java.lang
Class NullPointerException

java.lang.Object
  |
  +--java.lang.Throwable
        |
        +--java.lang.Exception
              |
              +--java.lang.RuntimeException
                    |
                    +--java.lang.NullPointerException

public class NullPointerException

extends RuntimeException

객체정보가 필요한 자리에 null이 존재할 때 발생하는 exception 클래스.

Constructor Summary

NullPointerException()
NullPointerException을 생성한다.

NullPointerException(String s)
NullPointerException을 생성한다.

Methods inherited from class java.lang.Throwable

getMessage, printStackTrace, toString

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

NullPointerException

public NullPointerException()

NullPointerException을 생성한다.

NullPointerException

public NullPointerException(String s)

NullPointerException을 생성한다.

Parameters:

s - NullPointerException의 세부 메세지.