Search Results

Search found 32961 results on 1319 pages for 'java'.

facebook twitter digg google delicious technorati stumbleupon myspace wordpress linkedin gmail igoogle windows live tumblr viadeo yahoo buzz yahoo mail yahoo bookmarks favorites email print

Page 952/1319 | < Previous Page | 948 949 950 951 952 953 954 955 956 957 958 959  | Next Page >

  • Are Interfaces "Object"?

    - by PrashantGupta
    package inheritance; class A{ public String display(){ return "This is A!"; } } interface Workable{ public String work(); } class B extends A implements Workable{ public String work(){ return "B is working!"; } } public class TestInterfaceObject{ public static void main(String... args){ B obj=new B(); Workable w=obj; //System.out.println(w.work()); //invoking work method on Workable type reference System.out.println(w.display()); //invoking display method on Workable type reference //System.out.println(w.hashCode()); // invoking Object's hashCode method on Workable type reference } } As we know that methods which can be invoked depend upon the type of the reference variable on which we are going to invoke. Here, in the code, work() method was invoked on "w" reference (which is Workable type) so method invoking will compile successfully. Then, display() method is invoked on "w" which yields a compilation error which says display method was not found, quite obvious as Workable doesn't know about it. Then we try to invoke the Object class's method i.e. hashCode() which yields a successful compilation and execution. How is it possible? Any logical explanation?

    Read the article

  • Quickest and most efficient method to search top 3 numbers?

    - by Donal Rafferty
    I currently have an array of around 8 - 10 numbers that changes on a periodic basis. So around every 5 - 10 seconds the numbers get updated. I need to get the top 3 numbers in the array every 10 seconds. This is all done on a mobile device. At the minute I iterate through the array 3 times and each time I take out the three highest numbers and place them in three previously declared variables. My question is what should I look to do to increase speed and efficiency in this instance?

    Read the article

  • What are the scenarios in which case a new class will be loaded?

    - by GK
    That is when you have any jar file attached to you your class path. then as far as i know any class from the jar is loaded for the first time when, when you create any object of that type. or If you are accessing any static member or method of that class. or when you load that by using Class.forName() method. So are there any other ways of loading a class for the first time?

    Read the article

  • add objects with different name through for loop

    - by Gandalf StormCrow
    What is the best way to do the following: List<MyObject> list = new LinkedList<MyObject>(); for(int i=0; i<30;i++) { MyObject o1 = new MyObject(); list.add(o1); } But the things is I don't wanna create objects with same name, I wanna create them with different name like o1,o2,o3,o4,o5,o6,o7,o8,o9,o10 and I wanna add each to the list. What is the best way to do this ?

    Read the article

  • can I get .class from generic type argument?

    - by Mike S
    I have the following class: public abstract class MyClass<T extends Object> { protected T createNewFromData(Reader reader){ GSON.fromJSON(reader,T.class); // T.class isn't allowed :( } } How do I pass a Class<T instance into there? Is there some wierd and wacky work around? Is there a way to get a Class<T reference other than from a pre-instantiated Object of type T? It won't let me do this either: T t = new T(); Class<T> klass = t.class; ANSWER BELOW Thanks to the accepted answer, here is the solution: Type type = new TypeToken<T>(){}.getType(); return gson.fromJson(reader, type);

    Read the article

  • Can I and should I use Eclipselink for non OR database interactions?

    - by Tim
    We are using Eclipselink for ORM, but we have a need for some more lightweight database interactions that are more equivalent to JDBC. My question is whether Eclipselink supports such an idiom and whether there are any advantages of it to straight JDBC. I can see one advantage being consistency and being able to use the existing connection handling. Others? Specifically, what I'm looking for is something equivalent to Hibernate's Native SQL Query.

    Read the article

  • Add a Component to two different JTabbedPanes

    - by haldean
    I have a LinkedList of Components, each of which I would like to add into two different JTabbedPanes. For some reason, Swing is only letting me put each component into one or the other. The code I'm using is the following: /* The two tab panes */ JTabbedPane leftTabs = new JTabbedPane(); JTabbedPane rightTabs = new JTabbedPane(); for (int i=0; i<tabPanes.size(); i++) { rightTabs.add(tabPanes.get(i)); leftTabs.add(tabPanes.get(i)); } Whichever add call I put last is the one that works; if I add to leftTabs last, then rightTabs ends up empty, and vice-versa. Any ideas on how to get this working? Thanks!

    Read the article

  • How do I compare a string in an array to a string?

    - by user1641312
    EDIT: IT'S FIXED, THANKS FOR THE HELP! So basically I have an array of strings, a question and an answer public static String[][] triviaData = { {"Question2", "Answer1"}, {"Question2", "Answer2"}, {"Question3", "Answer3"}, }; And I am trying to make a method that validates an entered input, lets call the entered input enteredAnswer. enteredAnswer is stored as a String. I am trying to validate that the enteredAnswer is the same as the second index of the array. if (enteredAnswer.equalsIgnoreCase(triviaData[Config.CurrentQuestion][1])) { This is the code I tried, but I get the error "Cannot invoke equalsIgnoreCase(String) on the array type String[]" I am a beginner programmer so if you could help me out it would be highly appreciated. Thanks. enteredAnswer is stored as public String[] enteredAnswer;

    Read the article

  • Display Outlook rooms occupancy in a web page

    - by pfonseca
    Hi everybody, I'm decommissioning a meeting room scheduling [web] tool in favor of the same Outlook's functionality. I'd like, however, to publish (read-only) a "Group Schedule" view in a web page. To make the idea more clear: On Outlook's Calendar view, select Actions / View Group Schedules and then create a new group for say, Conference Rooms. This new view will give a global view of Conference Rooms occupancy. I need a way to publish this room's occupancy. Any idea or suggestion? Thanks in advance

    Read the article

  • Parsing in groovy between two tags ?

    - by fabien-barbier
    I would like to parse this Gstring with groovy : Format type : CodeClass, Name, Accession, Count. def txt = """ <Lane_Attributes> ID,1 FovCount,600 FovCounted,598 ... </Lane_Attributes> """ And get a map like : Map = [ID:1, FovCount:600, FovCounted:598] How can I : - extract text between tag and ?, - and convert to a map ?

    Read the article

  • change all the label icon in a panel

    - by Josh
    I have a panel with several JLabel, I would like to change all their Icon, String path = System.getProperty("user.dir"); for (int x=0;x< 21;x++) { javax.swing.JLabel lab = boardPanel.getComponent(x).; lab.setIcon(new ImageIcon(path + "\\image\\blank.jpg")); } it gives me an error of incompatible type, all inside the boardPanel are JLabel, im using netbeans 6.8.

    Read the article

  • gmail app 504 server timeout

    - by Hui
    this is the part of code I use for getting info from gmail, it's working alright on my localhost, but somehow when i deploy it online, I got 504 gateway timeout error. Did I missed something in my code? can someone give some advices , thanks a lot public class GetGmail { static String last = null; public static ArrayList run(String username, String password, String lastloggin)throws Exception { ArrayList result = null; System.out.println("Getting Gmail......"); last = lastloggin; Properties props = System.getProperties(); props.setProperty("mail.store.protocol", "imaps"); try { Session session = Session.getDefaultInstance(props, null); Store store = session.getStore("imaps"); store.connect("imap.googlemail.com", username, password); result = readMessage(store); store.close(); } catch (NoSuchProviderException e) { e.printStackTrace(); return null; } catch (MessagingException e) { e.printStackTrace(); return null; } return result; } }

    Read the article

facebook twitter digg google delicious technorati stumbleupon myspace wordpress linkedin gmail igoogle windows live tumblr viadeo yahoo buzz yahoo mail yahoo bookmarks favorites email print

< Previous Page | 948 949 950 951 952 953 954 955 956 957 958 959  | Next Page >