StringBuilder的toString互相轉換

package it.cedemo1;
/**
 *            StringBuilder 和 String  相互轉換
 *
* */

public class Demo1 {
    public static void main(String[] args) {
     //   String-> StringBuffer
        String s="這是一個字符串";
        //直接newStringBuffer 傳入S字符串換
        StringBuffer bu=new StringBuffer(s);
        System.out.println("StringBuffer:"+bu);

        //StringBuffer->String 
        String s1=bu.toString();
        System.out.println("轉String:"+s1);






    }
}