dh9text.java

来自「用Java实现的多个鼠标事件 鼠标点击事件」· Java 代码 · 共 39 行

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;

public class Dh9text extends JFrame{
	JTextField jtf=new JTextField(10);
	JTextField jtf1=new JTextField(10);
	
	Dh9text(){
		Container c=this.getContentPane();
		c.setLayout(new FlowLayout());
		
		c.add(jtf);
		
		
		jtf.addFocusListener(new FocusAdapter(){
			public void mouseGained(FocusEvent e){
				jtf.setSelectionStart(0);
				jtf.setSelectionEnd(jtf.getText().length());
			}
		});
		jtf.addCaretListener(new CaretListener(){
			public void caretUpdate(CaretEvent e){
				jtf1.setText(jtf.getSelectedText());
			}
		});
		c.add(jtf1);
		jtf.setSelectedTextColor(Color.white);
		jtf.setSelectionColor(Color.red);
		this.setSize(300,200);
		this.setVisible(true);
		
	}
	public static void main(String[] args){
		setDefaultLookAndFeelDecorated(true);
		new Dh9text();
	}
}