TextEvent事件小实例一个

来源：互联网发布：melon软件下载编辑：程序博客网时间：2024/04/30 19:32

package TextEvent;
import java.*;
import java.awt.Button;
import java.awt.FlowLayout;
import java.awt.Frame;
import java.awt.TextArea;
import java.awt.event.*;
import java.util.*;
class WindowTextArea extends Frame implements TextListener,ActionListener {
TextArea text1,text2;
Button buttonClear;
public WindowTextArea() {
setLayout(new FlowLayout());
text1=new TextArea(6,15);
text2=new TextArea(6,15);
buttonClear=new Button("清空");
add(text1);
add(text2);
add(buttonClear);
text2.setEditable(false);
text1.addTextListener(this);
buttonClear.addActionListener(this);
setBounds(100,100,350,160);
setVisible(true);
validate();

}
public void textValueChanged(TextEvent e)
{
String s=text1.getText();
String string=text1.getText();
StringTokenizer fenxiStringTokenizer=new StringTokenizer(s,",'/n'");
int n=fenxiStringTokenizer.countTokens();
String a[]=new String[n];
for(int i=0;i<=n-1;i++)
{
  String temp=fenxiStringTokenizer.nextToken();
  a[i]=temp;
}
Arrays.sort(a);
text2.setText(null);
for(int i=0;i<n;i++)
{
  text2.append(a[i]+"/n");

}
}
public static void main(String[] args)
{
WindowTextArea windowTextArea=new WindowTextArea();

}
public void actionPerformed(ActionEvent e)
{
text1.setText(null);
}
}