@Test public void testIsNullOrEmptyTrue() { Assert.assertTrue(StringUtil.isNullOrEmpty(null)); Assert.assertTrue(StringUtil.isNullOrEmpty(" ")); }
public static boolean isNullOrEmpty(String str) { return null == str || str.trim().isEmpty(); }
StringUtil { public static boolean isNullOrEmpty(String str) { return null == str || str.trim().isEmpty(); } }
StringUtil { public static boolean isNullOrEmpty(String str) { return null == str || str.trim().isEmpty(); } private  StringUtil(); }
StringUtil { public static boolean isNullOrEmpty(String str) { return null == str || str.trim().isEmpty(); } private  StringUtil(); static boolean isNullOrEmpty(String str); static boolean isInteger(String str); static boolean isDouble(String str); static String upFirstChar(String Str); static String lowerFirstChar(String s); }
StringUtil { public static boolean isNullOrEmpty(String str) { return null == str || str.trim().isEmpty(); } private  StringUtil(); static boolean isNullOrEmpty(String str); static boolean isInteger(String str); static boolean isDouble(String str); static String upFirstChar(String Str); static String lowerFirstChar(String s);  }