//StringBuffer 클래스의 insert 멤버 메서드 사용 예

public class Program {

        public static void main(String[] args){

               StringBuffer origin = new StringBuffer("01234567890");

               origin.insert(2, true);

               System.out.println(origin);

               origin.insert(2, 'z');

               System.out.println(origin);

               char[] sarr = {'e','h','c','l','u','b'};

               origin.insert(2, sarr);

               System.out.println(origin);

               origin.insert(2, sarr,3,2);

               System.out.println(origin);

               origin.insert(2, 3.14);        

               System.out.println(origin);

               origin.insert(2, 0.5f);

               System.out.println(origin);

               origin.insert(2, 20);

               System.out.println(origin);

               origin.insert(2, 21l);

               System.out.println(origin);

               origin.insert(2, "hello");

               System.out.println(origin);

        }

}

01true234567890

01ztrue234567890

01ehclubztrue234567890

01luehclubztrue234567890

013.14luehclubztrue234567890

010.53.14luehclubztrue234567890

01200.53.14luehclubztrue234567890

0121200.53.14luehclubztrue234567890

01hello21200.53.14luehclubztrue234567890