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Java
Class.forName().newInstance() vs new
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[QUOTE="Joshua Cranmer, post: 4219508"] One particular difference is that, as new uses a class already in the constant pool, the lookup only needs to be done at most once per file, since it is otherwise indexed by an integer into a cache. Class.forName will have a slightly more expensive lookup, since it needs to index a hashtable by a String. [/QUOTE]
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Class.forName().newInstance() vs new
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