System클래스

public classSystemEx01 {

 

             /**

              * @param args

              */

             public static voidmain(String[]args) {

                           // TODOAuto-generated method stub

                           if(args.length !=1){

                                    System.out.println("인자의 갯수가 틀립니다.");

                                        // 시스템 시간을1000분의 1초로 표현

                                    System.out.println("실행 시간 :" + System.currentTimeMillis());

                                        // 프로그램을 종료시킴

                                    System.exit(0);

                           }

                                    System.out.println("실행코드");

                          

             }

 

} 

 

인자의 갯수가 틀립니다.
실행 시간 : 1359689452823