@Test public void isBlank() { assertTrue(StringUtil.isBlank(null)); assertTrue(StringUtil.isBlank("")); assertTrue(StringUtil.isBlank(" ")); assertTrue(StringUtil.isBlank(" \r\n ")); assertFalse(StringUtil.isBlank("hello")); assertFalse(StringUtil.isBlank(" hello ")); }
public static boolean isBlank(String string) { if (string == null || string.length() == 0) return true; int l = string.length(); for (int i = 0; i < l; i++) { if (!StringUtil.isWhitespace(string.codePointAt(i))) return false; } return true; }
StringUtil { public static boolean isBlank(String string) { if (string == null || string.length() == 0) return true; int l = string.length(); for (int i = 0; i < l; i++) { if (!StringUtil.isWhitespace(string.codePointAt(i))) return false; } return true; } }
StringUtil { public static boolean isBlank(String string) { if (string == null || string.length() == 0) return true; int l = string.length(); for (int i = 0; i < l; i++) { if (!StringUtil.isWhitespace(string.codePointAt(i))) return false; } return true; }  }
StringUtil { public static boolean isBlank(String string) { if (string == null || string.length() == 0) return true; int l = string.length(); for (int i = 0; i < l; i++) { if (!StringUtil.isWhitespace(string.codePointAt(i))) return false; } return true; }  static String join(Collection strings, String sep); static String join(Iterator strings, String sep); static String padding(int width); static boolean isBlank(String string); static boolean isNumeric(String string); static boolean isWhitespace(int c); static boolean isActuallyWhitespace(int c); static String normaliseWhitespace(String string); static void appendNormalisedWhitespace(StringBuilder accum, String string, boolean stripLeading); static boolean in(String needle, String... haystack); static boolean inSorted(String needle, String[] haystack); static URL resolve(URL base, String relUrl); static String resolve(final String baseUrl, final String relUrl); static StringBuilder stringBuilder(); }
StringUtil { public static boolean isBlank(String string) { if (string == null || string.length() == 0) return true; int l = string.length(); for (int i = 0; i < l; i++) { if (!StringUtil.isWhitespace(string.codePointAt(i))) return false; } return true; }  static String join(Collection strings, String sep); static String join(Iterator strings, String sep); static String padding(int width); static boolean isBlank(String string); static boolean isNumeric(String string); static boolean isWhitespace(int c); static boolean isActuallyWhitespace(int c); static String normaliseWhitespace(String string); static void appendNormalisedWhitespace(StringBuilder accum, String string, boolean stripLeading); static boolean in(String needle, String... haystack); static boolean inSorted(String needle, String[] haystack); static URL resolve(URL base, String relUrl); static String resolve(final String baseUrl, final String relUrl); static StringBuilder stringBuilder();  }