I have following program that fills a vector and checks if free memory is less than no. of bytes specified in command line argument to the program.

e.g I may want to quit the program when free memory is less than 20000000 (20 MB), for that i get desired result when i run this class as

java -Xms100M -Xmx100M MemoryTest 20000000

However, if i run same class with argument as 2000000 (2 MB), I get outof memory error.

Can you pl explain how to handle this. Of course, I am delibrately not catching this exception.

It seems not working for low values of argument. The program code is:

			

			import java.util.*;
			

			class MemoryTest
			

			{
			

			public static void main(String[] args)
			

			{
			

			int i=0;
			

			Runtime rt= Runtime.getRuntime();
			

			Vector v1=new Vector();
			

			long threshold = Integer.parseInt(args[0]);
			

			while(true)
			

			{
			

			v1.addElement("filler");
			

			

			//After every 200000th time, print free memory
			

			if(i%200000 == 0)
			

			{
			

			System.out.println("Free Memory available: "+(rt.freeMemory()/1000000)+" MB");
			

			}
			

			

			//if free mem is less than args[0], exit
			

			if(rt.freeMemory()
			< threshold)
			

			{
			

			System.out.println("Free Memory is less than "+ threshold+" bytes....Exiting the program");
			

			return;
			

			}
			

			i++;
			

			}
			

			}
			

			}