BootSelf
Check my readiness
kotlin

Object declarations

1 role need it, 1 as coreUsually level 3: WorkingLesson available

Where it sits

Learn first

SingletonNested and inner classesMember functions

This skill

Object declarations

Leads to

The roles below put it to work directly.

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

Object declarations

Special constructions / Special classes

about 15 min5 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

Abstract classesAdditional librariesAggregate operations on collectionsAggregate operations on collections: part 2AndroidAndroid CoreAndroid JetpackAndroid studio basics

Object declarations: common questions

What is Object declarations?

Object declarations is a skill in kotlin, needed by 1 role on BootSelf.

Which jobs need Object declarations?

Android Developer. Most ask for level 3 (Working): uses it independently on the job.

What should I learn before Object declarations?

Singleton, Nested and inner classes, Member functions.

How long does it take to learn Object declarations?

The starting lesson, Object declarations, takes about 15 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 Object declarations?

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.