WebTo check if an ArrayList is empty, you can use ArrayList.isEmpty () method or first check if the ArrayList is null, and if not null, check its size using ArrayList.size () method. The … WebOct 10, 2024 · A Computer Science portal for geeks. It contains well written, well thought and well explained computer science and programming articles, quizzes and practice/competitive programming/company interview Questions.
Collection isEmpty() method in Java with Examples
WebExplanation: We have not inserted anything in our ArrayList. So the size of the list is zero. Thus we are getting “Its Empty” in the output console box. Here we are comparing our … WebA list is empty if and only if it contains no elements. 1. Using isNullOrEmpty () function. From Kotlin 1.3 onwards, the recommended approach is to use the isNullOrEmpty () function to check for an empty or null list in Kotlin. 2. Using orEmpty () with isEmpty () function. Here, the idea is to return an empty list if the given list is null and ... twin stars sanrio wallpaper
Java ArrayList - Check if list is empty - Stack Overflow
WebAug 23, 2024 · ArrayList isEmpty() in Java with example; ArrayList and LinkedList remove() methods in Java with Examples; ... The isEmpty() method of List interface in java is used to check if a list is empty or not. It returns true if the list contains no elements otherwise it returns false if the list contains any element. Syntax: WebIn this short article, we will discuss how to check if the collection is empty or null in Java. Let's create a standard utility method to check if the collection is empty or null in Java. Learn Java collections framework in-depth at Java Collections Framework in Depth WebDec 14, 2024 · Using clear () method. Using removeAll () method. Method 1: Using clear () method as the clear () method of ArrayList in Java is used to remove all the elements from an ArrayList. The ArrayList will be completely empty after this call returns. twin stars names