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☕🎓JAVA CERTIFICATION QUESTION: autobosing and ==

· java,ocp

Given:

What is the output of the given code fragment?

#java #certificationquestion #ocp

Answer: false true true

Variables d1 and d2 are referencing objects of the wrapper type Double.

The == operator compares objects by reference, which means the expression d1==d2 evaluates to false.

However, when a primitive value is compared with an instance of a wrapper class, the instance is automatically unboxed.

Consequently, both expressions d2==d3 and d3==d1 evaluate to true.