Learn Java from Scratch - A Beginner's Guide - Step 04 - String Class - Exercise Solution and Some More Important Method

This video tutorial covers advanced methods of the String class in Java. It begins with a recap of a previous exercise, demonstrating how to print each character of a string on separate lines using a loop. The tutorial then explores various methods to find the index of characters or substrings, such as indexOf and lastIndexOf. It also discusses methods to check if a string contains a specific substring, starts or ends with a particular sequence, and compares strings using equals and equalsIgnoreCase. The video concludes with a summary and a preview of the next topic, which will focus on modifying string values.

What method can be used to find the length of a string?

• string.size()

• string.length()

• string.count()

• string.measure()

Which method returns the index of the first occurrence of a substring?

• findIndex()

• locate()

• search()

• indexOf()

How can you find the index of the last occurrence of a character in a string?

• reverseIndex()

• finalIndex()

• lastIndexOf()

• endIndex()

Which method checks if a string contains a specific substring?

• hasSubstring()

• contains()

• finds()

• includes()

What method would you use to verify if a string starts with a specific sequence?

• beginsWith()

• startsWith()

• initiatesWith()

• opensWith()

How can you check if a string is empty?

• isVoid()

• isBlank()

• isEmpty()

• isNull()

Which method allows you to compare two strings without considering case sensitivity?

• equalsCaseInsensitive()

• matchIgnoreCase()

• compareToIgnoreCase()

• equalsIgnoreCase()