猜数字小游戏

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

public class Guess {
int truex;
Frame f;
Button bgo,bnew,bexit;
TextField textF;
Label l,l2;

public void guessNum(){
f = new Frame ("猜数字");
textF = new TextField(10);
bgo = new Button ("试试");
bnew = new Button ("新游戏");
bexit = new Button ("退出");
l = new Label(" 猜猜这个数字 范围0-99 ");
l2 = new Label (" By zHc");
f.setLayout(new FlowLayout());
f.add(l);
f.add(textF);
f.add(bgo);
f.add(bnew);
f.add(bexit);
f.add(l2);

f.setSize(200,200);

bgo.addActionListener(new ActionListener(){
public void actionPerformed (ActionEvent e){
testNum();
}
});
bnew.addActionListener(new ActionListener(){
public void actionPerformed (ActionEvent e){
newNum();
}
});
bexit.addActionListener(new ActionListener(){
public void actionPerformed (ActionEvent e){
System.exit(0);
}
});
f.setVisible(true);
newNum();
}

void newNum(){
truex = (int)(Math.random()*100);
l.setText(" 猜猜这个数字 范围0-99 ");
f.requestFocus();
}
void testNum(){
int x=0;
try{
x = Integer.parseInt(textF.getText());
}
catch (Exception e){
l.setText("请输入合法的数字!!!");
textF.requestFocus();
}
if (x<truex) l.setText("小了!!!");
else if (x>truex) l.setText("大了!!!");
else l.setText("猜对啦!!!");


}

public static void main(String[] args){
Guess g = new Guess();
g.guessNum();
}

}