BootSelf
Check my readiness
java

Types and variables

2 roles need it, 2 as coreUsually level 3: WorkingLesson available

Where it sits

Learn first

Nothing: a good place to start.

This skill

Types and variables

Leads to

Primitive and reference typesData types and their sizesData types and variables

Jobs that need it

What level 3 (Working) means

Uses it independently on the job. Level 4 (Strong): handles hard cases, reviews others.

Start learning

Types and variables

Data types and variables

about 11 min13 parts

Open the lesson

Find out where you stand

A free check, then a route that starts at your level.

Check my readiness

Learned alongside it

Access modifiersArithmetic operationsArrayArray vs ArrayListArraysBasic SyntaxBasics of OOPBuild tools

Types and variables: common questions

What is Types and variables?

Types and variables is a skill in java, needed by 2 roles on BootSelf.

Which jobs need Types and variables?

Backend Developer (Java, Spring Boot), Full Stack Developer (Java + React). Most ask for level 3 (Working): uses it independently on the job.

What should I learn before Types and variables?

Nothing in particular: it's a good place to start.

How long does it take to learn Types and variables?

The starting lesson, Types and variables, takes about 11 minutes. Reaching the level a job asks for takes practice on top: BootSelf measures where you are and plans the rest.

How do I practise Types and variables?

Check your readiness for free, then BootSelf builds a route and short daily learning loops: a little theory, checks on what you get wrong, then a small program.