Java

Java is a very widely used Object Oriented programming language. It's safe, simple to use and portable so that you can "write once, run anywhere".

Master Java with
Interactive Learning

Elevate your Java skills through 168 curated exercises across 23 core concepts. Master problem-solving with a structured learning path designed for modern developers.

About Java

Java is among the most popular available programming languages, thanks to its versatility and compatibility. It is widely used for software development, mobile applications and developing larger systems.

Java was born in 1995 and is maintained by Oracle. Despite the fact that it isn't as young as some of the fresh languages out there, Java is still really popular. It was designed to be fast, secure, reliable, beginner-friendly and highly portable. This portability perk exists because Java is executed on a cross-platform compatible Java Virtual Machine - JVM. Android apps are also developed using Java, since the Android Operating System runs on a Java language environment.

The Java community is huge! GitHub for example has over 1.5 million Java projects. It's also worth mentioning that Java has the second largest community in StackOverflow! This is important because the larger a programming language community is, the more support you'd be likely to get.

Java also has a powerful and well-designed set of built-in APIs - Application Programming Interfaces, which can be used for various activities like Database connection, networking, I/O, XML parsing, utilities, and much more.

From laptops to data centers, game consoles to scientific supercomputers, cell phones to the Internet, Java is everywhere!

Key Features of Java

Modern

Java is a modern, fast-evolving language with releases every 6 months.

Statically-typed

Every expression has a type known at compile time.

Multi-paradigm

Java is primarily an object-oriented language, but has many functional features introduced in v1.8.

General purpose

Java is used for a variety of workloads like web, cloud, mobile and game applications.

Portable

Java was designed to be cross-platform with the slogan "Write once, run anywhere".

Garbage Collection

Java programs perform automatic memory management for their lifecycles.

Modern

Java is a modern, fast-evolving language with releases every 6 months.

Statically-typed

Every expression has a type known at compile time.

Multi-paradigm

Java is primarily an object-oriented language, but has many functional features introduced in v1.8.

General purpose

Java is used for a variety of workloads like web, cloud, mobile and game applications.

Portable

Java was designed to be cross-platform with the slogan "Write once, run anywhere".

Garbage Collection

Java programs perform automatic memory management for their lifecycles.

A taste of Java concepts you'll cover

Basics

Booleans

Strings

If-Else Statements

Numbers

Arrays

For Loops

For-Each Loops

Nullability

Ternary Operators

Classes

Date-Time

Bit Manipulation

Lists

Generic Types

Chars

Inheritance

Randomness

Constructors

Switch Statements

Sets

Maps

Exceptions

Interfaces

Enums

Method Overloading

Dive into Java practice challenges

Accumulate

Level 1

Implement the `accumulate` operation, which, given a collection and an operation to perform on each element of the collection, returns a new collection containing the result of applying that operation to each element of the input collection.

Binary

Level 1

Convert a binary number, represented as a string (e.g. '101010'), to its decimal equivalent using first principles

Hello World

Level 1

SlaveCode's classic introductory exercise. Just say "Hello, World!".

Hexadecimal

Level 1

Convert a hexadecimal number, represented as a string (e.g. "10af8c"), to its decimal equivalent using first principles (i.e. no, you may not use built-in or external libraries to accomplish the conversion).

Leap

Level 1

Determine whether a given year is a leap year.

Octal

Level 1

Convert a octal number, represented as a string (e.g. '1735263'), to its decimal equivalent using first principles (i.e. no, you may not use built-in or external libraries to accomplish the conversion).

‌
‌

‌
‌
‌

‌
‌
‌
‌
‌
‌
‌
‌
‌

‌

Java

Java is a very widely used Object Oriented programming language. It's safe, simple to use and portable so that you can "write once, run anywhere".

Master Java with
Interactive Learning

Elevate your Java skills through 168 curated exercises across 23 core concepts. Master problem-solving with a structured learning path designed for modern developers.

About Java

From laptops to data centers, game consoles to scientific supercomputers, cell phones to the Internet, Java is everywhere!

Key Features of Java

Modern

Java is a modern, fast-evolving language with releases every 6 months.

Statically-typed

Every expression has a type known at compile time.

Multi-paradigm

Java is primarily an object-oriented language, but has many functional features introduced in v1.8.

General purpose

Java is used for a variety of workloads like web, cloud, mobile and game applications.

Portable

Java was designed to be cross-platform with the slogan "Write once, run anywhere".

Garbage Collection

Java programs perform automatic memory management for their lifecycles.

Modern

Java is a modern, fast-evolving language with releases every 6 months.

Statically-typed

Every expression has a type known at compile time.

Multi-paradigm

Java is primarily an object-oriented language, but has many functional features introduced in v1.8.

General purpose

Java is used for a variety of workloads like web, cloud, mobile and game applications.

Portable

Java was designed to be cross-platform with the slogan "Write once, run anywhere".

Garbage Collection

Java programs perform automatic memory management for their lifecycles.