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;
				}
				
				}