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  • [JAX-B] How can I ignore a superclass?

    - by MrSpandex
    I'm trying to write a web service for the java.util.logging api. So I wrote a class MyLogRecord that inherits from LogRecord. I annotated this class with JAX-B annotations, including @XmlAccessorType(XmlAccessType.NONE) so it would ignore non-annotated fields and properties. When I start up tomcat, I get errors that java.util.logging.Level and other java.util.logging classes do not have a default constructor, but none of my annotated methods make any reference to the Level class or any of the other java.util.logging classes. These are referenced by the parent class. My sub-class has everything it needs defined. How can I get JAX-B to ignore the parent class completely? Update: I found another post on this, which suggests modifying the parent class. This is obviously not possible because I am extending a java.util class. IS there any way to do this without modifying the superclass? Update2: I found a thread on java.net for a similar problem. That thread resulted in an enhancement request, which was marked as a duplicate of another issue, which resulted in the @XmlTransient annotation. The comments on these bug reports lead me to believe this is impossible in the current spec.

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  • Make my radio buttons become selected in Android

    - by NickTFried
    When I run this could and click on the dialog box my radiobuttons do not become selected like intended package edu.elon.cs.mobile; import edu.elon.cs.mobile.R; import edu.elon.cs.mobile.R.id; import edu.elon.cs.mobile.R.layout; import android.app.Activity; import android.app.AlertDialog; import android.content.DialogInterface; import android.os.Bundle; import android.text.Editable; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.EditText; import android.widget.RadioButton; import android.widget.TextView; import android.widget.Toast; public class PTCalculator extends Activity{ private RadioButton maleRadioButton; private RadioButton femaleRadioButton; private EditText ageEdit; private EditText pushUpsEdit; private EditText sitUpsEdit; private EditText mileMinEdit; private EditText mileSecEdit; private Button calculate; private TextView score; protected AlertDialog genderAlert; private int currScore; private int age; private int sitUps; private int runTime; private int pushUps; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.pt); maleRadioButton = (RadioButton) findViewById(R.id.male); femaleRadioButton = (RadioButton) findViewById(R.id.female); ageEdit = (EditText) findViewById(R.id.ageEdit); pushUpsEdit = (EditText) findViewById(R.id.pushupEdit); sitUpsEdit = (EditText) findViewById(R.id.situpEdit); mileMinEdit = (EditText) findViewById(R.id.minEdit); mileSecEdit = (EditText) findViewById(R.id.secEdit); calculate = (Button) findViewById(R.id.calculateButton); calculate.setOnClickListener(calculateButtonListener); score = (TextView) findViewById(R.id.scoreView); genderAlert = makeGenderDialog().create(); } private OnClickListener calculateButtonListener = new OnClickListener() { @Override public void onClick(View arg0) { age = (Integer.parseInt(ageEdit.getText().toString())); pushUps = (Integer.parseInt(pushUpsEdit.getText().toString())); sitUps = (Integer.parseInt(sitUpsEdit.getText().toString())); int min = (Integer.parseInt(mileMinEdit.getText().toString())*60); int sec = (Integer.parseInt(mileSecEdit.getText().toString())); runTime = min + sec; if(maleRadioButton.isChecked()){ MalePTTest mPTTest = new MalePTTest(age, pushUps, sitUps, runTime); currScore = mPTTest.malePTScore(); score.setText((Integer.toString(currScore))); }else if(femaleRadioButton.isChecked()){ FemalePTTest fPTTest = new FemalePTTest(age, pushUps, sitUps, runTime); currScore = fPTTest.femalePTScore(); score.setText((Integer.toString(currScore))); }else genderAlert.show(); } }; public AlertDialog.Builder makeGenderDialog(){ AlertDialog.Builder builder = new AlertDialog.Builder(this); builder.setMessage("Select a Gender") .setCancelable(false) .setPositiveButton("Female", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { femaleRadioButton.setSelected(true); FemalePTTest fPTTest = new FemalePTTest(age, pushUps, sitUps, runTime); currScore = fPTTest.femalePTScore(); score.setText((Integer.toString(currScore))); } }) .setNegativeButton("Male", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { maleRadioButton.setSelected(true); MalePTTest mPTTest = new MalePTTest(age, pushUps, sitUps, runTime); currScore = mPTTest.malePTScore(); score.setText((Integer.toString(currScore))); } }); return builder; } } Any suggestions?

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  • Java Properties and References -- I'm not getting what I expect.

    - by Blumer
    I'm a little embarrassed to ask this as I ought to know better, but here's what I've got. I have an object "Pitcher" with an int property of "runsAllowed". I have an object Batter that has a property of "responsiblePitcher". I have an object Team that has a property "pitcher". When the batter reaches base: Batter.responsiblePitcher = Team.pitcher; All that's well and good. However, if we have a pitching change while the runner is on base, I set a new pitcher in Team.pitcher: Team.pitcher = new Pitcher(); ... and of course this changes the value of Batter.pitcher. How should I be doing things differently such that the Batter.responsiblePitcher property continues to point to the pitcher who let him on base instead of pointing at whever is in the Team.pitcher property? Again, I feel like I ought to know this already ... Thanks.

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  • Java: Combination of recursive loops which has different FOR loop inside; Output: FOR loops indexes

    - by vvinjj
    currently recursion is fresh & difficult topic for me, however I need to use it in one of my algorithms. Here is the challenge: I need a method where I specify number of recursions (number of nested FOR loops) and number of iterations for each FOR loop. The result should show me, something simmilar to counter, however each column of counter is limited to specific number. ArrayList<Integer> specs= new ArrayList<Integer>(); specs.add(5); //for(int i=0 to 5; i++) specs.add(7); specs.add(9); specs.add(2); specs.add(8); specs.add(9); public void recursion(ArrayList<Integer> specs){ //number of nested loops will be equal to: specs.size(); //each item in specs, specifies the For loop max count e.g: //First outside loop will be: for(int i=0; i< specs.get(0); i++) //Second loop inside will be: for(int i=0; i< specs.get(1); i++) //... } The the results will be similar to outputs of this manual, nested loop: int[] i; i = new int[7]; for( i[6]=0; i[6]<5; i[6]++){ for( i[5]=0; i[5]<7; i[5]++){ for(i[4] =0; i[4]<9; i[4]++){ for(i[3] =0; i[3]<2; i[3]++){ for(i[2] =0; i[2]<8; i[2]++){ for(i[1] =0; i[1]<9; i[1]++){ //... System.out.println(i[1]+" "+i[2]+" "+i[3]+" "+i[4]+" "+i[5]+" "+i[6]); } } } } } } I already, killed 3 days on this, and still no results, was searching it in internet, however the examples are too different. Therefore, posting the programming question in internet first time in my life. Thank you in advance, you are free to change the code efficiency, I just need the same results.

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  • Java HashSet is allowing dupes; problem with comparable?

    - by IVR Avenger
    Hi, all. I've got a class, "Accumulator", that implements the Comparable compareTo method, and I'm trying to put these objects into a HashSet. When I add() to the HashSet, I don't see any activity in my compareTo method in the debugger, regardless of where I set my breakpoints. Additionally, when I'm done with the add()s, I see several duplicates within the Set. What am I screwing up, here; why is it not Comparing, and therefore, allowing the dupes? Thanks, IVR Avenger

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  • How to convert binary, OCT, HEX to calculate in Java?

    - by user316751
    Write an application that inputs one number consisting of FIVE digits from the user, separates the number into its individual digits and prints the digits separated from one another by three spaces each. For example, if the user types in the number 12345, the program should print 1 2 3 4 5 The following screen dump of result is for your reference. Input a digit: 12345 Digits in 12345 = 1 2 3 4 5 How to convert binary, OCT, HEX to calculate the question?

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  • How to display a window on top with Java ?

    - by Frank
    I have the following code to display a message : JLabel A_Label=new JLabel("Updating channels ..."); A_Label.setFont(new Font("Times New Roman",0,16)); A_Label.setForeground(Color.BLUE); A_Label.setHorizontalAlignment(SwingConstants.CENTER); JOptionPane pane=new JOptionPane(A_Label); Object[] options=new String[]{"OK"}; pane.setOptions(options); JDialog dialog=pane.createDialog(new JFrame(),"Updating Channels"); dialog.setModal(false); dialog.setVisible(true); When the program runs, other windows displayed on top of it, how can I make it the top window ? I wonder if I can call "pane" or "dialog" to be on top ? Frank

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  • What's the best way to keep java app data stored redundantly in a file?

    - by Bijan
    If I have systems that are based on realtime data, how can I ensure that all the information that is current is redundantly stored in a file? So that when the program starts again, it uses this information to initialize itself back to where it was when it closed. I know of xstream and HSQLDB. but wasn't sure if this was the best option for data that needs to be a literal carbon copy.

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  • How to use Caret to tell which line it is in from JTextPane? (Java)

    - by Alex Cheng
    Hi all. Problem: I have CaretListener and DocumentListener listening on a JTextPane. I need an algorithm that is able to tell which line is the caret at in a JTextPane, here's an illustrative example: Result: 3rd line Result: 2nd line Result: 4th line and if the algorithm can tell which line the caret is in the JTextPane, it should be fairly easy to substring whatever that is in between the parentheses as the picture (caret is at character m of metadata): -- This is how I divide the entire text that I retrieved from the JTextPane into sentences: String[] lines = textPane.getText().split("\r?\n|\r", -1); The sentences in the textPane is separated with \n. Problem is, how can I manipulate the caret to let me know at which position and which line it is in? I know the dot of the caret says at which position it is, but I can't tell which line it is at. Assuming if I know which line the caret is, then I can just do lines[<line number>] and manipulate the string from there. In Short: How do I use CaretListener and/or DocumentListener to know which line the caret is currently at, and retrieve the line for further string manipulation? Please help. Thanks. Do let me know if further clarification is needed. Thanks for your time.

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  • Java - How can I edit the size and position of a button using Swing?

    - by mino
    I have the following code but I'd like to structure several buttons of certain sizes. I'm just wondering how to do this as I've Googled it and found several different methods but none seem to work. Any advice? import javax.swing.*; public class GUI { public static void main(String[] args) { JFrame window = new JFrame(); window.setSize(500, 500); window.setTitle("My Application"); JButton button = new JButton("click me"); window.add(button); window.setVisible(true); } }

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  • Ways to improve Java Generics and dont say get rid of wildcards and reification.

    - by mP
    Sometimes i like to write up template classes and use type parameters to make the abstract methods more type safe. Template<X> { abstract void doStuff( X ); // NOT public } While type safety is great etc, the problem remains that even though X is not visible to outside code, one must still include the type to avoid warnings. My solution in this case would be to make it possible to define a scope for type parameters (now they are always public). Would other original features besides the obvious would you like.

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  • The Elegant way to handle Cyclic Event in Java ??

    - by dex
    Hi fellows, i think this not a specific problem to me; everybody might have encountered this issue before. To properly illustrate it, here's a simple UI: As you can see, those two spinners are controlling a single variable -- "A". The only difference is that they control it using different views. If i change the top spinner, "A" will be changed and the bottom spinner's value will also be updated accordingly. However, updating the bottom spinner's call (such as setValue) will also trigger another event instructing the top spinner to update based on the bottom spinner's value. Thus creates a bad cycle which can eventually cause a StackOverFlow exception. My previously solution is kinda cumbersome: i placed a guarding boolean to indicate whether the 2nd updating call should be performed. Now i'd like to ask "how can i handle such situation elegantly?" thx

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  • What is the best free Java based bug tracker?

    - by Vladimir Dyuzhev
    For internal development team I'm looking for a bug tracker. Important requirements are: Free (must have) WAR/EAR-deployable (must have; support team prefers to have all apps deployed same way) Nice UI (nice to have) UPDATE Since I wrote this, Atlassian has introduced a $10 (ten, not ten thousand!) version of JIRA for 10 developers. I think it's as good as it can get -- best issue tracker out there with all enterprise features, for the cost of a few coffees. I have bought it for my current group out of my own pocket (to avoid bureaucracy).

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  • Can you cast an object to one that implements an interface? (JAVA)

    - by DDP
    Can you cast an object to one that implements an interface? Right now, I'm building a GUI, and I don't want to rewrite the Confirm/Cancel code (A confirmation pop-up) over and over again. So, what I'm trying to do is write a class that gets passed the class it's used in and tells the class whether or not the user pressed Confirm or Cancel. The class always implements a certain interface. Code: class ConfirmFrame extends JFrame implements ActionListener { JButton confirm = new JButton("Confirm"); JButton cancel = new JButton("Cancel"); Object o; public ConfirmFrame(Object o) { // Irrelevant code here add(confirm); add(cancel); this.o = (/*What goes here?*/)o; } public void actionPerformed( ActionEvent evt) { o.actionPerformed(evt); } } I realize that I'm probably over-complicating things, but now that I've run across this, I really want to know if you can cast an object to another object that implements a certain interface.

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  • What's a reasonable way to mutate a primitive variable from an anonymous Java class?

    - by Steve
    I would like to write the following code: boolean found = false; search(new SearchCallback() { @Override void onFound(Object o) { found = true; } }); Obviously this is not allowed, since found needs to be final. I can't make found a member field for thread-safety reasons. What is the best alternative? One workaround is to define final class MutableReference<T> { private T value; MutableReference(T value) { this.value = value; } T get() { return value; } void set(T value) { this.value = value; } } but this ends up taking a lot of space when formatted properly, and I'd rather not reinvent the wheel if at all possible. I could use a List<Boolean> with a single element (either mutating that element, or else emptying the list) or even a Boolean[1]. But everything seems to smell funny, since none of the options are being used as they were intended. What is a reasonable way to do this?

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  • java - how to split string in to multiple parts?

    - by Ewen
    I have a string that contains a value "firstword second third", and an ArrayList. I want to split the whole string in to by spaces and add the splitted strings in to the ArrayList. For example,"firstword second third" can be split to three separate strings and added three times in to the ArrayList. "1 2 3 4" can be splitted in to 4 strings and added 4 times in to the ArrayList. See the code below: public void separateAndAdd(String notseparated) { for(int i=0;i<canBeSepartedinto(notseparated);i++{ //what should i put here in order to split the string via spaces? thearray.add(separatedstring); } } public int canBeSeparatedinto(String string) //what do i put here to find out the amount of spaces inside the string? return .... } Please leave a comment if you dont get what I mean or I should fix some errors in this post. Thanks for your time!

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