package find_repalce_keywords;

 import java.io.BufferedReader;

 import java.io.IOException;

 import java.io.InputStreamReader;

 public class find_repalce_keywords {

     public static void main(String[] args) {

         String s="hlz_and_hourui哈哈";

         //java自带替换

         String new_S=s.replaceAll("哈", "笑毛");

         System.out.println(new_S);

         String input = null;

         String finding=null;

         System.out.println("enter a string:");

         System.out.flush();

         try {

             input=getString();

         } catch (IOException e) {

             e.printStackTrace();

         }

         System.out.println("输入你想查找的词");

         try {

             finding=getString();

         } catch (IOException e) {

             e.printStackTrace();

         }

         FindAndRepace far=new FindAndRepace();

             far.repalce(input, finding);

     }

     //I/O操作

     public static String getString() throws IOException {

         InputStreamReader isr=new InputStreamReader(System.in);

         BufferedReader br=new BufferedReader(isr);

         String s=br.readLine();

         return s;

     }

 }

 class FindAndRepace

 {

     int i=0;

     public int repalce(String str,String finding)

     {

         if(str.indexOf(finding, i)!=-1)

         {

             System.out.print("要找的"+finding+"在"+(str.indexOf(finding, i)+1)+"||||");

             i=str.indexOf(finding, i)+1;

             repalce(str, finding);//递归

         }

         else

         {

             System.out.println("搜索结束");

         }

         return i;

     }

 }