一个APPLET小程序用来猜数字.

				import javax.swing.*;
				import java.applet.Applet;
				import java.awt.*;
				import java.lang.*;
				import java.awt.event.*;
				
				public class text extends Applet implements ActionListener{
					TextField text1;Button but1;Label lab1;Label lab2;
					double num=100+(200-100)*Math.random() ;
					int intnum=0;
					int temp=0;
					public void init(){
						setLayout(new FlowLayout());
						text1=new TextField(20);
						but1=new Button("猜");
						lab1=new Label("请你输入100——200之间的数值!",Label.LEFT);
						lab2=new Label(" ",Label.CENTER);
						add(lab1);
						add(text1);
						add(but1);
						
						add(lab2);
						text1.addActionListener(this);
						but1.addActionListener(this);
						this.setSize(350,150);
					}
				
					public void actionPerformed(ActionEvent e) {
						
						intnum=(int)num;
						if(e.getSource()==but1){
							temp=Integer.parseInt( text1.getText());
							if(temp>100&&temp								if(temp>intnum){
									lab2.setText("大了");
								}
								else if(temp									lab2.setText("小了");
								}
								else 
									lab2.setText("您答对啦!答案就是"+intnum);
							}
							else
								lab2.setText("超出数据范围");
						}
						
					}
				}