Selenium WebDriver with Java - Basics to Advanced and Frameworks - What are Arrays and their usage in Java Programs?

The video tutorial introduces arrays in Java, explaining their purpose as containers for multiple values of the same data type. It covers defining arrays, allocating memory, initializing with values, and retrieving those values using loops. The tutorial emphasizes understanding the concept of arrays and provides practical examples to illustrate their use.

What is an array in Java?

• A single variable that holds one value

• A method to define a single integer

• A container that stores multiple values of the same data type

• A container that stores multiple values of different data types

How do you declare an array to store 5 integer values?

• int[] a = new int[5];

• int a = 5;

• int a[] = 5;

• int a = new int[5];

What keyword is used to allocate memory for an array in Java?

• new

• allocate

• memory

• create

How do you assign a value to the first index of an array named 'a'?

• a[1] = value;

• a = value[0];

• a = value;

• a[0] = value;

What is the starting index of an array in Java?

• 5

• 10

• 0

• 1

Which method is used to find the length of an array?

• getLength()

• length()

• size()

• arraySize()

What will be the output of the following loop if the array 'a' contains {2, 6, 1, 9, 12}? for (int i = 0; i < a.length; i++) { System.out.println(a[i]); }

• 2 6 1 9 12

• 12 9 1 6 2

• 2 1 6 9 12

• 6 2 9 1 12