|
APCS Java Subset | |||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Objectjava.lang.Throwable
java.lang.Exception
java.lang.RuntimeException
ap.java.lang.NullPointerException
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:
null
object.
null
object.
null
as if it were an array.
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 |
public NullPointerException()
|
unofficial documentation for the APCS Java Subset | |||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |