What will be the initial value of an object reference which is defined as an instance variable?
What will be the initial value of an object reference which is defined as an instance variable?
✍: Guest
The object references are all initialized to null in Java. However in order to do anything useful with these references, you must set them to a valid object, else you will get NullPointerExceptions everywhere you try to use such default initialized references.
2013-06-28, 2200👍, 0💬
Related Topics:
Is next a keyword in Java?
Is next a keyword in Java? No, next is not a keyword. 2013-06-26, 3102👍, 0💬
Is main a keyword in Java?
Is main a keyword in Java? No, main is not a keyword in Java. 2013-06-25, 2922👍, 0💬
Is exit a keyword in Java?
Is exit a keyword in Java? No. To exit a program explicitly you use exit method in System object. 2013-06-27, 2578👍, 0💬
Can main method be declared final?
Can main method be declared final? Yes, the main method can be declared final, in addition to being public static. 2013-07-02, 2533👍, 0💬