Check if string is empty in java

By | April 19, 2020

We can check if string is empty, blank or null using below methods.

1 StringUtils

2. String.length() method

3. isEmpty() method

 

1. StringUtils:

Apache string utility is giving isBlank() method. It is used as below.

 

2. String.length():

When a string length is equals to ‘0’ then it is an empty string.

Output:

str is empty

 

3. isEmpty method:

This method is present in the String class. It returns true if, and only if, length() is 0.

Output:

true

Tags: check if string is empty, check empty string in java

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