import java.util.*;

public class Example {

    // private static int LOOP_COUNT = Integer.MAX_VALUE;
    private static int LOOP_COUNT = 100;

    private static int DEFAULT_LIST_SIZE = 300; // default value (300 = 300MB)

    public static void main(String... args) {
        Example example = new Example();

        int listSize = DEFAULT_LIST_SIZE;
        if (args.length > 0) {
            listSize = Integer.parseInt(args[0]);
        }

        for (int i = 0; i < LOOP_COUNT; i++) {
            example.test(listSize);
            try {
                // Thread.sleep(100L);
                Thread.sleep(500L);
                // Thread.sleep(1000L);
            } catch (Exception ignore) {}
        }
    }

    // specify enough size to listSize (depending on your heap setting),
    // so the ArrayList can be promoted to old gen and can trigger full GC.
    private void test(int listSize) {
        List list = new ArrayList();
        for (int i = 0; i < listSize; i++) {
            list.add(new byte[1024 * 1024]); // add 1MB byte array to ArrayList
        }
        // clear ArrayList at the end, so it can be GCed at full GC cycle
        list = new ArrayList();
    }
}