如何获取StringBuffer对象的长度

 

public class Main {/** 来 自 N o w J a v a . c o m**/

 

  public static void main(String[] args) {

   

    StringBuffer sb = new StringBuffer("Hello World");

    int len = sb.length();

    System.out.println("Length of a StringBuffer object is : " + len);

  }

}