Collection is one of the most important topics for Java programming. Without the proper knowledge of every collection type in Java, it becomes difficult for you to decide which option to pick in a particular scenario.

This course will give you a great understanding of all collection types available in the Collections Framework like lists, linked lists, sets, and hashmaps. 

After completing this course, you will know how data can be modified within a collection, how to sort a collection, and how it can be made thread-safe. You will also cover the internal working of each Java collection so you can work with them more efficiently.

Collections in Java

If we need to create copies of our array, then we can use the `copyOf()` method from the `Arrays` class. We need to provide the array that needs to be copied and the new array's size as a parameter.

The below example shows how to create a copy of an array where the copied array size is the same as the original array. If the new array's size is greater than the original array, then the remaining positions are filled with zeros.

Let's discuss how we can create a copy of an array using the copyOf() method.

Let's Begin

Lists in Java

LinkedList in Java

CopyOnWriteArrayList in Java

Sets in Java

TreeSet in Java

HashMap In Java

TreeMap in Java

LinkedHashMap in Java

Additional Map Implementations

Arrays Class

Collections Class

Copying an Array