Your First Class
Beginner
About Java →
Blueprints, objects, fields, methods and constructors. 7 quick lessons that build on Intro to Java.
0 / 7 lessons complete
Start Lesson 1
Open the Java sandbox ↗
1
What Is a Class?
Write a blueprint and build an object from it.
2
Two Dogs
Build two objects from one blueprint.
3
More Fields
Give the blueprint several fields.
4
Methods
Teach the blueprint a trick.
5
Constructors
Fill in the fields at the moment an object is built.
6
Putting It Together
A constructor, two fields and a method: a real class.
7
The Secret of main
The reveal: your whole program was inside a class all along.