class1.java

矩阵乘法的计算程序

import java.awt.*;
import java.awt.event.*;
class Handler1 implements KeyListener{
 TextArea ta;
	public void keyTyped(KeyEvent ev){
		System.out.println("keyTyped");
		System.out.println(ta.getText());
	}
	
	public void keyPressed(KeyEvent ev){
		System.out.println("KeyPressed");
	}	
		
	public void keyReleased(KeyEvent ev){
		System.out.println("KeyReleased");
		
		System.out.println(ev.getKeyModifiersText
			(ev.getModifiers()));
	}
}

class Handler implements ActionListener {
	TextField tf;
	public void actionPerformed(ActionEvent e){
		System.out.println(tf.getText());
	}
}	
public class Class1
{
	public static void main (String[] args)
	{
		Frame f=new Frame();
		Handler handler=new Handler();
		Handler1 handler1=new Handler1();
		TextField tf1,tf2;
		f.setLayout(new FlowLayout(FlowLayout.CENTER,10,10 ));
		tf1=new TextField();
		tf2=new TextField("Hello!",20);
		TextArea ta=new TextArea("Hello",5,30);//初始字符,行数,列数
		f.add(tf1);
		f.add(tf2);
		f.add(ta);
		handler.tf=tf2;
		tf2.addActionListener(handler);
		handler1.ta=ta;
		ta.addKeyListener(handler1);
		f.setSize(300,200);
		f.show();

	
	}
}