test.java~15~

JAVA做的计算器 十分和WINDOWS自带的相似

package calc;

import java.awt.*;
import java.awt.event.*;

public class Test extends Frame implements KeyListener,ActionListener{

public Test(int i,int j) {
addKeyListener(this);
setLayout(new FlowLayout(1));
setSize(i, j);
pack();
setVisible(true);
this.setFocusable(true);
}
//实现ActionListener接口方法
public void actionPerformed(ActionEvent a) {
}
//实现keylistener的3个方法
public void keyTyped(KeyEvent e){
System.out.println("KeyTyped"+" "+e);
}
public void keyPressed(KeyEvent e){
System.out.println("KeyPressed"+" "+e);
}
public void keyReleased(KeyEvent e){
System.out.println("KeyReleased"+" "+e);
}

public static void main(String[] args) {
Test my=new Test(300,300);
my.setSize(200,200);
}

}