Nuances of variable scope in for-loops

Java’s mechanisms and syntax for defining classes inside other classes

The subtleties of string concatenation

The scope rules of Java variables and an examination of shadowing

Incremental changes bring future benefits in this release.

Java 13 delivers long-awaited multiline strings.

How Java is moving toward pattern matching, improved enums, and better switch statements

The subtleties of using a constructor to create an array

When exactly do you need to declare an exception?

For happy users, specify the locale correctly.

The subtleties of boxing and unboxing in streams

Understanding multiple inheritance in Java

A new preview feature makes switch statements friendlier and less error-prone.

Try more intermediate and advanced test questions.

More intermediate and advanced test questions