Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.GroupLayout;
import javax.swing.GroupLayout.ParallelGroup;
import javax.swing.GroupLayout.SequentialGroup;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.LayoutStyle.ComponentPlacement;

public class Main extends JFrame {

    private final JLabel[] labels = { new JLabel("Label 0"), new JLabel("Label 1"), new JLabel("Label 2"),
            new JLabel("Label 3"), new JLabel("Label 4"), new JLabel("Label 5"), new JLabel("Label 6"),
            new JLabel("Label 7"), new JLabel("Label 8"), new JLabel("Label 9") };

    public Main() {
        setDefaultCloseOperation(EXIT_ON_CLOSE);

        Container pane = getContentPane();
        GroupLayout gl = new GroupLayout(pane);
        pane.setLayout(gl);

        gl.setAutoCreateGaps(true);
        gl.setAutoCreateContainerGaps(true);

        JButton btn = new JButton("Switch");
        btn.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                for (int i = 1; i < 9; i++) {
                    labels[i].setVisible(!labels[i].isVisible());
                }
            }
        });

        gl.setHonorsVisibility(false);

        SequentialGroup seqGroup = gl.createSequentialGroup();
        gl.setHorizontalGroup(seqGroup);
        seqGroup.addComponent(btn);
        seqGroup.addPreferredGap(ComponentPlacement.UNRELATED, 10, 10);
        for (int i = 0; i < 10; i++) {
            seqGroup.addComponent(labels[i]);
            seqGroup.addPreferredGap(ComponentPlacement.UNRELATED, 10, 10);
        }
        ParallelGroup parGroup = gl.createParallelGroup();
        gl.setVerticalGroup(parGroup);
        parGroup.addComponent(btn);

        for (int i = 0; i < 10; i++) {
            parGroup.addComponent(labels[i]);
        }
        pack();
    }

    public static void main(String[] args) {
        Main ex = new Main();
        ex.setVisible(true);
    }
}