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package swing;
import java.awt.Checkbox;
import java.awt.FlowLayout;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class CheckBocExam extends JFrame{
JCheckBox ch01 = new JCheckBox("등산", true); //1
JCheckBox ch02 = new JCheckBox("서핑", true);
JCheckBox ch03 = new JCheckBox("독서", false);
JPanel p = new JPanel(new FlowLayout()); //2
public CheckBocExam() {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
p.add(ch01); //3
p.add(ch02);
p.add(ch03);
add("North",p); //4
CheckboxEvextHandler handler = new CheckboxEvextHandler() ; // 8
ch01.addItemListener(handler); //9
ch02.addItemListener(handler);
ch03.addItemListener(handler);
setSize(300,300);
setVisible(true);
}
class CheckboxEvextHandler implements ItemListener { //6
@Override
public void itemStateChanged(ItemEvent e) { //7
if(e.getSource() instanceof JCheckBox) { //9
JCheckBox check = (JCheckBox)e.getSource(); //8
if(check == ch01) { //9
if(e.getStateChange() == ItemEvent.SELECTED) { //10
System.out.println("등산 선택");
}else{
System.out.println("등산 해제");
}
}
if(check == ch02) {
if(e.getStateChange() == ItemEvent.SELECTED) {
System.out.println("서핑 선택");
}else{
System.out.println("서핑 해제");
}
}
if(check == ch03) {
if(e.getStateChange() == ItemEvent.SELECTED) {
System.out.println("독서 선택");
}else{
System.out.println("독서 해제");
}
}
}
}
}
public static void main(String[] args) {
new CheckBocExam();
}
}
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cs |