What is garbage collection in Java Mcq?

What is garbage collector pause Mcq?

Explanation: The thread is paused when garbage collection runs which slows the application performance.

Which objects are eligible for garbage collection in java Mcq?

Only objects that have no reference variables referring to them can be eligible for GC. java. lang. System classes.

What is true about garbage collection Mcq?

All objects that are eligible for garbage collection will be garbage collected by the garbage collector. Objects with at least one reference will never be garbage collected. Objects from a class with the finalize() method overridden will never be garbage collected.

What is the purpose of garbage collection?

Garbage collection (GC) is a dynamic approach to automatic memory management and heap allocation that processes and identifies dead memory blocks and reallocates storage for reuse. The primary purpose of garbage collection is to reduce memory leaks.

What is false constructor?

What is false about constructor? Explanation: The constructor cannot have a return type. It should create and return new objects. Hence it would give a compilation error.

Can we force garbage collector to run in Java?

You really can’t force Java GC. The Java garbage collection algos are non-deterministic, and while all of these methods can motivate the JVM to do GC, you can’t actually force it.

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Which interpreter is used in Java?

In Java the Interpreter is known as JIT (Just in time) compiler, which translates the . class file into machine code for execution on the host machine.

Which object is eligible for garbage collection?

An object is marked as eligible to be garbage collected when it can no longer be accessed, which can happen when the object goes out of scope. It can also happen when an object’s reference variable is assigned an explicit null value or is reinitialized.

What is the full form of JVM?

The Java Virtual Machine (JVM) is the runtime engine of the Java Platform, which allows any program written in Java or other language compiled into Java bytecode to run on any computer that has a native JVM.

Why do we use constructor overloading Mcq?

Why do we use constructor overloading? Explanation: The constructors are overloaded to initialize the objects of a class in different ways. This allows us to initialize the object with either default values or used given values. If data members are not initialized then program may give unexpected results.

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