Java Programming for Complete Beginners - Java 16 - Step 06 - String Concatenation and Join, Replace Methods

What is the result of the expression '1 + 2 + "3"' in Java?

• 6

• 33

• 123

• 15

How does Java evaluate expressions involving both integers and strings?

• Based on operator precedence

• Left to right

• Randomly

• Right to left

What will be the output of 'System.out.println("Value is " + 20 + 20);'?

• Value is 40

• Value is 2020

• Value is 202

• Value is 20

Which method would you use to join multiple strings with a delimiter?

• replace

• concat

• join

• split

What does the replace method do in the String class?

• Splits a string into parts

• Replaces characters or substrings

• Removes a character

• Adds a string to the end

Why is it important to explore the String API documentation?

• To learn Java syntax

• To understand the possibilities and operations available

• To find errors in Java code

• To memorize all methods

How can you view all available methods for a string variable in Java?

• By using a debugger

• By searching online

• By typing the variable name followed by a dot

• By using the 'help' command