Question

What is the purpose of the 'System.gc()' method?

a) To create new objects in memory
b) To eliminate objects that are no longer needed
c) To force garbage collection
d) To prioritize threads in the JVM

Answer 1

The 'System.gc()' method in Java is used to suggest to the JVM that it might be a good time to initiate garbage collection, which helps in managing memory by reclaiming unused memory space.

Step-by-step explanation:

The method System.gc() in Java is associated with garbage collection. Its purpose is not to create new objects, prioritize threads, or directly eliminate objects. Instead, it serves as a suggestion to the Java Virtual Machine (JVM) that it might be a good time to initiate garbage collection. However, it's important to note that calling System.gc() doesn't guarantee that the JVM will perform garbage collection immediately. The actual process and timing of garbage collection are up to the JVM to decide. Garbage collection is the process of reclaiming the runtime unused memory automatically by destroying the objects that no longer have any references to them, which helps in managing memory more efficiently.