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java.lang.Objectjava.lang.Throwable
java.lang.Exception
java.lang.RuntimeException
java.lang.NullPointerException
@TransactionType(value=NOT_SUPPORTED) public class NullPointerException
Thrown when an application attempts to use null
in a case
where an object is required. These include:
null
object.
null
object.
null
as if it were an array.
null
as if it were an
array.
null
as if it were a Throwable
value.
Applications should throw instances of this class to indicate other illegal
uses of the null
object.
Direct instances of this exception class are not bound to any context and can be
passed between contexts without any restrictions. Objects created and returned
by the methods of this class are owned by the caller. In particular, a call to the Throwable.getMessage()
returns a String instance bound to the owner context of the caller.
See Runtime Environment Specification for the Java Card Platform, Connected Edition, chapter 7 for details regarding transfer of ownership.
Constructor Summary | |
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NullPointerException()
Constructs a NullPointerException with no detail message. |
|
NullPointerException(String s)
Constructs a NullPointerException with the specified
detail message. |
Method Summary |
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Methods inherited from class java.lang.Throwable |
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getMessage, printStackTrace, toString |
Methods inherited from class java.lang.Object |
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equals, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public NullPointerException()
NullPointerException
with no detail message.
public NullPointerException(String s)
NullPointerException
with the specified
detail message.
s
- the detail message.
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