> <inherits name="com.xorty.mailclient.MailClient"/> <inherits name="com.xorty.mailclient.MailClient"/> <inherits name="com.xorty.mailclient.MailClient"/> <inherits name="com.xorty.mailclient.MailClient"/> <inherits name="com.xorty.mailclient.MailClient"/> </module> My web.xml file: <?xml version="1.0" encoding="UTF-8"?> <web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"> <!-- Default page to serve --> <welcome-file-list> <welcome-file>MailClient.html</welcome-file> </welcome-file-list> <servlet> <servlet-name>LoginService</servlet-name> <servlet-class>com.xorty.mailclient.server.servlets.LoginServiceImpl</servlet-class> </servlet> <servlet-mapping> <servlet-name>LoginService</servlet-name> <url-pattern>/com.xorty.mailclient.MailClient/login</url-pattern> </servlet-mapping> </web-app> And here is screenshot of project structure:

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  • android error NoSuchElementException

    - by Alexander
    I have returned a cursor string but it contains a delimiter. The delimiter is . I have the string quest.setText(String.valueOf(c.getString(1)));I want to turn the into a new line. What is the best method to achieve this task in android. I understand there is a way to get the delimeter. I want this to achieved for each record. I can itterate through record like so. Cursor c = db.getContact(2); I tried using a string tokenizer but it doesnt seem to work. Here is the code for the tokenizer. I tested it in just plain java and it works without errors. String question = c.getString(1); // quest.setText(String.valueOf(c.getString(1))); //quest.setText(String.valueOf(question)); StringTokenizer st = new StringTokenizer(question,"<ENTER>"); //DisplayContact(c); // StringTokenizer st = new StringTokenizer(question, "=<ENTER>"); while(st.hasMoreTokens()) { String key = st.nextToken(); String val = st.nextToken(); System.out.println(key + "\n" + val); } I then tried running it in android. Here is the error log 06-06 22:31:55.251: E/AndroidRuntime(537): FATAL EXCEPTION: main 06-06 22:31:55.251: E/AndroidRuntime(537): java.util.NoSuchElementException 06-06 22:31:55.251: E/AndroidRuntime(537): at java.util.StringTokenizer.nextToken(StringTokenizer.java:208) 06-06 22:31:55.251: E/AndroidRuntime(537): at alex.android.test.database.quiz.TestdatabasequizActivity$1.onClick(TestdatabasequizActivity.java:95) 06-06 22:31:55.251: E/AndroidRuntime(537): at android.view.View.performClick(View.java:3511) 06-06 22:31:55.251: E/AndroidRuntime(537): at android.view.View$PerformClick.run(View.java:14105) 06-06 22:31:55.251: E/AndroidRuntime(537): at android.os.Handler.handleCallback(Handler.java:605) 06-06 22:31:55.251: E/AndroidRuntime(537): at android.os.Handler.dispatchMessage(Handler.java:92) 06-06 22:31:55.251: E/AndroidRuntime(537): at android.os.Looper.loop(Looper.java:137) 06-06 22:31:55.251: E/AndroidRuntime(537): at android.app.ActivityThread.main(ActivityThread.java:4424) 06-06 22:31:55.251: E/AndroidRuntime(537): at java.lang.reflect.Method.invokeNative(Native Method) 06-06 22:31:55.251: E/AndroidRuntime(537): at java.lang.reflect.Method.invoke(Method.java:511) 06-06 22:31:55.251: E/AndroidRuntime(537): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784) 06-06 22:31:55.251: E/AndroidRuntime(537): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551) 06-06 22:31:55.251: E/AndroidRuntime(537): at dalvik.system.NativeStart.main(Native Method) This is the database query public Cursor getContact(long rowId) throws SQLException { Cursor mCursor = db.query(true, DATABASE_TABLE, new String[] {KEY_ROWID, question, possibleAnsOne,possibleAnsTwo, possibleAnsThree,realQuestion,UR}, KEY_ROWID + "=" + rowId, null, null, null, null, null); if (mCursor != null) { mCursor.moveToFirst(); }

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  • Is the Java classpath final after JVM startup?

    - by Jens
    Hi, I have read a lot about the Java class loading process lately. Often I came across texts that claimed that it is not possible to add classes to the classpath during runtime and load them without class loader hackery (URLClassLoaders etc.) As far as I know classes are loaded dynamically. That means their bytecode representation is only loaded and transformed to a java.lang.Class object when needed. So shouldn't it be possible to add a JAR or *.class file to the classpath after the JVM started and load those classes, provided they haven't been loaded yet? (To be clear: In this case the classpath is simple folder on the filesystem. "Adding a JAR or *.class file" simply means dropping them in this folder.) And if not, does that mean that the classpath is searched on JVM startup and all fully qualified names of the found classes are cached in an internal "list"? It would be nice of you if you could point me to some sources in your answers. Preferably the offical SUN documentation: Sun JVM Spec. I have read the spec but could not find anything about the classpath and if it's finalized on JVM startup. P.s. This is a theoretical question. I just want to know if it is possible. There is nothing practical I want to achieve. There is just my thirst for knowledge :)

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  • Use of GORM methods in Integration test

    - by canotto90
    I'm trying to use gorm find method on my domain class, inside of an Spock Integration Spec. My code: class myDomainClassSpec extends IntegrationSpec{ ... def 'my test'() { when: ... then: MyDomainClass.find { id == 1 } } ... } This fails, throwing: groovy.lang.MissingPropertyException: No such property: id for class: grails.gorm.DetachedCriteria If instead I code: MyDomainClass.findAll().find { id == 1 } it works. Any ideas??

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  • PHP + MySQL - Match first letter of directory

    - by user1822825
    Let's say I have a class table. In the class table, there are many students with their pictures. In the first registration, I've registered the class and students with pictures. The pictures were put into a directory like classid_classname. Then, I change the class name. Now, I'm adding the student's picture. Now, the new picture can't be recognized because the class name has changed. The pic url will be set as classid_class(new)name. How can I match the first letter of the directory? This is my update code : $classID= $_POST["classID"]; $className= $_POST["className"]; $p1 = $_FILES['p1']['name']; $p2 = $_FILES['p2']['name']; $p3 = $_FILES['p3']['name']; $direct = $_POST["className"]; $direct = strtolower($direct); $direct = str_replace(' ', '_', $direct); $tfish = $classID."_".$direct; //the directory variable will have new name because it can't be fetched if the directory has been changed many times// $file = "slider_imagesClass/".$tfish."/"; $url = "/".$tfish."/"; How can I make the variable to match the first letter of the directory because the classID will not change? Thank you. Really appreciate your help :D

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  • another onmouseover problem this one concerns pictures

    - by user334118
    Hi all! have problems with mouseover in Mozilla and Chrome after making it work in IE, for sure I can tell you that my code woked perfectly in Chrome at least, cause thats my default browser and I used it for debuging when creating the javascipt and it worked nicely... until I tried to make it work in IE too. Here I post the full code of the webpage I'm having trouble with. <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebbShop.aspx.cs" Inherits="FSwebportal.WebbShop" %> .prodShow{width: 100%; text-align:center;border:0; float:right; position:inherit; padding-left:310px;} prodFollow{display:block; width:100%; height:100%; position:fixed; overflow:hidden;} orderSett{display:block; position:relative; float:left; padding-top:inherit;} .ShowBig{width:290px;height:290px; padding-top:10px;} .pTb{width:50px;} .order{background-color:Transparent;margin:3px;} .txtArea{border:0;overflow:auto;width:200px;height:100px;} .prodRow{background-image:url("produktbakgrund.png"); background-repeat:repeat;} .row{background-color:Transparent;width:100%;margin: 0px auto;display:inline-table;} .col{background-color:Transparent;width:100%;margin:3px;} <div id="prodFollow"> <table id="dumbTable"> <tr> <td> <img id="sideImg" class="ShowBig" src="" alt=""/> </td> </tr> <tr> <td> <h3><b>Specifikationer:</b></h3> <select name=""> </select> </td> </tr> </table> </div> <table id="itemList" class="prodShow" cellspacing="0"> <thead> <tr class="prodRow"> <th>Bild</th> <th>Förklaring</th> <th>Artikelnummer</th> <th>Pris</th> </tr> </thead> </table> <script type="text/javascript"> function appendRow() { var tbl = document.getElementById('itemList'); var len = <%= aspInfo.Count %>; var arr = new Array(len); var currIndex = 0; var imgID=0; <% for (int x = 0; x < aspInfo.Count; x++) { Response.Write("arr["+x+"]= '"+ aspInfo[x]+"';"); } %> for(row =0; row < arr.length/4;row++) { var rad = tbl.insertRow(tbl.rows.length); rad.setAttribute('class','prodRow'); for (c = 0; c < tbl.rows[row].cells.length; c++) { if(c < 1) { createCell(rad.insertCell(c), arr[currIndex], 'col',imgID); imgID++; } else { if(c < 3) { createCell(rad.insertCell(c),"<Label class=txtArea>" + arr[currIndex] + "</Label>", 'row',imgID); } else { createCell(rad.insertCell(c),"<Label class=txtArea>" + arr[currIndex] + " SKR</Label><br>Antal:<input type=text class=pTb /><input type=button width=100px value='Lägg i varukorg'></input>", 'order',imgID); } } currIndex++; } } } function createCell(cell, text, style,imgID) { if (style == 'col') { var arrLen = <% = largeImg.Count %>; var imgArr = new Array(arrLen); <% for (int x = 0; x < largeImg.Count; x++) { Response.Write("imgArr["+x+"]= '"+ largeImg[x]+"';"); } %> var div = document.createElement('div'); div.setAttribute('class', style); div.setAttribute('className', style); div.innerHTML = "<a href='#'><img id='" + imgID + "' src='" + text + "' onmouseover=javascript:onImg('" + imgArr[imgID] + "') border='0' alt='Animg' /></a>"; cell.appendChild(div); } else { var div = document.createElement('div'); div.setAttribute('class', style); div.setAttribute('className', style); div.innerHTML = text; cell.appendChild(div); } } </script> <script type="text/javascript" language="javascript"> function onImg(bigImg) { var img = document.getElementById('sideImg#'); img.src = bigImg; alert(img.src.toString()); } </script> </form> hope you guys can solve it for me, going mad! best regards David

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  • What is the best IDE to use with the Symfony framework?

    - by Failpunk
    I'm looking for an IDE with use with the Symfony Framework. I have a bit of experience using the NetBeans 6.5 IDE but it does not always seem to complete the class methods, plus it doesn't seem to have any PHP code snippets built in. Here are the features I would ideally like to have, in order of importance, from an IDE: Code completion of all the Symfony and Propel class methods (I can never remember them) Code templates,(class skeletons, HTML structures, Symfony templates?) Straight-forward code debugging Source Control

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  • [hibernate - jpa] @OneToOne annotoation problem (i think...)

    - by blow
    Hi all, im new in hibernate and JPA and i have some problems with annotations. My target is to create this table in db (PERSON_TABLE with personal-details) ID ADDRESS NAME SURNAME MUNICIPALITY_ID First of all, i have a MUNICIPALITY table in db containing all municipality of my country. I mapped this table in this ENTITY: @Entity public class Municipality implements Serializable { @Id @GeneratedValue(strategy=GenerationType.IDENTITY) private Long id; private String country; private String province; private String name; @Column(name="cod_catasto") private String codCatastale; private String cap; public Municipality() { } ... Then i make an EMBEDDABLE class Address containing fields that realize a simple address... @Embeddable public class Address implements Serializable { @OneToOne(cascade=CascadeType.ALL) @JoinColumn(name="id_municipality") private Municipality municipality; @Column(length=45) private String address; public Address() { } ... Finally i embedded this class into Person ENTITY @Entity public class Person implements Serializable { @Id @GeneratedValue(strategy=GenerationType.IDENTITY) private Long id; private String name; private String surname; @Embedded private Address address; public Person() { } ... All works good when i have to save a new Person record, in fact hibernate creates a PERSON_TABLE as i want, but if i try to retrieve a Person record i have an exception. HQL is simply "from Person" The excpetion is (Entities is the package containing all classes above-mentioned): org.hibernate.AnnotationException: @OneToOne or @ManyToOne on Entities.Person.address.municipality references an unknown entity: Entities.Municipality Is the @OneToOne annotation the problem? Thanks.

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  • setting actionscript 3 superclass variables

    - by jedierikb
    In AS3, if I have a class such: public class dude { //default value for a dude protected var _strength:Number = 1; public function dude( ):void { super( ); //todo... calculate abilities of a dude based on his strength. } } and a subclass public class superDude extends dude { public function superDude( ):void { _strength = 100; super( ); trace( "strength of superDude: " + _strength ); } } This will trace strength of superDude is 1. I expected the variable I set in the subclass (prior to calling the superclass constructor) to remain. Is there a way to assign class variables in subclass constructors which are not over-written by the superclass construtor? Or should I pass them up as constructor variables?

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  • Can i have One form tag inside Another in ASP.net MVC RC2

    - by coolguy97
    Hi all, I am currently Developing application in MVC2 I have want to used mutiple form tags in My application In My View I have Created a table which has Delete option which i am doing through Post for Individual Delete so i have Create form tag for each button. i also want user to give option to delete mutiple records so i am providing them with checkboxes.This form should have all the values of checkboxes and all. so form gets render Like this for Each delete button <form action="/Home/MutipleDelete" method="post"> <input class="button " name="Compare" type="submit" value="Mutipledelete" style="margin-right:132px;" /> <input id="chk1" name="chk1" type="checkbox" value="true" /> <form action="/Home/Delete" method="post"> <input type="submit" class="submitLink" value="member1" /> <input type="hidden" name="hfmem1" id="hfmem1" value="1" /> </form> <input id="chk2" name="chk2" type="checkbox" value="true" /> <form action="/Home/Delete" method="post"> <input type="submit" class="submitLink" value="member2" /> <input type="hidden" name="hfmem2" id="hfmem2" value="2" /> </form> </form> The following is not working . but IF i write my code that form renders in this way <form action="/Home/MutipleDelete" method="post"> <input class="button " name="Compare" type="submit" value="Mutipledelete" style="margin-right:132px;" /> </form> <input id="chk1" name="chk1" type="checkbox" value="true" /> <form action="/Home/Delete" method="post"> <input type="submit" class="submitLink" value="member1" /> <input type="hidden" name="hfmem1" id="hfmem1" value="1" /> </form> <input id="chk2" name="chk2" type="checkbox" value="true" /> <form action="/Home/Delete" method="post"> <input type="submit" class="submitLink" value="member2" /> <input type="hidden" name="hfmem2" id="hfmem2" value="2" /> </form> it is working in Mozilla but not in IE.I have debug and Checked values in formcollection In contoller.What to do.?

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  • Which design is better (OO Design)?

    - by Tattat
    I have an "Enemy" object, that have many "gun" . Each "gun" can fire "bullet". Storing "gun" is using an array. when the "gun" is fired, the "bullet" will be created. And the enemy object will have an array to store the "bullet". So, I am thinking about the fire method. I am think making a firebulletFromGun in the "enemy". It need have a parameter: "gun". while this method is called. The "enemy" 's bullet will be added in the Array. Another design is writing the fire method in the "gun". The "enemy" use the "gun"'s fire method. And the "gun" will return a "bullet" object, and it will be added in the Array of "enemy". Both method can work, but which way is better? or they are similar the same? plx drop ur ideas/suggestions. thz.

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  • Exception handling protocol for methods

    - by athena
    Is there any specific protocol for handling exceptions in public methods? Consider this eg. public int someMethod() { try{ code that might throw an exception } catch(Exception e) { log the exception } } Say that this method might throw an ArrayIndexOutOfBoundsException. So, is it correct to handle this Exception in the method itself (as in the example) or throw it and assume that the calling method will handle the Exception?

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  • Wrapper Classes for Backward compatibility in Java

    - by Casebash
    There is an interesting article here on maintaing backwards compatibility for Java. In the wrapper class section, I can't actually understand what the wrapper class accomplishes. In the following code from MyApp, WrapNewClass.checkAvailable() could be replaced by Class.forName("NewClass"). static { try { WrapNewClass.checkAvailable(); mNewClassAvailable = true; } catch (Throwable ex) { mNewClassAvailable = false; } } Consider when NewClass is unavailable. In the code where we use the wrapper (see below), all we have done is replace a class that doesn't exist, with one that exists, but which can't be compiled as it uses a class that doesn't exist. public void diddle() { if (mNewClassAvailable) { WrapNewClass.setGlobalDiv(4); WrapNewClass wnc = new WrapNewClass(40); System.out.println("newer API is available - " + wnc.doStuff(10)); }else { System.out.println("newer API not available"); } } Can anyone explain why this makes a difference? I assume it has something to do with how Java compiles code - which I don't know much about.

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