GarbageCollection.java

// Program to Demonstrate Garbage Collection

import java.util.*;
class GarbageCollection
{
    public static void main(String args[]) throws Exception
    {
        Runtime rs = Runtime.getRuntime();
        System.out.println("Free Memory in JVM before Garbage Collection :- "+rs.freeMemory());
        rs.gc();
        System.out.println("Free Memory in JVM after Garbage Collection :- "+rs.freeMemory());
    }
}