APCS Java Subset

ap.java.lang
Class NullPointerException

java.lang.Object
  extended byjava.lang.Throwable
      extended byjava.lang.Exception
          extended byjava.lang.RuntimeException
              extended byap.java.lang.NullPointerException
All Implemented Interfaces:
java.io.Serializable

public class NullPointerException
extends java.lang.RuntimeException

Students should understand this error/exception when it occurs in a program.

An object of this class is thrown when a program attempts to use null when an object is required. For example:

See Also:
Serialized Form

Constructor Summary
NullPointerException()
           
 
Methods inherited from class java.lang.Throwable
fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

NullPointerException

public NullPointerException()

unofficial documentation for the APCS Java Subset