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Why JavaBean ?

If we are passing 5 values from the main() àDAO, so we are declaring 5 references in the main() and 5 references in the DAO. Totally it becomes 10 references.
10 references means it allocates totally 10*4 = 40 bytes of memory, for 1 reference it allocates 4 bytes of memory. So if we construct an object we can save the reference variables memory.**
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