public classgc
{
public static void main(String args[])
{
System.gc();
System.out.println("garbage collection is required using system.gc()");
runtime.getruntime().gc();
System.out.println("garbage collection is required using system.gc()");
Sytsem.out.println("free menory:"+runtime.getruntime() freememory()+"bytes");
System.out.println("total memory:"+runtime.getruntime().totalmemory()+"bytes");
System.out.println("available processors"+runtime.getruntime()available processors());
runtime.getruntime().exit(0);
System.out.println("this linewill not be executed");
}
}