JavaGoal

addAll(int index, Collection c): This addall method in Java utilizes to appends all the elements of the specified collection at the specified position in ArrayList. Its return type is boolean. So, It inserts all the elements in the specified collection into this list, starting at the specified position, and Shifts the elements present at the … Read more

In this post, we will see how we can add elements in the ArrayList in java. There are two methods arraylist add() and ArrayList addAll() but both are overloaded. So let’s see in java add to list different elements and collections. 1. add(E e)2. add(int index, E e)3. add(Collection c)4. add(int index, Collection c) Java … Read more

ArrayList(): It is a default constructor of ArrayList java class. It is used to create an empty ArrayList. It’s initial default capacity 10.   Where, E represents the type of elements in ArrayList. Let say you want to create an ArrayList java and add some names in ArrayList. In other means, java array to list javascript. … Read more

ArrayList in java is one of the most important parts of the Collection framework. It is the collection that is widely used in programs. Before moving further we will recommend you please read Array in java, because that will help you to understand the concept of ArrayList. In this post, we will discuss what is … Read more

removeAll() method: This removeAll Java method uses to remove all elements of a collection from another collection. Where, c is the collection which you want to remove from this collection. return type:  Its return type is boolean. It can return either true or false. How the removeAll() method can work: It removes all elements of … Read more

addAll() method: This java addall list method employs to add all elements of a collection to another collection. Where, c is the collection which you want to add in this collection.return type:  Its return type is boolean. It can return either true or false. How addAll() method can work: We have different types of collections … Read more

containsAll() method: This containsall in java method utilizes to check the “all elements of given collection are present in another collection or not. It returns only boolean value. If the given collection exists in collection, then it returns true otherwise false. Where, c is the collection which you want to check in this collection.return type:  … Read more

contains() method: This contain method is used to check the given element is present in the collection or not. It returns only boolean value. If the given element exists in collection, then it returns true otherwise false. Where Object in java represents the type of contains javascript class in the collection.obj is the element that … Read more

remove() method: This method is used to remove the given element in collection. Where, Object in java represents the type of class in the collection.obj is the element that you want to remove from the collection.return type:  Its return type is boolean. It can return either true or false. How remove() method can work: It … Read more

add() method: This add method in java utilizes to add the given element in collection. Where, E represents the type of elements in collection.e is the element which you want to add in this collection.return type:  Its return type is boolean. It can return either true or false. How add() method can work: We have … Read more