casting Comparison Table

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casting comparison table

Subject use have example have syntax done involve perform

casting a primitive type to convert a primitive type to an object
//i is an int
//d is a double
(double) i // a double expression
(int) d // an int expression
// note that the original types of i and d remain the same
(typename)value explicitly if the destination type is smaller than the source type to avoid loss of precision a Boolean type

casting an object to convert an object to a primitive type - use a wrapper class instead
(String)i.next()
(classname)object explicitly if the destination type is a superclass of the source type if the source and destination types of the object are related by inheritance - one class must be a subclass of the other

Subject	use	have example	have syntax	done	involve	perform
casting a primitive type	to convert a primitive type to an object	//i is an int //d is a double (double) i // a double expression (int) d // an int expression // note that the original types of i and d remain the same	(typename)value	explicitly if the destination type is smaller than the source type to avoid loss of precision	a Boolean type
casting an object	to convert an object to a primitive type - use a wrapper class instead	(String)i.next()	(classname)object	explicitly if the destination type is a superclass of the source type		if the source and destination types of the object are related by inheritance - one class must be a subclass of the other

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