StringUtils.isEmpty

• StringUtils.isEmpty("variable") function is used to check whether the string length is 0 or null.
• This function is null safe.
• You can use this method with the help of commons-lang-2.6.jar.
• You can download this jar by using the below link

             http://mvnrepository.com/artifact/commons-lang/commons-lang/2.6

1.  package com.utilitySample;
2.  import org.apache.commons.lang.StringUtils;
3. 
   
4.  public class StringUtility {
5. public static void main(String[] args) {
6.                  System.out.println(StringUtils.isEmpty(null));
7. System.out.println(StringUtils.isEmpty(""));
8. System.out.println(StringUtils.isEmpty(" "));  
9. System.out.println(StringUtils.isEmpty("vel"));
10. System.out.println(StringUtils.isEmpty("  vel "));
11.    }
12.  }

Output :

 true
 true
 false
 false
 false