What is NullPointerException In Java Core Java Interview Question And Answer

NullPointerException in Java Explain ?
*
* comes when a member of an object either field or method is called on a object which is null.

2."null" is a keyword in Java which means nothing and calling method on Object whose value is
null will result in NullPointerException.

3.Since default value of Object is null, if you call any method or access any field on an Object
which is not initialized will throw NullPointerException.

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