import java.util.*; class GarbageCollection { public static void main(String s[]) throws Exception { Runtime rs = Runtime.getRuntime(); System.out.println("Free memory in jvm (Java Virtual Machine) before Garbage Collection = "+rs.freeMemory()); rs.gc(); System.out.println("Free memory in jvm (Java Virtual Machine) after Garbage Collection = "+rs.freeMemory()); } }