[java] Forum Topics

Hello Friend I want to make SoftPhone in java as well as androied so please any help regarding it if you havae any website please link .

Hello, I'm trying to make a very basic + - calculator in java using constructors after watching thenewboston video tutorial I tried to experiment with it. My litle project is almost finished my only problem is that the boolean I use is being reset after I assign it. If someone …

Hey, I have a need to define a new type such as int,short etc. I have the class with all the base methods it must perform somewhat equivelant but different from the Integer class, Short class etc. However im not sure whether this is an interface i need to define. …

Hello! I am very new to Java and programming theory and desperately trying to improve my knowledge. This is the first program I've made without help and really would appreciate some feedback. I know there must be 1,000,000 better ways to do what I did. Notes: - Want to Move …

Im having a lot of trouble trying to figure out something that seems like it would be easy. For my final project I have to create a GUI application. I got it set up and working where when you click the button it will display some text depending on what …

Hi, this is part of an assignment question and probably something I should know. I have 2 classes. I have a method in one class that creates an instance of the other class and sets one of its attributes to a certain value. The class that has its attribute set …

hi i am a 3rd year Bsc student and i have to do a project on "Text To Speech Conversion and Speech Recognition", as part of my college project, and i want to implement it as a mobile app..so plz help me with some suggestion..

My application has a lot of buttons on it, and in order to create a skin for my application, I've been just creating a lot of images in my working directory and loading them all into my application as ImageIcons. I like working with ImageIcons, but not working with a …

**Hello i am a noob when it comes to java so sorry if its obvious but the code below is giving me a error when i try to compile it, the error is: Exception in thread "main" java.lang.Error: Unresolved compilation problem: at goodcalculator.main(goodcalculator.java:127). Can anyone help me? ** CODE: import …

I want to bring to my desktop java application real-time data from three market indexes of the world (Japan, Frankfurt, and Nyse). I only need these three quotes. Is it an easy task?

"The method overriding is an example of runtime polymorphism. You can have a method in subclass overrides the method in its super classes with the same name and signature. Java virtual machine determines the proper method to call at the runtime, not at the compile time." Why not at compile …

I would like to keep on checking a JTextField until the field equals ten digits. When the JTextField equals ten digits then an event will happen. I want to do this without a button. Here is what i tried to do: JTextField get = new JTextField(10); String a; public className(String …

Hi, I want to implament a simple tcp client and server. but I want my clien do I need to init the socket before every time I'm sending message to the server ? This is my client: class TCPClient { public static void main(String argv[]) throws Exception { String sentence …

class Dog { public void bark() { System.out.println("Dog bark"); } } class Hound extends Dog { public void bark() { System.out.println("Hound bark"); } public void sniff() { System.out.println("Hound sniff"); } } public class CastingMethodCall { public static void main(String r[]) { ((Dog)new Hound()).bark(); //((Dog)new Hound()).sniff(); } } On executing above, …

class Mixer { Mixer() {} Mixer(Mixer m) { m1 = m; } Mixer m1; public static void main(String args[]) { Mixer m2 = new Mixer(); Mixer m3 = new Mixer(m2); m3.go(); Mixer m4 = m3.m1; m4.go(); Mixer m5 = m2.m1; m5.go(); } void go() { System.out.println("hi"); } } The answer …

some people say that multiple inheritance in java is not needed because we have interfaces or that using singular inheritance can bring the same results as using a multiple inheritance. But that is not the case. Lets take a look at the example I call “The Workbench Example” say we …

hi i have created a j2me application which uses gps but wen it wants to use gps it prompts out a message to comfire its usage over location services. now i want to know how to make location servies to be used my default by the cellphone. i know its …

I have created a JFrame with two JPanes (mainPanel and secondPanel)in it. I am trying to update the first JPane (mainPanel) with a JPane that is returned by another class of the project. How can I do that? Thank you.

I have made 2 classes; Customer and Repair. I have a map<String, Customer>(customerDetails). Customer objects hold a map<String, Repair>(repairs). My GUI has 2 JTextAreas, notes and results. In notes ou type some notes and when you choose save the notes appear in results and a new Repair is created with …

I have created a JMenuItem and a JButton. How can I have the same result when I use either the JMenuItem or the JButton? Basically I want them to trigger the same method. Thank you.

I have created a JToolBar and I added 3 JButtons inside it. Is there any way I can increase the horizontal space between the buttons?(Now they seem like they're stacked together) Thank you.

I have created a form and I added a JFileChooser on it. When I start the form , the JFileChooser appears when the form loads. I gave used netbeans fileChooser tutorial.(http://netbeans.org/kb/docs/java/gui-filechooser.html) Any ideas? Thank you.

public class Thread8 implements Runnable { Demo d; public static void main(String r[]) { new Thread8().disp(); } void disp() { d = new Demo(); new Thread(new Thread8()).start(); new Thread(new Thread8()).start(); } public void run() { d.fun(Thread.currentThread().getId()); } } class Demo { static long f=0; synchronized void fun(long id) { for(int …

Hi, im trying to query an oracle db set up of table is all done and filling it is fine but when i try to send a query to the db using a resultset to store the outcome im getting the error "cannot convert int to ResultSet" ive looked at …

Hi, How do you disable the minimize button in a JFrame. I only want to disable the minimize button, not the close and maximize button. Please help me with this one. Thanks.

hey, so I know if I use the drawLine() method, then I could change the line stroke/thickness with setStroke, but how do I change the thickness of a Line2D?

This is my code: //VariableArguments3.java public class VariableArguments3 { static void test(String s,int ...v) { System.out.println("length:"+v.length+" String:" +s); for(int x:v) System.out.println("x="+x); } static void test(String s,double ...d) { System.out.println("length:"+d.length+" String:" +s); for(double x:d) System.out.println("x="+x); } } and //VariableArguments3.java public class VariableArguments3Test { public static void main(String args[]) { VariableArguments3.test("harshal",33,43,34,23,24); VariableArguments3.test("hosha",43,442); …

This is my code: //VariableArguments1.java public class VariableArguments1 { static void test(int ...v) { System.out.println("length:"+v.length); for(int x:v) { System.out.println("x="+x); } } } and //VariableArguments1Test.java public class VariableArguments1Test { public static void main(String args[]) { test(33,43,34,23,24); test(43,442); test(); } } Following are the errors i am getting: VariableArguments1Test.java:5: cannot find symbol …

Hi,I'm writing a Java/Android application which consumes web services(these web services are written in .Net) from a certain URL.My problem is that some web services return to my application objects which are defined in .NET.Is there anyway my application can manipulate those objects?

I installed Apache Tomcat 7.0.28 in my JBuilder6. I use JDK 1.6.0_32 (jre6). I can get http://localhost:8080/ page. However, when I tried to run my JSP file, I encountered following error: org.apache.catalina.startup.Bootstrap start -config "C:\Documents and Settings\user\jbproject\whoznextdoor\conf\server8080.xml" -nonaming Jun 23, 2012 8:22:47 AM org.apache.catalina.startup.Bootstrap main WARNING: Bootstrap: command "-nonaming" does …