Recall & Review
beginner
What is object lifetime in Java?
Object lifetime is the period during which an object exists in memory, from creation until it is no longer reachable and is removed by the garbage collector.
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beginner
When does an object in Java get created?
An object is created when the
new keyword is used, which allocates memory for the object on the heap.touch_appClick to reveal answer
beginner
What causes an object to become eligible for garbage collection?
An object becomes eligible for garbage collection when there are no more references pointing to it, meaning the program can no longer access it.
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intermediate
Explain the role of the garbage collector in object lifetime.
The garbage collector automatically frees memory by removing objects that are no longer reachable, ending their lifetime and preventing memory leaks.
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intermediate
What happens if an object is still referenced but no longer needed?
If an object is still referenced, it will not be collected by the garbage collector, even if it is no longer needed, which can cause memory to be used unnecessarily.
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When is an object in Java removed from memory?
What keyword is used to create a new object in Java?
Which memory area stores Java objects during their lifetime?
What happens if an object is still referenced but no longer needed?
Which of these is NOT true about Java's garbage collector?
Describe the lifecycle of a Java object from creation to removal.
Explain why understanding object lifetime is important for Java programmers.