Learn Java from Scratch - A Beginner's Guide - Step 03 - List Interface - Immutability and Introduction of Implementatio

The video tutorial explores the concept of immutability, explaining that certain classes like String and BigDecimal are immutable, meaning their values cannot be changed once created. It contrasts this with mutable lists, which can be modified, and demonstrates how to create mutable lists using ArrayList, LinkedList, and Vector. The video also covers basic operations on these lists, such as adding elements, and concludes with a prompt for viewers to experiment with these concepts further.

What does it mean for a class to be immutable?

• Its instances cannot be modified after creation.

• Its instances can be modified after creation.

• It can only be used with primitive data types.

• It is a type of mutable list.

Which of the following is NOT a way to create a mutable list?

• ArrayList

• LinkedList

• ImmutableList

• Vector

How can you add an element to an ArrayList?

• Using the 'push' method

• Using the 'append' method

• Using the 'insert' method

• Using the 'add' method

What is a key feature of a Vector in Java?

• It is synchronized.

• It does not allow null values.

• It is immutable.

• It is faster than ArrayList.

Which list type is generally preferred for frequent insertions and deletions?

• ArrayList

• LinkedList

• Vector

• ImmutableList