Foundation

Java

The JVM, syntax, OOP, collections and generics, exceptions and concurrency.

📄️Introduction to Java

Java is a statically typed, object-oriented language designed to run anywhere through the Java Virtual Machine (JVM): "write once, run anywhere".

break leaves a loop; continue skips to the next iteration.

A class can implement many interfaces but extend only one class.

Generics provide compile-time type safety and remove casts.

An exception is an object that signals an error and unwinds the call stack until it is caught.

Do not create threads by hand in production code; use a pool.