findmax.java

Java与面向对象程序设计实验教学讲义.复数类的实现,复数类的复杂运算,身份证号码的分析,图形界面设计

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

public class FindMax extends Applet implements ActionListener{
	Label result;
	TextField in1,in2,in3;
	Button btn;
	int a=0, b=0, c=0,max;
	
	public void init(){
		result= new Label("请先输入三个待比较的整数");
		in1=new TextField(5);
		in2=new TextField(5);
		in3=new TextField(5);
		btn=new Button("比较");
		
		add(in1);
		add(in2);
		add(in3);
		add(btn);
		add(result);
		
		btn.addActionListener(this);
		}

    public static void main(String args[]){
    	
    	FindMax find = new FindMax( );
    	
    	Frame f = new Frame("Find Max ");
    	f.addWindowListener( new WindowAdapter(){
    		public void windowClosing(WindowEvent e){
    			System.exit(0);
        	}
        });
        
    	f.setLayout( new FlowLayout());
    	f.setSize(400,100);
    	
    	
    	f.add(find);
    	find.init();
    	
    	f.setVisible(true);
    	
    }
    	

		
	public void actionPerformed(ActionEvent e){
		a=Integer.parseInt(in1.getText());
		b=Integer.parseInt(in2.getText());
		c=Integer.parseInt(in3.getText());
		
		if (a>b)
			max=(a>c?a:c);
		else
			max=(b>c?b:c);
			
		result.setText("三个数中最大值是："+max);
		}
	}