so you can do something like (str != null && !str.isBlank()), Thanks - Shivang Agarwal We don't say "somestring".IsNullOrEmpty, we use String.IsNullOrEmpty(someString) Seems counter-intuitive. If we look inside the isEmpty () method, it also check the size of arraylist to determine if the list is empty or not. Java: check for null or allow exception handling - Stack Overflow Java Program to Check If a String is Empty or Null java check if int value is null or empty Code Example A list is empty if and only if it contains no elements. Check if a String is empty or null in Java | Techie Delight How to check whether the byte[] is empty check if optional is empty java Code Example Using Vanilla Java. A string will be empty if it is assigned "" or String.Empty (A constant for empty strings). how to check if an integer class object is null or empty in java. Finally, we've taken a quick look at using Lodash - a popular convenience utility library to perform the same checks. You can clearly see that there is a string str3 with empty spaces and it returns false because it does not come under the empty check and . Use StringUtils.isEmpty () method of the Apache Commons Lang. How to check if a DateTime field is not null or empty? It . Introduction . You can use the boolean value as a condition for what the statement does next. If you want to check whether the string is empty/null/undefined, use the following code: public class Example{ public static void main . It is not the length of the StringBuilder object, but it is the number of characters its internal buffer can hold before a larger buffer needs to be reallocated. Use an "if" statement to create a condition for the null. the latter considers a String which consists of spaces or special characters eg " " empty too. public static boolean isEmpty(Object object) Checks if an Object is empty or null. Checking for Null or Empty or White Space Only String in Java