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POTrouble with CheckBox matrix, loops won't work
 

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  1. POTrouble with CheckBox matrix, loops won't work
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    <p>I am writing a program which will have multiple windows that will pass a value between them. Currently I am testing one part of my program that is made out of 1-99 checkboxes. But when I want to check their states by clicking on a button it just doesn't work. Here's where the problem is:</p> <pre><code>public void actionPerformed(ActionEvent event) { if(event.getSource() == okay) { for(int i=0;i&lt;box.length; i++){ for(int j=0;j&lt;box.length; j++){ if((i==0)&amp;&amp;(j==0)) continue; if(box[i][j].getState()) asdf.matra[i][j]=true; System.out.println(box[i][j].getLabel() + " is " + asdf.matra[i][j]); } } } } </code></pre> <p>here's the main class:</p> <pre><code> public class asdf { public static boolean matra[][] = new boolean[10][10]; public static void main(String arg[]) { for(int ii=0;ii&lt;matra.length; ii++){ for(int jj=0;jj&lt;matra.length; jj++){ matra[ii][jj]=false; } } new JFrameDemo(); } } </code></pre> <p>and the other class:</p> <pre><code>import java.awt.*; import java.awt.event.WindowEvent; import java.awt.event.ActionListener; import java.awt.event.ActionEvent; import java.awt.event.ItemListener; import java.awt.event.ItemEvent; public class JFrameDemo extends Frame implements ActionListener, ItemListener { Checkbox box[][] = new Checkbox[10][10]; Button okay; JFrameDemo() { enableEvents(AWTEvent.WINDOW_EVENT_MASK); add(makePanel()); pack(); show(); } private Panel makePanel() { GridBagConstraints con = new GridBagConstraints(); Panel panel = new Panel(); GridBagLayout gridbag = new GridBagLayout(); panel.setLayout(gridbag); for(int i=0;i&lt;box.length; i++){ for(int j=0;j&lt;box.length; j++){ if((i==0)&amp;&amp;(j==0)) continue; box[i][j] = new Checkbox(i+j*10+""); con.gridx = i; con.gridy = j; panel.add(box[i][j],con); } } okay = new Button("Unesi"); con.gridx = 10; con.gridy = 10; panel.add(okay,con); return(panel); } public void actionPerformed(ActionEvent event) { if(event.getSource() == okay) { for(int i=0;i&lt;box.length; i++){ for(int j=0;j&lt;box.length; j++){ if((i==0)&amp;&amp;(j==0)) continue; if(box[i][j].getState()) asdf.matra[i][j]=true; System.out.println(box[i][j].getLabel() + " is " + asdf.matra[i][j]); } } } } public void itemStateChanged(ItemEvent event) { } public void processWindowEvent(WindowEvent event) { if(event.getID() == WindowEvent.WINDOW_CLOSING) System.exit(0); } } </code></pre> <p>The program is running without any errors, but the console isn't giving any results. It is supposed to pass value to the global variable also. I think there's an issues with nested fors. </p>
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    1. PTQuestion
    1. This table or related slice is empty.
    1. USMihajel Petrovic
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      1. POTrouble with CheckBox matrix, loops won't work
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      1. VTUpMod
    1. COAnd which part of your code is having problem? Of course you don't want us to skim through your whole code right?
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      1. POTrouble with CheckBox matrix, loops won't work
      1. USRohit Jain
    2. COIt's there actually, it's the first code segment I've put. Fors seem not to work, I've tried with a Checkbox array and it does work, I initiate the checkbox matrix, but when I am supposed to click on okay button and check their states, go trough them all with fors it just doesn't.
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      1. POTrouble with CheckBox matrix, loops won't work
      1. USMihajel Petrovic
 

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