Core Java Interview Questions and Answers [1/5]

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Interview Guide starts from the section titled "Java Review (Interview) Guide - Getting Started"

Why are Wrapper Classes Needed?
Best Practices in Using Wrapper Classes
How does Java optimize memory usage with Integer.valueOf()?
Why Are Wrapper Classes in Java Immutable?
String vs StringBuffer vs StringBuilder
Why Are String Classes in Java Immutable?
How do Text Blocks Help?
What is a String Pool?
How Does intern() Work?
What are the things to be careful about when comparing Strings?
What Are the Best Practices with Conditionals?
What Are the Best Practices with Loops?
What Are the Best Practices with Using Arrays?
How does Local Variable Type Inference Help? (Java 10)
How do Records improve the conciseness of Java code?
What are the best practices with Records?
What are the things that you should be careful about when using Records?