GCing.java

public class GCing {
	private static final int k = 1024;
	private static final int m = k * k;
	private static final int MAX_ITERATIONS = 10;
	private static final int DEFAULT_SIZE = 640;
	private static int iterations = 1;
	private byte[] bytes;
	
	public static void main(String[] args) throws InterruptedException {
		int size = sizeFromArgumentsOrDefault(args);
		System.err.println("Size is " + size + " MB");

		while (condition()) {
			process(size);
		}
	}

	private static void process(int size) {
		long milis = System.currentTimeMillis();

		GCing gcing1 = new GCing(size * m);

		System.err.println("Milis: " + (System.currentTimeMillis() - milis));
	}

	private static boolean condition() {
		return iterations++ <= MAX_ITERATIONS;
	}

	private static int sizeFromArgumentsOrDefault(String[] args) {
		if (args == null || args.length == 0)
			return DEFAULT_SIZE;
		int size = DEFAULT_SIZE;
		try {
			size = Integer.parseInt(args[0]);
		} catch (Exception exception) {
		}
		if (size < 0)
			return DEFAULT_SIZE;
		return size;
	}

	public GCing(int size) {
		bytes = new byte[size];
	}

	public byte[] getBytes() {
		return bytes;
	}
}