org.apache.commons.lang3.StringUtils类的2个方法区别

查看源码

  1. //isEmpty
  2. public static boolean isEmpty(final CharSequence cs) {
  3.         return cs == null || cs.length() == 0;
  4.      }
  7. //isBlank
  8. public static boolean isBlank(final CharSequence cs) {
  9.         int strLen;
  10.         if (cs == null || (strLen = cs.length()) == 0) {
  11.              return true;
  12.          }
  13.         for (int i = 0; i < strLen; i++) {
  14.              if (Character.isWhitespace(cs.charAt(i)) == false) {
  15.                  return false;
  16.              }
  17.          }
  18.          return true;
  19.     }

通过源码分析,isnotempty不能判断空白字符串

总结

一般使用isBlank