How to check if a string is empty in Java
In this post we will give you information about How to check if a string is empty in Java. Hear we will give you detail about How to check if a string is empty in JavaAnd how to use it also give you demo for it if it is necessary.
we are going to learn about how to check if a string is empty or not in Java.
Checking the empty string
To check if a given string is empty or not, we can use the built-in String.isEmpty() method in Java.
The String.isEmpty() method returns true if a given string is empty string (“”), otherwise it returns false if a string is not empty.
Here is an example:
public class Main{ public static void main(String[] args) { String str = ""; if(str.isEmpty()){ System.out.println("str is empty"); }else{ System.out.println("str is not empty"); } }}Output:
"str is empty"
Similarly, we can also use the length() method to check if a string is empty or not in Java.
public class Main{ public static void main(String[] args) { String str = ""; int n = str.length(); if (n == 0) { System.out.println("str is empty"); }else{ System.out.println("str is not empty"); } }}Note: The length() method returns the total number of characters in a specified string, it returns 0 for the empty string.
Hope this code and post will helped you for implement How to check if a string is empty in Java. if you need any help or any feedback give it in comment section or you have good idea about this post you can give it comment section. Your comment will help us for help you more and improve us. we will give you this type of more interesting post in featured also so, For more interesting post and code Keep reading our blogs