XyzWs Java FAQ

XyzWs Java FAQ

XyzWs Java FAQ

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	Why always override hashcode method if overriding the equals method?

	What is instanceof?

	What are method overloading and method overriding?

	Why am I getting unreported exception when the super class default constructor has a 'throws' clause?

	What is the difference between the 'bit-wise AND' and the 'conditional AND' operators?

	Does Java support multidimensional arrays?

	Why the fully qualified name of a static final variable is not allowed in static initialization block?

	What is the difference(or relation) between the Comparator and the Comparable interfaces?

	Can a private method be overridden?

	What is the difference between implementing Runnable and extending Thread?

	Run time binding or compile time binding?

	How does a static method access instance variables?

	What is the difference between compile time error and run time error?

	Why doesn't Iterator work for my collection?

	Why does the autoboxing conversion sometimes return the same reference?

	When is an explicit object reference casting is required?

	Why narrowing primitive conversions from primitive long requires explicit casting?

	What is the difference between an abstract class and an interface?

	What are mutable objects and immutable objects?

	Can an overriding method have a different return type than the overridden method?

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