public classNullPointerExceptionextendsRuntimeException
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 aThrowable value. Applications should throw instances of this class to indicate other illegal uses of thenull object.NullPointerException objects may be constructed by the virtual machine as ifsuppression were disabled and/or the stack trace was not writable.
| Constructor | Description |
|---|---|
NullPointerException() | Constructs a NullPointerException with no detail message. |
NullPointerException(String s) | Constructs a NullPointerException with the specified detail message. |
addSuppressed,fillInStackTrace,getCause,getLocalizedMessage,getMessage,getStackTrace,getSuppressed,initCause,printStackTrace,printStackTrace,printStackTrace,setStackTrace,toStringpublic NullPointerException()
NullPointerException with no detail message.public NullPointerException(String s)
NullPointerException with the specified detail message.s - the detail message.