testtextevent.java

事件的处理

import java.awt.*;
import java.awt.event.*;
public class TestTextEvent extends Frame implements TextListener{

  private TextField testTF1,testTF2;
 
  public static void main(String args[]){
    TestTextEvent test=new TestTextEvent();
    test.setSize(300,200);
    test.setVisible(true);
  }

  public TestTextEvent(){
    setLayout(new GridLayout(2,1));
    testTF1=new TextField();
    testTF1.addTextListener(this);
    testTF2=new TextField();
    add(testTF1);
    add(testTF2);
  }

  public void textValueChanged(TextEvent e){
    testTF2.setText(testTF1.getText());
  }

}