10例子11.txt

这是一本java基础教程 对新手上路有很大帮助

import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
import java.util.regex.*;
import javax.swing.event.*;
public class Example10_11{
    public static void main(String args[]){
        new PatternWindow();
    }
}
class PatternWindow extends JFrame implements DocumentListener,ActionListener{
    JTextArea inputText,showText;
    JTextField patternText;
    Pattern p;                  //模式对象
    Matcher m;                //匹配对象
    PatternWindow(){
       inputText=new JTextArea();
       showText=new JTextArea();
       patternText=new JTextField("[^\\s\\d\\p{Punct}]+");
       patternText.addActionListener(this); 
       JPanel panel=new JPanel();
       panel.setLayout(new GridLayout(1,2));
       panel.add(new JScrollPane(inputText));
       panel.add(new JScrollPane(showText));
       add(panel,BorderLayout.CENTER);
       add(patternText,BorderLayout.NORTH);
       validate();
       (inputText.getDocument()).addDocumentListener(this);   //向文档注册监视器
       setBounds(120,120,260,270);
       setVisible(true);
       setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE); 
    } 
    public void changedUpdate(DocumentEvent e){      //接口方法
       hangdleText();                              //调用后面的hangdleText()方法
    } 
    public void removeUpdate(DocumentEvent e){      //接口方法
       changedUpdate(e); 
    }
    public void insertUpdate(DocumentEvent e){        //接口方法
       changedUpdate(e);
    }
    public void hangdleText(){
       showText.setText(null);
       String s=inputText.getText();
       p=Pattern.compile(patternText.getText());        //初始化模式对象
       m=p.matcher(s);                       
       while(m.find()){
           showText.append("从"+m.start()+"到"+m.end()+":");
           showText.append(m.group()+":\n");
       } 
    }
    public void actionPerformed(ActionEvent e){
       hangdleText();
    }
}