Strings { public static boolean equals(@Nullable String text1, @Nullable String text2) { if (text1 == null) return text2 == null; return text1.equals(text2); }  static byte[] bytes(String text); static String format(String pattern, Object... params); static int compare(@Nullable String text1, @Nullable String text2); static boolean isBlank(@Nullable String text); static boolean equals(@Nullable String text1, @Nullable String text2); @Nullable static String truncate(@Nullable String text, int maxLength); @Nullable static String strip(@Nullable String text); static boolean startsWith(String text, char prefix); static String[] split(String text, char delimiter);  }
@Test void stringEquals() { assertThat(Strings.equals(null, null)).isTrue(); assertThat(Strings.equals(null, "")).isFalse(); assertThat(Strings.equals("", null)).isFalse(); assertThat(Strings.equals("", "")).isTrue(); }