java----stringBuffer之二

package cn.hncu.stringBuffer2;


public class StringBufferDemo {


public static void main(String[] args) {
//String str ="aa"+"123"+"cc";
//str = "qq";

StringBuffer sb1 = new StringBuffer();
System.out.println("初始容量:"+sb1.capacity());
System.out.println("初始长度:"+sb1.length());
sb1.append("aa1122211221112").append("1dedwe23").append("cc");
System.out.println(sb1.toString());
System.out.println("当前容量:"+sb1.capacity());
System.out.println("当前长度:"+sb1.length());

sb1.insert(1, "###");
System.out.println( sb1.toString() );
}


}