1.isBlank () method
Public static Boolean of isBlank. 1 (String str) {
2 int strLen;
. 3 IF (str == null || (strLen = str.length ()) == 0) {// determines whether str is null or is equal to the length of str 0
return to true. 4;
. 5}
. 6 for (int I = 0; I <strLen; I ++) {
. 7 IF ((Character.isWhitespace (str.charAt (I)) == to false)) {// whitespace Analyzing
8 return to false;
. 9}
10}
. 11 return to true;
12 is}
2.isEmpty () method
Public static Boolean isEmpty. 1 (String str) {
2 str.length return str == null || () == 0; // determines whether it is null or str str length equals zero
3}
It can be seen of isBlank () method and isEmpty () the biggest difference is determined whether or not there is a blank character string in the
public static void main(String[] args) {
System.out.println(StringUtils.isBlank(" ")); //true
System.out.println(StringUtils.isEmpty(" ")); //flase
}