NullPointerException

Thrown when an application attempts to use <code>null</code> in a case where an object is required. These include: <ul> <li>Calling the instance method of a <code>null</code> object. <li>Accessing or modifying the field of a <code>null</code> object. <li>Taking the length of <code>null</code> as if it were an array. <li>Accessing or modifying the slots of <code>null</code> as if it were an array. <li>Throwing <code>null</code> as if it were a <code>Throwable</code> value. </ul> <p> Applications should throw instances of this class to indicate other illegal uses of the <code>null</code> object.

@author unascribed @version 1.20, 11/17/05 @since JDK1.0

Constructors

this
this(string file, size_t line)

Constructs a <code>NullPointerException</code> with no detail message.

this
this(string s, string file, size_t line)

Constructs a <code>NullPointerException</code> with the specified detail message.

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