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|Java - Interview Questions and Answers|
|Ans. Because of the life cycle requirement for different type of values in java. |
variables initialized and used in functions needs to be destructed with the execution of function and hence kept in stack. Same is applicable for the object references initialized within the method. If objects would have been created in stack, they wouldnt have been passed around across methods and hence they are created on heap.
So anything that is required beyond the scope of a method or function is kept on heap which is usually garbage collected by Java.
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