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Class java.lang.NullPointerException

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

public class NullPointerException
extends RuntimeException
Thrown when an application attempts to use null in a case where an object is required. These include:

Applications should throw instances of this class to indicate other illegal uses of the null object.

Since:
JDK1.0

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, getLocalizedMessage, getMessage, printStackTrace, printStackTrace, printStackTrace, toString
 
Methods inherited from class java.lang.Object
 clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

NullPointerException

public NullPointerException()
Constructs a NullPointerException with no detail message.

NullPointerException

public NullPointerException(String s)
Constructs a NullPointerException with the specified detail message.
Parameters:
s - the detail message.

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