Java
Learn Java from zero, with no programming background needed. Write your first program, then build up through variables, decisions, loops, arrays and real classes, one small runnable example at a time.
Every lesson runs real code in your browser, checked the moment you submit. No installing anything, no setup, no waiting.
Start Java freeWhat this course covers
- What Is Java?
- How Java Actually Runs
- Your First Java Program
- Variables and Types
- Why Java Is Strict About Types
- Joining Text and Numbers
- Doing Arithmetic
- Working With Text
- Making Decisions
- Combining Conditions
- Choosing With switch
- Repeating With a for Loop
- Looping With while
- break and continue
- Arrays: Many Values, One Name
- Looping Through an Array
- Methods: Naming a Job
- Same Name, Different Inputs
- Classes and Objects
- Constructors: Setting Up an Object
- Keeping Data Safe
- Inheritance: Building on What Exists
- One Name, Many Behaviours
- Lists and Maps That Grow
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