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. If element exist then method returns true , else false . 0. 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 … How to check a list result as a HashMap value for a given String. 0. To check if ArrayList contains a specific object or element, use ArrayList.contains() method. 0. List Data ContainsAll Exactly Data In Other List. 12. indexOf is another useful method for finding elements:. 1. Check if list contains element that contains a string and get that element. So logically, if this method returns anything other than -1, we know that the list contains the element: Since, Java … 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. The java.util.ArrayList.contains(Object) method returns true if this list contains the specified element. Which is the fastest way for a containsAny check? You can call contains() method on the ArrayList, with the element passed as argument to the method. Programming Languages: [Java, JavaScript, Python] Is Java present in the arraylist: true Is C++ present in the arraylist: false. The containsAll() method of List interface returns a Boolean value 'true' if this list contains all the elements of the invoked collection. The method addSorted is a little weird. Otherwise asking the container for its size could take relatively long if it contains lots of elements. 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 Methods – Sort List, Contains, List Add, List Remove. Last Updated: January 18, 2021. Java List containsAll() Method. 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. How to use assertNotEquals for 2 lists of different size. contains() method returns true if the object is present in the list, else the method returns false. Declaration Following is the declaration for java.util.ArrayList.contains() method In the tutorial, we will show how to find an element in a List Object with Java APIs and Google Guava library. 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.. 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