public static boolean isIbmJdk() {
        return System.getProperty("java.vendor").contains("IBM");
    }
@Test
    public void testIsIBMJdk() {
        System.setProperty("java.vendor", "Oracle Corporation");
        assertFalse(Java.isIbmJdk());
        System.setProperty("java.vendor", "IBM Corporation");
        assertTrue(Java.isIbmJdk());
    }