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Garbage collection is an operation that happens automatically in Java. We cannot write programs to perform them. All we can do is call the system's implementation of the Garbage collector and hope that it would execute.

"Runtime.gc();"

Place the above piece of code in your code, if you want to invoke the garbage collector. Invoking the runtime's implementation of the gc does not guarantee the execution of the garbage collector. It may or may not run. The JVM decides on that.

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Memorymically and and not reclaming it when it is no longer it is needed in java there is no such problem as there is as garbage collector what is it?

I guess you want to talk about the garbage collector feature that Java has. The garbage collector is an automated program that the Java virtual machine would run once in a while. This program would clean up unused memory to ensure that there is enough memory available for the programs. you can invoke the garbage collector by calling the system.gc() method but this does not guarantee an invocation of the garbage collector. the JVM may or may not call the GC when we invoke it...


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