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

Which of the following algorithms is used when an array is searched using the Arrays class?

Which of the following algorithms is used when an array is searched using the Arrays class?

What is the time complexity of binary search?

What is the time complexity of binary search?

What will be the output of the following code snippet?

```Java
int[] numbers = {1, 3, 5, 6, 7, 8, 9, 10, 11};
Arrays.binarySearch(numbers, 4);
```

What will be the output of the following code snippet?
<pre><code class="language-Java">int[] numbers = {1, 3, 5, 6, 7, 8, 9, 10, 11};
Arrays.binarySearch(numbers, 4);
</code></pre>

What will be the output of the following code snippet?

```Java
int[] numbers = {1, 5, 4, 6, 7, 8, 9, 10, 11};

Arrays.binarySearch(numbers, 4);

What will be the output of the following code snippet?
<pre><code class="language-Java">int[] numbers = {1, 5, 4, 6, 7, 8, 9, 10, 11};

Arrays.binarySearch(numbers, 4);</code></pre>

When we sort an object array using the `sort()` method of Arrays class, which of the following algorithms is used?

When we sort an object array using the <code>sort()</code> method of Arrays class, which of the following algorithms is used?

Which of the following operations are not supported on a list created using the `asList()` method?

Choose all that apply.

Which of the following operations are not supported on a list created using the <code>asList()</code> method?
Choose all that apply.

If we create the copy of an array using the `copyOf()` method, then any changes in the original array will reflect on the copied array.

If we create the copy of an array using the <code>copyOf()</code> method, then any changes in the original array will reflect on the copied array.

Test your understanding of the basic concepts of the Arrays class


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

Quiz: Arrays