@Test public void testEquals() { Assert.assertTrue(StringUtils.equals(null, null)); Assert.assertFalse(StringUtils.equals(null, "")); Assert.assertFalse(StringUtils.equals("", null)); Assert.assertTrue(StringUtils.equals("", "")); Assert.assertFalse(StringUtils.equals("1", "2")); Assert.assertTrue(StringUtils.equals("1", "1")); }
public static boolean equals(CharSequence s1, CharSequence s2) { return s1 == null ? s2 == null : s1.equals(s2); }
StringUtils { public static boolean equals(CharSequence s1, CharSequence s2) { return s1 == null ? s2 == null : s1.equals(s2); } }
StringUtils { public static boolean equals(CharSequence s1, CharSequence s2) { return s1 == null ? s2 == null : s1.equals(s2); }  }
StringUtils { public static boolean equals(CharSequence s1, CharSequence s2) { return s1 == null ? s2 == null : s1.equals(s2); }  static boolean isEmpty(CharSequence cs); static boolean isNotEmpty(CharSequence cs); static boolean isBlank(CharSequence cs); static boolean isNotBlank(CharSequence cs); static String trim(String str); static String trimToNull(String str); static String trimToEmpty(String str); static String toString(byte[] bytes, String charsetName); static String defaultString(final Object str); static String toString(Object o, String defaultVal); static String toString(Object o); static String objectsToString(Object[] args); static boolean equals(CharSequence s1, CharSequence s2); static String[] split(String src, String separator); static String[] splitWithCommaOrSemicolon(String src); static String join(String[] strings, String separator); static String joinWithComma(String... strings); static String substringAfter(String str, String separator); static String substringBefore(String str, String separator); }
StringUtils { public static boolean equals(CharSequence s1, CharSequence s2) { return s1 == null ? s2 == null : s1.equals(s2); }  static boolean isEmpty(CharSequence cs); static boolean isNotEmpty(CharSequence cs); static boolean isBlank(CharSequence cs); static boolean isNotBlank(CharSequence cs); static String trim(String str); static String trimToNull(String str); static String trimToEmpty(String str); static String toString(byte[] bytes, String charsetName); static String defaultString(final Object str); static String toString(Object o, String defaultVal); static String toString(Object o); static String objectsToString(Object[] args); static boolean equals(CharSequence s1, CharSequence s2); static String[] split(String src, String separator); static String[] splitWithCommaOrSemicolon(String src); static String join(String[] strings, String separator); static String joinWithComma(String... strings); static String substringAfter(String str, String separator); static String substringBefore(String str, String separator); static final String EMPTY; static final String CONTEXT_SEP; static final String ALL; static final String DEFAULT; static final String TRUE; static final String FALSE; static final String NULL; static final String[] EMPTY_STRING_ARRAY; }