Java示例继续使用

public class Main {

   public static void main(String[] args) {

      StringBuffer searchstr = new StringBuffer(

         "hello how are you. ");

      int length = searchstr.length();

      int count = 0;



      for (int i = 0; i < length; i++) {

         if (searchstr.charAt(i) != 'h')continue;

         count++;

         searchstr.setCharAt(i, 'h');

      }

      System.out.println("Found " + count + " h's in the string.");

      System.out.println(searchstr);

   }

}