Complete Java SE 8 Developer Bootcamp - Garbage Collection

The video tutorial explains memory management in Java, focusing on how Java handles memory leaks through garbage collection. It describes the process of garbage collection, how it identifies unused objects, and the role of the garbage collector. The tutorial also covers how to configure the garbage collector and introduces methods for dereferencing objects to make them eligible for garbage collection, including setting references to null and changing references.

What happens to a bank account object when the method that created it finishes execution?

• It is automatically destroyed.

• It remains in the heap but becomes inaccessible.

• It is moved to the stack.

• It is saved for later use.

What is a potential consequence of not managing memory properly in programming languages other than Java?

• Reduced memory usage.

• Increased performance.

• Memory leaks.

• Automatic garbage collection.

How does Java handle objects that are no longer referenced?

• Java moves them to a temporary storage.

• Java's garbage collector automatically removes them.

• Java ignores these objects.

• Java requires manual deletion of such objects.

What does the garbage collector do when it finds an object with no references?

• It marks the object for future use.

• It moves the object to a different memory location.

• It removes the object from the heap.

• It increases the object's priority.

What is the role of the System.gc() command in Java?

• It suggests the garbage collector to run, but it's not guaranteed.

• It forces the garbage collector to run immediately.

• It stops the garbage collector from running.

• It deletes all objects in the heap.

Which of the following is a method to explicitly dereference an object in Java?

• Calling a special delete method.

• Moving the object to the stack.

• Setting the reference to null.

• Assigning the object to a new variable.

What happens to the 'myCar' variable when the 'getDescription' method finishes?

• It is saved for later use.

• It is popped off the stack and becomes out of scope.

• It is moved to the heap.

• It remains in the stack.