Java-Programming-Exercises/TextAreal.java at master · RoyTien/Java-Programming-Exercises · GitHub

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import javax.swing.*;

import java.awt.*;

import java.awt.event.*;

public class TextAreal implements ActionListener, ItemListener {

JTextArea text;

JCheckBox check;

public static void main(String[] args){

TextAreal gui = new TextAreal();

gui.go();

}

public void go(){

JFrame frame = new JFrame();

JPanel panel = new JPanel();

JButton button = new JButton("Just click it");

check = new JCheckBox("Gogogo");

panel.setLayout(new BoxLayout(panel,BoxLayout.Y_AXIS));

button.addActionListener(this);

text = new JTextArea(10,20);

text.setLineWrap(true);

JScrollPane scroller = new JScrollPane(text);

scroller.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);

scroller.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);

panel.add(scroller);

panel.add(check);

frame.getContentPane().add(BorderLayout.CENTER,panel);

frame.getContentPane().add(BorderLayout.SOUTH,button);

frame.setSize(350,300);

frame.setVisible(true);

check.addItemListener(this);

}

public void actionPerformed(ActionEvent ev){

text.append("Button clicked\n");

}

public void itemStateChanged(ItemEvent ev){

String onOrOff = "off";

if(check.isSelected()) onOrOff = "on";

text.append("check box is "+onOrOff + "\n");

}

Java-Programming-Exercises/TextAreal.java at master · RoyTien/Java-Programming-Exercises · GitHub

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