Learn Java from Scratch - A Beginner's Guide - Step 10 - Java Arrays - Using Person Objects and String Elements with Exe

This video tutorial delves into arrays of custom types, building on previous lessons. It explains how to create arrays of objects, specifically focusing on a 'Person' type, and demonstrates how to assign values to these arrays. The tutorial also covers string arrays, highlighting the differences in their creation compared to other types. The video concludes with an exercise to create a string array of the days of the week, find the longest day name, and print the days in reverse order.

What is the default value of an uninitialized element in an array of custom objects in Java?

• 0

• null

• undefined

• empty string

Which of the following is a correct way to initialize an array of custom objects using a shortcut method?

• Person[] persons = {new Person(), new Person()};

• Person[] persons = new Person[];

• Person[] persons = new Person(5);

• Person[] persons = new Person[5];

How can you create a string array in Java without using the 'new' keyword?

• String[] days = new String(2);

• String[] days = String[] {"Monday", "Tuesday"};

• String[] days = new String[] {"Monday", "Tuesday"};

• String[] days = {"Monday", "Tuesday"};

What is the task given in the exercise related to string arrays?

• Create a string array of colors and print them.

• Create a string array of the days of the week and find the longest day name.

• Create a string array of numbers and sort them.

• Create a string array of fruits and count them.

In the exercise, how are the days of the week supposed to be printed?

• In order of length

• In random order

• In reverse order

• In alphabetical order