9주차 1번문제

P9_1 강의자료에 나오는 ButtonTester 프로그램을 수정하여 버튼이 클릭될 때마다 "I was clicked 1 time(s)!", "I was clicked 2 time(s)!", "I was clicked 3 time(s)!" ... 메시지가 콘솔창에 프린트되게 하시오. (힌트: ActionListener 객체가 count를 위한 필드를 갖도록 하면 됩니다.)

ButtonTester

package p9_1; import java.awt.event.ActionListener; import javax.swing.JButton; import javax.swing.JFrame; public class ButtonTester { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub JFrame frame = new JFrame(); JButton button = new JButton("Click me!"); frame.add(button); ActionListener listener = new ClickListener(); button.addActionListener(listener); frame.setSize(FRAME_WIDTH,FRAME_HEIGHT); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setVisible(true); } private static final int FRAME_WIDTH = 100; private static final int FRAME_HEIGHT = 60; } ClickListener package p9_1; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; public class ClickListener implements ActionListener { public void actionPerformed(ActionEvent event){ System.out.println("I was clicked "+(count++)+"time(s)!"); } private int count = 1; }