CODEWITHSUNDEEP
javaarraysswing
MastaOpec
MastaOpec

Reputation: 39

problems adding arrays of jbutton and jlabel into arrays of jpanel unto a frame

i want to add 10 jlabel and 10 jbutton unto each jpanel. Now there are 10 jpanels which i want to add to a frame, so the jframe should show 100 jlabel, 100 jbutton with 10 jpanels. My problem is that the frame only shows 10 jlabel and 10 jbutton. i dunno where am wrong. here is my code

public class MultiPanel extends JFrame {

private JPanel[] panel;
private JLabel[] label;
private JButton[] button;

public MultiPanel() {
    panel = new JPanel[10];
    label = new JLabel[10];
    button = new JButton[10];

    for (int i = 0; i < label.length; i++) {
        label[i] = new JLabel(String.valueOf(i + 1));
        button[i] = new JButton("B");
        label[i].setSize(50, 50);
        panel[i] = new JPanel();
        panel[i].setLayout(new FlowLayout(FlowLayout.CENTER));
        panel[i].add(label[i]);
        panel[i].add(button[i]);
        add(panel[i]);
    }
    setLayout(new GridLayout(1, 10));
    setSize(720, 560);
    setVisible(true);
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}

public static void main(String[] args) {
    MultiPanel m_pnl = new MultiPanel();
}
}

Upvotes: 0

Views: 678

Answers (1)

Josh Engelsma
Josh Engelsma

Reputation: 2646

public class MultiPanel extends JFrame {

public MultiPanel() {
int increment = 0;
while(increment < 10){
    JPanel toAdd = new JPanel();
    for (int i = 0; i < 10; i++) {
        JLabel l = new JLabel(String.valueOf(i + 1));
        JButton b = new JButton("B");
        l.setSize(50, 50);
        toAdd.setLayout(new FlowLayout(FlowLayout.CENTER));
        toAdd.add(l);
        toAdd.add(b);
    }
    add(toAdd);
    increment++;
}
setLayout(new GridLayout(1, 10));
setSize(720, 560);
setVisible(true);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}

public static void main(String[] args) {
    MultiPanel m_pnl = new MultiPanel();
}
}

Your logic was faulty... Try this. You have an outer whileloop that will create 10 JPanels like you want. The inner for loop adds 10 JLabels and JButtons to each JPanellike you want. Then you just add all ten JPanels to the main JPanel which is slapped on the JFrame. I have compiled and run this and it works

Before you were only adding one label and button to each panel. You had 10 panels each with 1 button and one label

Upvotes: 1

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