There is a garbage collection mechanism in Java, but there are also problems with memory leaks, because

The answer is yes, but I can't answer the interviewer's question with this sentence.
Analysis: Java is a garbage collection mechanism, in such a context, memory leaks are also known as "unconscious object hold." If an object reference is left unconscious, the garbage collector not only handles the object, but also does not handle other objects referenced by the object. A "Memory leak" is a memory in which some memory is not recoverable.
For example, if a stack (stack class) is first put into a stack, and then the stack operation is done, then the objects that are ejected will not be garbage collected, even if the client program using the stack no longer references these objects because there is a reference to the pop-up objects inside the stack. This is determined by the Stack class's own mechanism for managing memory.

There is a garbage collection mechanism in Java, but there are also problems with memory leaks, because