@Test
public void testNotValidateString(){

	String regExStr = "^[\\w]([\\-\\.\\w])+[\\w]+[\\w]*\\.([\\w]+[\\w\\-]+[\\w]*(\\.[a-z][a-z|0-9]*)?)$";
	String str="test.test@gmail.com";
	boolean value = stringUtil.validateString(regExStr, str);
	Assert.assertFalse(value);
}