Java-替换字符串中的子字符串

自顶一个repace方法

 package com.tj;

 public class MyClass implements Cloneable {
     public static void main(String[] args) {
         String s = MyClass.replace("Hello World", "o", "x");
         System.out.println(s);
     }

     static String replace(String str, String pattern, String replace) {
         int s = 0;
         int e = 0;
         StringBuffer result = new StringBuffer();

         while ((e = str.indexOf(pattern, s)) >= 0) {
             result.append(str.substring(s, e));
             result.append(replace);
             s = e + pattern.length();
         }
         result.append(str.substring(s));
         return result.toString();
     }
 }