gistfile1.txt

@Test
    public void test_int_to_long_stuff() {
        int x = 10;
        int y = 20;

        ByteBuffer buffer = ByteBuffer.allocate(8);
        buffer.putInt(x).putInt(y);
        Assert.assertFalse(buffer.hasRemaining()); // confirm I used all 8 bytes

        buffer.position(0);
        Assert.assertTrue(buffer.hasRemaining());

        long xy = buffer.getLong();
        Assert.assertFalse(buffer.hasRemaining()); // again, confirm I used all 8 bytes

        buffer.position(0);
        Assert.assertTrue(buffer.hasRemaining());

        buffer.putLong(xy);
        Assert.assertFalse(buffer.hasRemaining()); // again, confirm I used all 8 bytes...

        buffer.position(0);
        int x2 = buffer.getInt();
        int y2 = buffer.getInt();
        Assert.assertFalse(buffer.hasRemaining());

        Assert.assertEquals(x, x2);
        Assert.assertEquals(y, y2);

    }