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A constructor in java is invoked using which keyword?

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new is used to invoke a constructor if declared in public section. Object gets the required structure in memory(heap memory). The reference is created. If constructor declared in private section of a class then object has to be referenced by member function as the case may be.
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Programming Master

a constructor in java is invoked by this keyword , because using new keyword object gets the memory indirectly constructor call by new className();
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A constructor in Java is invoked using new keyword
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