A list contains at least one value from another list (Java 8) 2. java how to check if a list is in another list. int indexOf(Object element) This method returns the index of the first occurrence of the specified element in the given list, or -1 if the list doesn't contain the element.. contains() method returns true if the object is present in the list, else the method returns false. List Data ContainsAll Exactly Data In Other List. 0. 0. You can call contains() method on the ArrayList, with the element passed as argument to the method. 0. indexOf is another useful method for finding elements:. Java ArrayList contains() – Check if element exists ArrayList contains() method is used to check if the specified element exists in the given arraylist or not. This Tutorial Explains Various Java List Methods such as Sort List, List Contains, List Add, List Remove, List Size, AddAll, RemoveAll, Reverse List & More: We have already discussed the list interface in general in our previous tutorial. Check if ArrayList contains a Specific Object. The containsAll() method of List interface returns a Boolean value 'true' if this list contains all the elements of the invoked collection. In the above example, we have used the contains() method to check if elements Java and C++ are present in the arraylist languages. How to check a list result as a HashMap value for a given String. Otherwise asking the container for its size could take relatively long if it contains lots of elements. 0. The methods it defines are different from the existing Java List interface, but maybe you can derive your List from the Java version with a new name and extend it with additional methods. Contentscontains()Example with Custom ObjectindexOf()Looping to Find Element in Java ListUse Stream Filter of Java 8Use Google GuavaConclusion contains() Signature method: [crayon-6004fe3c73342547027943/] -> Returns true if the list contains at least one element e … To check if ArrayList contains a specific object or element, use ArrayList.contains() method. The method addSorted is a little weird. Programming Languages: [Java, JavaScript, Python] Is Java present in the arraylist: true Is C++ present in the arraylist: false. Efficient search for not empty intersection (Java) 3. Check if list contains element that contains a string and get that element. Last Updated: January 18, 2021. Which is the fastest way for a containsAny check? List to Stream From Java 8, you can convert a List to a stream to take advantages of the Streams API: List.stream(): returns a sequential stream. Java List containsAll() Method. 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