dreadnightmare dreadnightmare - 5 months ago 29
Java Question

Radio buttons don't show

I am trying to make survey in java. I have 20 questions and 5 possible choices. I was thinking of making 20 labels and 100 radio buttons grouped by 5.

I managed to manually add labels using the Net beans GUI, but I wanted to generate buttons, but they don't show. Here is my code:

public class Prikaz extends javax.swing.JFrame {

/**
* Creates new form Prikaz
*/
public Prikaz() {
initComponents();
javax.swing.JRadioButton [][] buttons = new javax.swing.JRadioButton [20][5];
ButtonGroup [] bg = new ButtonGroup[20];


for (int i = 0; i < 20; ++i) {
bg[i]= new ButtonGroup();
for (int j = 0; j < 5; ++j) {
buttons[i][j] = new javax.swing.JRadioButton();
if(j==0)buttons[i][j].setSelected(true);
buttons[i][j].setLocation(1014+(j*24) , 44+(i*31));
buttons[i][j].setToolTipText(((Integer)(j+1)).toString());
buttons[i][j].setVisible(true);
buttons[i][j].setEnabled(true);
bg[i].add(buttons[i][j]);
}
}

}

// Variables declaration - do not modify
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel10;
private javax.swing.JLabel jLabel11;
private javax.swing.JLabel jLabel12;
private javax.swing.JLabel jLabel13;
private javax.swing.JLabel jLabel14;
private javax.swing.JLabel jLabel15;
private javax.swing.JLabel jLabel16;
private javax.swing.JLabel jLabel17;
private javax.swing.JLabel jLabel18;
private javax.swing.JLabel jLabel19;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel20;
private javax.swing.JLabel jLabel21;
private javax.swing.JLabel jLabel3;
private javax.swing.JLabel jLabel4;
private javax.swing.JLabel jLabel5;
private javax.swing.JLabel jLabel6;
private javax.swing.JLabel jLabel7;
private javax.swing.JLabel jLabel8;
private javax.swing.JLabel jLabel9;
// End of variables declaration
}

Answer

You need to add the buttons to the parent component in addition to the ButtonGroup.

For example, to add the button to jlabel1, add this after creating the button:

jlabel1.add(buttons[i][j]);