Java : StringBuffer

/*
 * Program memakai StringBuffer
 */
package programlatih47java;
/**
 * @author fachrul
 */
public class Main {
    public static void main(String[] args) {
       StringBuffer jrs = new StringBuffer();
       String kataif="sistem";
       jrs.append(kataif).append(" informasi");
       System.out.println(jrs.toString());
       System.out.println(jrs);
    }
}