@Test public void testStringJoin() { assertNotEquals(null, StringUtils.join("")); assertNotEquals(null, StringUtils.join(STRINGS)); }
public static <T> String join(final String... elements) { return join(elements, ""); }
StringUtils { public static <T> String join(final String... elements) { return join(elements, ""); } }
StringUtils { public static <T> String join(final String... elements) { return join(elements, ""); }  }
StringUtils { public static <T> String join(final String... elements) { return join(elements, ""); }  static String join(final String... elements); static String joinUsingDelim(String delim, final String... elements); static String join(final String[] array, final String separator); static String toHexString(byte[] bytes); static boolean isNullOrEmpty(String str); static String nullToEmpty(@Nullable String string); static String objToString(@Nullable Object obj); static @Nullable String emptyToNull(@Nullable String string); }
StringUtils { public static <T> String join(final String... elements) { return join(elements, ""); }  static String join(final String... elements); static String joinUsingDelim(String delim, final String... elements); static String join(final String[] array, final String separator); static String toHexString(byte[] bytes); static boolean isNullOrEmpty(String str); static String nullToEmpty(@Nullable String string); static String objToString(@Nullable Object obj); static @Nullable String emptyToNull(@Nullable String string);  }