Java in a Nutshell

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The java.lang Package
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25.44 java.lang.NullPointerException (JDK 1.0)

Signals an attempt to access a field or invoke a method of a null object.

public class NullPointerException extends RuntimeException {
    // Public Constructors
            public NullPointerException();
            public NullPointerException(String s);
}

Hierarchy:

Object->Throwable(Serializable)->Exception->RuntimeException->NullPointerException


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