32,199 Topics
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| | can anyone see my error? error output error: ';' expected System.out.println((GoldFish)owner.pets[ 9 ]).getAction("*Rat eats alot*" )); ^ owner.pets[ 9 ] = new GoldFish(); Pet BlackMoor = owner.pets[ 9 ]; System.out.println((GoldFish)owner.pets[ 9 ]).getAction("*Rat eats alot*" )); |
| | Hi All can you pleased help me how to resolve applet load fail in IT link applet loading fine, but when i used same code and made a local setup while runnning applet is not loading please see the stack trace and com.scand.jtree classes are exists under applet folder under … |
| | I need to develop a program in Java which will launch an integrated or USB webcam and capture a video recording for a specified time....i looked through the net, but I couldn't get the code to work...I have the JMF files....can anyone please tell me how its done, or if … |
| | I am trying to use Java to detect signals from the serial port sent from an IR circuit. When the IR circuit detects an obstacle, it gives an output of 0 volts and otherwise the output is 5 volts. Can I read these voltage differences directly on the PC using … |
| | Hi, Im been working with a project now, and have got stuck. Cant see what im doing wrong. Im supposed to make a Digital Thermometer. Right now im stuck on passing values from one class to another, been trying to use get methods.It seems like the value I get is … |
| | I know this seems to be a very basic questions but still want to clear my basic knowledge so i am asking this question What is String Pool in java? what is difference between String var="DANIWEB; and String var =new String("DANIWEB"); |
| | how can i use the matlab(matlab function) into java |
| | `Inline Code Example Here` class MainMenu extends JPanel { public MainMenu() { this.setLayout(null); JButton newGame = new JButton("New Game"); JButton loadGame = new JButton("Load Game"); JButton scoreGame = new JButton("High Score"); JButton exitGame = new JButton("Exit Game"); this.add(newGame); newGame.setBackground(Color.white); newGame.setPreferredSize(new Dimension(180, 50)); newGame.setFont(new Font("Fixedsys", 1, 25)); this.add(loadGame); loadGame.setBackground(Color.white); loadGame.setPreferredSize(new Dimension(180, …  |
| | I am making a java gui keyboard as practice The keyboard itself works well and is made out of JButtons It changes colors when a certain key is pressed and then releseased I have two questions: Is there a simple way to listen for tab being pressed? Is there a … |
| | Hello. I'm new to Java. I created 4 CHOICE that has 9 numbers. It should convert the selected item into words in the text area. I don't have any idea how to do it. Please Help. Here's my code. import java.awt.*; import java.awt.event.*; import javax.swing.*; import java.util.*; public class Final1 … |
| | Hi, Basically im looking to create a simple application that takes in an instruction from the console. The instruction includes the width and length of a grid (x,y), the starting location of a car (x,y on grid), and the instruction to move about on the grid. Essentially an instruction shall … |
| | How do you wrap code in tags. This OP had a problem doing it: See http://www.daniweb.com/software-development/java/threads/418944/choice-and-text-area-convert-number-to-word `String var = null; forIint i etc // end`  |
| | I have a question. How can I run a process while a timer is running in the program. Here's a sample layout of what I mean. Or is it possible to have this kind of layout?  I have already the timer method. |
| | My only issue here is i am not able to invoke line 41 owner.pets[ 3 ].getAction();? Any ideas why? `Inline Code Example Here` abstract class Pet1 { abstract void perform(); } class Dog extends Pet { void perform() { System.out.println("*The dog rolls over*"); } } class GoldFish extends Pet{ void …  |
| | The following is my RDF file structure. <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" > <rdf:Description rdf:about="http://www.wordpress.com/blogs/ckj"> <rdf:subject>Data structures</rdf:subject> <rdf:object>vijayalakshmi</rdf:object> <rdf:value>kjhjk</rdf:value> </rdf:Description> </rdf:RDF> I want to write a piece of java code that can * read the value of <rdf:subject> <rdf:object> into a model inside a java program. How should I do this?? I am … |
| | I am cresting a digital clock and I am having troubles updating the interface please can someone help me with this. I have the code below: ********/* * To change this template, choose Tools | Templates * and open the template in the editor. */ package Interface; /** * * … |
| | Hi My issue is i cant get the arrys correct,with abstract class.Can some one highlight to me the error in class Example1.I want to create 2 extra pets (iguana & hamster) but i am getting it wrong. below are the errors from my complier 23.java:37: error: constructor GoldFish in class … |
| | hi, i read through a few website ,gone through a few examplebut i am still getting 01 error in my code? Error message: goldFish.java:11: error: cannot find symbol void perform(){System.out.printIn(this.action); ^ symbol: method printIn(String) location: variable out of type PrintStream 1 error abstract class Pet { abstract void perform(); } … |
| | I made a custom JTextField that only accepts numbers into the textfield. I used insertString to do this. Tt works pretty well except it allows oddly only the letter e. It accept e only after a number is inputted first. And once e has been entered the textfield does not … |
| | Hello, I am writing a simple program for my Java class and I keep getting this annoying error that after reading the code over and over again, I just can't see where the error is originating from. Anything obvious sticking out? Here is the error: Exception in thread "main" java.util.InputMismatchException … |
 | hi all , I develpoed java application i java swingss, I need tocreate two versions linced version and trail version, Trail version should experied in 20 days,once user gives the serieal key the application shold work , where shold I store registration key, How could I protect my application could … |
| | Hi all, I have a slight problem when checking if a "Token" is in my StringTokenizer string. My code: import javax.swing.*; import java.awt.*; import java.awt.event.*; import java.lang.String.*; import java.util.*; public class TextAnalyser { public static void main( String args ) { StringTokenizer stringTokenizer = new StringTokenizer("You are tokenizing string"); System.out.println("The … |
 | Okay, I am going to go through ALL my steps thus far just so that this process can be sped up hopefully. I have done this before, but it was awhile back and I forgot how, but I know it is possible. 1. I made a Neatbeans created Java Application. … |
| | hello everyone, I am developing an application for my project... My application works correctly when I run it on applet viewer...But when i try to run it with the help of html page ..the code does not run and gives an erron java.security.accessdenied exception.... Actually i have loaded an image … |
 | As I mentioned in an earlier post of mine that I have my computer exam on th 26th March 2012.. So I was just wondering if anyone could provide me with some programming questions for my school level which I could practice on my own. If anyone is posting me …  |
| | **Hey, Hi all! I'm a bachelor student, new to Java. Following code is giving error in PrintDetails() What parameters should I define in it?? Kindly check and tag out my mistakes in the following code.. Thanks ^_^** class student { String a;String b;char c;double d; student(String name,String rollno,char gender,double gpa) … |
| | Could anyone tell where is the error in the program? There is a compile-time error... When I hit compile it shows error in the 40th line saying that 'r' might not have been initialised.. I can't get that.. Pease could anybody help?? import java.util.Scanner; public class Customer_Account { public static … |
| | I need to take arguments and change the extensio of the file for writting but I get java.lang.ArrayIndexOutOfBoundsException: 1 Why? Is there any better way? // change file name for saving the output file int dot = inputFile.lastIndexOf('.'); // check for the dot String baseName = (dot == -1) ? … |
| | Open the project space in greenfoot and study the codes of the classes Space and Asteroid. 2. Modify the constructor so that the space world paints 300 stars. To paint a star you write the following code: GreenfootImage star = getBackground(); star.setColor(Color.WHITE); star.drawOval(50,50,2,2); this will draw a small white star … |
| | Hi. I have problem adding text box after each label ID Code, Weight, Rate, Price Charge, it does not show when i run the code. Also, how do i add the $ sign when display the price charge. the ouput should be like this: Fee Calculator ID Code: [Text Box] … |
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