Program That Shows A Square Frame Filled With 100 Buttons Label

Apr 13, 2014

Write a program that shows a square frame filled with 100 buttons labeled 1 to 100. Nothing needs to happen when you press any of the buttons. I keep getting errors i am a beginner.

import java.awt.Frame;
import javax.swing.JButton;
import javax.swing.JPanel;
class TestFrame extends Frame {

[Code] ...

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Nothing Except Frame And Label Shows Up

Apr 3, 2014

Java Code:

import java.awt.*;
import java.awt.event.*;
public class TestFrame extends Frame implements ActionListener {
static int i;
Frame fr;
Button b1,b2;
Image img[]=new Image[3];

[Code] .....

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Oct 17, 2014

Do I want to make something like this:

*****
*.....*
*.....*
*.....*
*****

I am stuck, I have made a code that creates this and don't know how to complete it.

*****
* *
* *
* *
*****

Code:

class Main {
public static void main( String args[] ) {
System.out.print("#Enter number of stars :");
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[Code] ....

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Nov 18, 2014

I need a code to get a text from a textField to a label but the label is on a different frame, i will give u an example of what i have so far. so this is the main:

package albaestate;
public class AlbaEstate {
public static void main(String[] args) {
Frame1 first = new Frame1();
first.setVisible(true);
}

/*[B]now i have the first frame where i input the information[/B]*/
 
package albaestate;
public class Frame1 extends javax.swing.JFrame { 
public Frame1() {
initComponents();

[Code] ....

What i need is to input the code so that in jLabel5 i get the text from jTextField1 in Frame1; in jLabel6 i need the text from jTextField2 also in Frame1; and in jLabel7 i want to display the calculation of what the jbutton1 in Frame1 is calculating.

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Simple Frame Button And Text Label

Jun 2, 2014

why this code doesnt work? Its suppose to be a simple frame with a button that puts text to the frame when u click it. The problem is actionPerformed method, when it tries to call the stuff inside the constructor it all goes wrong. I switched the method body with a system.out.println() and it all works fine.

import java.java.awt.Label;
import java.awt.Button
import java.awt.BorderLayout;
import java.event.*;
public class TheClass implements ActionListener {
public TheConstructor() {

[code]....

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Aug 6, 2014

I have a guessing game that im working on but it wont add my buttons to the frame, why?

// GuessGame.java
// Guess the number
import javax.swing.JFrame;
public class GuessGame extends JFrame {
public static void main(String args[]) {
GuessGame panel = new GuessGame();
panel.setSize(400,350);

[Code] ...

The window pull up and even in the design view it shows everything on there but when i run its just a blank window.

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Program Shows No Output In Eclipse In NetBeans

Oct 1, 2014

It has no errors in it, but when it runs, it just doesn't show any output at all. Here's my code.

Fuel Class:

public class FuelGauge {
// Setting the gallons and the total amount of gallons
private int gallons;
final static int TotalGallons=15;

public FuelGauge(){
gallons=0;
}
// Initiate the number of gallons
public FuelGauge(int gallons){

[Code] .....

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Program Shows Error While Using Super Keyword

Jan 3, 2015

//constructor
class Base
{
Base(int a) {
System.out.println("in base"+a);;
}
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class Cons extends Base

[Code] .....

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Create A Program That Shows Three Test Grades And Average

Jan 28, 2015

package Program1;
import java.util.Scanner;
public class Source1 {

[Code].....

using netbeans to debug the program but i'm not sure what I did wrong as it doesnt go past test 1

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JSP :: Eclipse Project Window Shows Error But Code Editor Shows No Error

May 22, 2014

For my jsp file, the code editor shows no error, but the projects window shows an error. I built my project again, cleaned the project, restart eclipse twice and summoned cthulhu. But my project still shows an error. How do I find the cause.

Eclipse project -

JSP file -

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%@ taglib prefix="mine" uri="DiceFunctions"%>

[Code] ....

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When Remove Increment Operator Program Shows Invalid Statement

Feb 19, 2015

class Brain56
{
public static int[] get()
{
return null;
}
public static void main(String...a)
{
int k=1;
get()[k]++;
}
}

when i remove the increment operator(get()[k]) program shows invalid statement may i know the reason behind it?

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Aug 31, 2014

I'm trying to create a cursor for a game that moves square by square. While it will move to the next square, though, it leaves the image of the previous cursor on the last square it was on.

As a visual explanation, this is what the program looks like on launch:

This is what it's suppose to look like after you press the right arrow key once (made by forcibly changing launch coordinates):

And this is what it actually looks like after you press the right arrow key once:

Here is the code for the program:

package cursortest;
import javax.swing.*;
import java.awt.*;
import javax.imageio.*;
import java.io.*;
import java.awt.event.*;
public class CursorTest extends JPanel implements KeyListener{

[Code] ......

I'm fully aware that I could just use g.clearRect on the area and remove it for sure, but I know for a fact I shouldn't have to as I have another program I made a long time ago that tried to do something similar without needing to resort to that.

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Putting ImageIcon Into Label (Original Size) By Clicking On Label (Thumbnail Created Before)

Nov 6, 2014

I'm doing a software Java GUI - JFrame form like this:

1. The user wants to click on a button that opens a bunch of images that will be displayed as thumbnail in the bottom of the JFrame .
2. Then the user wants to select/click one of the thumbnail and make appear the corresponding image in it's original size on above(center) of the JFrame.

For doing this I used 3 JPanel.

One contains a JButton that opens the jfilechoser dialog window,
the second "panelPreview" is for putting the thumbnails created,
and the third "panelGrande" is for the image in it's original size.

The firs part "1." is ok.

But in the second part : I got one error when I want to put the ImageIcon in to the JLabel with the further intent of displaying it.

lblBig(imgIcoVett[i]);

In this project I'm dealing with arrays of ImageIcons and JLabels, so it's a bit advanced level for me, so I'm not sure that I wrote right the part of the MouseListener too.

The error displayed by netbeans says "cannot find symbol symbol: method lbl (ImageIcon) local variables referenced from an inner class must be final or effectively final"

Here I attach the project I did with netbeans"AAAD Unlayout 2.zip", but if you just need the highlight of the code, here it is too:
 
private javax.swing.JButton btnOpenfile;
private javax.swing.JFileChooser jFileChooser1;
private javax.swing.JPanel jPanel1;
private javax.swing.JLabel lblBig;
private javax.swing.JPanel panelGrande;
private javax.swing.JPanel panelPreview;

[Code] ....

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Nov 21, 2014

import java.util.Scanner;
public class justin10a

public static void main(String [] args)
{
int n;
n = getSize();
 
[Code] .....

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Feb 20, 2014

How would I compare the square of the square root of any number. The difference in these values is due to the rounding error in Java.

Example: Enter number 2

The answer I should get is: 2.000000000000004
Round off error: -4.440892

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Unable To Set Text To A Label Multiple Times In Same Program

Aug 5, 2014

I am developing a java swing application. In which i want to set a different text to a label in same program ( in single JFrame). I dont want to use another JFrame instead i want to use setText method of java and set different text to a label at different intervals of time according to my need.

I am using java 1.7 sdk and pupy linux as OS. Below i am giving source code.

What i am doing is in constructor of class i am setting an image to JFrame and setting text "Welcom...". And when user clicks on this JFrame a method is called which will clear the text "Welcome.." and sets new text to another label "Enter...." and from there another method is called and it clears label "Enter..." and sets a text "Plzz wait..". and yet there are more methods, i havnt provided here.

But what is happening is it shows welcome text and then directly Plzz wait..

Its not showing text Enter... because control is finished after last method gets executed.

My concern is i want to show all the setText (my messages) in a sequence. Without using another JFrame. There is no any user input other than user will click on first welcome page.

public class BackgroundFrame extends javax.swing.JFrame {

JLabel setTitle1;
JLabel setTitle2;
JLabel setTitle3;
JLabel setTitle4;

[Code] ....

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Feb 22, 2015

I'm writing a graphical program with several Label objects. One of them is supposed to constantly change color. I tried to do it with while loop like this:

while (true) {label1.setColor(Color.blue); pause (80); label1.setColor(Color.red); pause (80);}

However, the rest of the code (after the loop) is never reached because the loop never ends. Is it possible to use infinite loop like this? And, is there any other way to handle permanent processes that are supposed to run as long as the program is running (like, in this case, blinking Label)?

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Apr 25, 2014

I am working on a magic square program. My program compiles. However, when I enter the square dimension it does not select the correct file. The error says "java.io.FileNotFoundException." It looks like it inserts 0 instead of the entered dimension.

import java.util.*;
import java.io.*;
public class Trial2
{
public static int size, row, col;
public static void main(String[]args)throws java.io.IOException

[Code] ....

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Sep 22, 2014

Write a program that prompts the user to enter an integer m and find the smallest integer n such that m * n is a perfect square. (Hint: Store all smallest factors of m into an array list. n is the product of the factors that appear an odd number of times in the array list. For example, consider m = 90, store the factors 2, 3, 3, 5 in an array list. 2 and 5 appear an odd number of time in the array list. So, n is 10.)

so far my program is just like this.

import java.lang.Math;
import java.util.Scanner;
public class PerfectSquare {
public static void main(String[] args) {
Scanner m = new Scanner(System.in);
int Fint;

[Code] .....

how do i make the program find the smallest integer n?

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Feb 10, 2014

I'm trying to make a program with two buttons... when you click the first a label shows a red square when you click the second it shows a green square... right now i have the imageicons as a comment because when they weren't a comment and i ran the program i saw nothing... the same thing happens when i add label2 to panel3.

Java Code:

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class GUI3{
public static void main(String[] args){
//frame
JFrame frame = new JFrame("Test");

[code]...

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Dec 6, 2014

I just started to learn Java Swing and I was trying to make a program that puts 2 images into the Frame window. The code itself doesn't have any errors but when I compile it gives a nullpointerexception, I checked the line with the error and it had to do with my image file but I can confirm the name is correct and I tried both using the path and the name of the image in the package but neither is working.

Error message:
Exception in thread "main" java.lang.NullPointerException
at javax.swing.ImageIcon.<init>(Unknown Source)
at ImageTutorial.<init>(ImageTutorial.java:25)
at ImageTutorial.main(ImageTutorial.java:33)

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The problem is this.

The way it will work is the list will be in a specific order. Whoever is at the top of the list will be asked if they want to do overtime. Then they will be moved to the back of the queue. If they do the work or not doesnt matter.How would i go about planning a system like this? Specifically creating a dynamic list that people can be moved up and down and stored persistently. URL...

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I have a Char stack: ArrayStack<Character> stek=new ArrayStack<>();

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char tmp2 = (char) tmp;
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When the code prints I get a random set of numbers which occur in the Fibonacci sequence preceding it. However, the actual length of this Random array also changes each time, and never more than the limit of 15 specified in the 'for' loop. What I want to try and do is print the Random array with a specific length each time. I've tried changing the conditional statement of the 'for' loop in different ways to set the Random array's length, but had no luck.

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import java.util.*;
import java.io.*;
public class occurance {
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[code]....

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