java.lang
Class NullPointerException

java.lang.Object sample code for java.lang.Object definition code for java.lang.Object 
  extended by java.lang.Throwable sample code for java.lang.Throwable definition code for java.lang.Throwable 
      extended by java.lang.Exception sample code for java.lang.Exception definition code for java.lang.Exception 
          extended by java.lang.RuntimeException sample code for java.lang.RuntimeException definition code for java.lang.RuntimeException 
              extended by java.lang.NullPointerException
All Implemented Interfaces:
Serializable sample code for java.io.Serializable definition code for java.io.Serializable

public class NullPointerException
extends RuntimeException sample code for java.lang.RuntimeException definition code for java.lang.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
See Also:
Serialized Form

Constructor Summary
NullPointerException sample code for java.lang.NullPointerException.NullPointerException() definition code for java.lang.NullPointerException.NullPointerException() ()
          Constructs a NullPointerException with no detail message.
NullPointerException sample code for java.lang.NullPointerException.NullPointerException(java.lang.String) definition code for java.lang.NullPointerException.NullPointerException(java.lang.String) (String sample code for java.lang.String definition code for java.lang.String  s)
          Constructs a NullPointerException with the specified detail message.
 
Method Summary
 
Methods inherited from class java.lang.Throwable sample code for java.lang.Throwable definition code for java.lang.Throwable
fillInStackTrace sample code for java.lang.Throwable.fillInStackTrace() definition code for java.lang.Throwable.fillInStackTrace() , getCause sample code for java.lang.Throwable.getCause() definition code for java.lang.Throwable.getCause() , getLocalizedMessage sample code for java.lang.Throwable.getLocalizedMessage() definition code for java.lang.Throwable.getLocalizedMessage() , getMessage sample code for java.lang.Throwable.getMessage() definition code for java.lang.Throwable.getMessage() , getStackTrace sample code for java.lang.Throwable.getStackTrace() definition code for java.lang.Throwable.getStackTrace() , initCause sample code for java.lang.Throwable.initCause(java.lang.Throwable) definition code for java.lang.Throwable.initCause(java.lang.Throwable) , printStackTrace sample code for java.lang.Throwable.printStackTrace() definition code for java.lang.Throwable.printStackTrace() , printStackTrace sample code for java.lang.Throwable.printStackTrace(java.io.PrintStream) definition code for java.lang.Throwable.printStackTrace(java.io.PrintStream) , printStackTrace sample code for java.lang.Throwable.printStackTrace(java.io.PrintWriter) definition code for java.lang.Throwable.printStackTrace(java.io.PrintWriter) , setStackTrace sample code for java.lang.Throwable.setStackTrace(java.lang.StackTraceElement[]) definition code for java.lang.Throwable.setStackTrace(java.lang.StackTraceElement[]) , toString sample code for java.lang.Throwable.toString() definition code for java.lang.Throwable.toString()
 
Methods inherited from class java.lang.Object sample code for java.lang.Object definition code for java.lang.Object
clone sample code for java.lang.Object.clone() definition code for java.lang.Object.clone() , equals sample code for java.lang.Object.equals(java.lang.Object) definition code for java.lang.Object.equals(java.lang.Object) , finalize sample code for java.lang.Object.finalize() definition code for java.lang.Object.finalize() , getClass sample code for java.lang.Object.getClass() definition code for java.lang.Object.getClass() , hashCode sample code for java.lang.Object.hashCode() definition code for java.lang.Object.hashCode() , notify sample code for java.lang.Object.notify() definition code for java.lang.Object.notify() , notifyAll sample code for java.lang.Object.notifyAll() definition code for java.lang.Object.notifyAll() , wait sample code for java.lang.Object.wait() definition code for java.lang.Object.wait() , wait sample code for java.lang.Object.wait(long) definition code for java.lang.Object.wait(long) , wait sample code for java.lang.Object.wait(long, int) definition code for java.lang.Object.wait(long, int)
 

Constructor Detail

NullPointerException sample code for java.lang.NullPointerException() definition code for java.lang.NullPointerException()

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


NullPointerException sample code for java.lang.NullPointerException(java.lang.String) definition code for java.lang.NullPointerException(java.lang.String)

public NullPointerException(String sample code for java.lang.String definition code for java.lang.String  s)
Constructs a NullPointerException with the specified detail message.

Parameters:
s - the detail message.