testanddebug.java

Java程序设计技巧与开发实例附书源代码。

public class TestAndDebug
{  public static String replace(String s, String old, String with)
   {  String newString = "";
      String remainder = s;
      if (remainder.indexof(old) > 0)
      {  int start = remainder.indexof(old);
         int end   = start + old.length + 1;
         newString = remainder.subString(0, start) + with;
         remainder = remainder.subString(end, remainder.length);
      }
      return newString + remainder;
   }
}