StringUtil { public static String noBlank(String str, String dft) { return StringUtils.isBlank(str) ? dft : str; } private  StringUtil(); static String[] filterSystemArgs(String[] args); static String trimSuffix(String str, String suffix); static String join(Iterable<String> parts, String separator); static void toUpperCaseArray(String[] source, String[] target); static String noBlank(String str, String dft); static String dropSuffix(String str, String suffix); static String min(Collection<String> strs); static String max(Collection<String> strs); static String min(String s1, String s2); static String max(String s1, String s2); static String[] subArray(String[] array, int start, int endExclusive); static void appendWithSeparator(StringBuilder src, String append); static String[] splitAndTrim(String str, String splitBy); static String[] split(String str, String splitBy); static String[] splitByComma(String str); static int utf8Length(CharSequence sequence); static boolean equals(String a, String b);  }
@Test public void testNoBlankWithNull() { assertEquals("%W=U~)O|0'#?,zA", StringUtil.noBlank(null, "%W=U~)O|0'#?,zA")); }
@Test public void testNoBlankWithNonEmptyString() { assertEquals("N(sg", StringUtil.noBlank("N(sg", "H=!Cp(Ed5gral0qzo")); }