StringBuilder构造函数。

public class Main // 来 自 N o  w  J a v a . c o m - 时  代  Java

{

   public static void main(String[] args)

   {

      StringBuilder buffer1 = new StringBuilder();

      StringBuilder buffer2 = new StringBuilder(10);

      StringBuilder buffer3 = new StringBuilder("hello");


      System.out.printf("buffer1 = \"%s\"\n", buffer1);

      System.out.printf("buffer2 = \"%s\"\n", buffer2);

      System.out.printf("buffer3 = \"%s\"\n", buffer3);

   } 

}