java.lang
Class NullPointerException

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

public class NullPointerException

extends RuntimeException

Signals the illegal use of a null pointer.

Constructor Summary

NullPointerException()
Constructs a NullPointerException with no detail message.

NullPointerException(String s)
Constructs a NullPointerException with the specified detail message.

Methods inherited from class java.lang.Throwable

fillInStackTrace, getMessage, printStackTrace, printStackTrace, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

NullPointerException

public NullPointerException()

Constructs a NullPointerException with no detail message. A detail message is a String that describes this particular exception.

NullPointerException

public NullPointerException(String s)

Constructs a NullPointerException with the specified detail message. A detail message is a String that describes this particular exception.

Parameters:

s - the detail message