g.java

从字符串中删除字符

import java.applet.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
public class G extends Applet implements ActionListener
{
 Label a,b;
 TextField input1,input2;
 String c,f;
 int i=0,j=0,d;
  public void init()
  {
    a=new Label("请输入一字符串：");
    b=new Label("请输入一字符：");
    input1=new TextField(20);input2=new TextField(1);
    add(a);
    add(input1);
    add(b);
    add(input2);
    input2.addActionListener(this);	
  }	
  
 

  
  public void paint(Graphics g)
  {
    g.drawString("经删除后的字符串为："+f,10,70);	
  }
  public void actionPerformed(ActionEvent e)
  { 
    f="";
    c=input1.getText();
     d=(int)(input2.getText().charAt(0));
     
  /*do
  {
     i=c.indexOf(d,0);
     c.deleteCharAt(i);
     
     	
  }while(i!=-1);*/
  
  while((j=c.indexOf(d,i))!=-1)
  {
  	System.out.println(i+","+j+","+(j-i));
    f=f+c.substring(i,j);                //取子字符串
    i=j+1;	
  }
  f=f+c.substring(i,c.length());
  
  	
  repaint();
  i=0;
}

}