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Programming languages · 30 lessons · up to 10 minutes each
Java
A planned Java sequence covering types, object design, generics, streams, and concurrency.
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Java
Permanent access to the lessons published in this track when you buy. Future lessons are not included. 0 of 30 lessons are published; 0 are in owner review and 30 are Coming Soon.
$29.0030 lessons still in progress
Beginner
Lessons 1–10
01 Java: Sketch primitive and reference values
Topic: primitive and reference values
Draw a small map of primitive and reference values in the context of Java language and runtime skills for maintainable applications; save a short example or check that demonstrates the result.
Beginner4 minComing Soon02 Java: Name the parts of expressions and control flow
Topic: expressions and control flow
Label the main pieces in expressions and control flow in the context of Java language and runtime skills for maintainable applications; save a short example or check that demonstrates the result.
Beginner5 minComing Soon03 Java: Trace an example of methods and overloads
Topic: methods and overloads
Follow one input through methods and overloads in the context of Java language and runtime skills for maintainable applications; save a short example or check that demonstrates the result.
Beginner6 minComing Soon04 Java: Compare choices for arrays and collections
Topic: arrays and collections
Write down one practical difference between arrays and collections in the context of Java language and runtime skills for maintainable applications; save a short example or check that demonstrates the result.
Beginner7 minComing Soon05 Java: Find the boundary in classes and constructors
Topic: classes and constructors
Mark where classes and constructors in the context of Java language and runtime skills for maintainable applications; save a short example or check that demonstrates the result.
Beginner8 minComing Soon06 Java: Inspect an example of interfaces and records
Topic: interfaces and records
Annotate a minimal example of interfaces and records in the context of Java language and runtime skills for maintainable applications; save a short example or check that demonstrates the result.
Beginner9 minComing Soon07 Java: Connect generics and wildcards to a neighboring concept
Topic: generics and wildcards
Show how generics and wildcards in the context of Java language and runtime skills for maintainable applications; save a short example or check that demonstrates the result.
Beginner10 minComing Soon08 Java: Spot a failure mode in exceptions and resources
Topic: exceptions and resources
Describe one likely failure for exceptions and resources in the context of Java language and runtime skills for maintainable applications; save a short example or check that demonstrates the result.
Beginner3 minComing Soon09 Java: Read an official example of streams and lambdas
Topic: streams and lambdas
Summarize an official example of streams and lambdas in the context of Java language and runtime skills for maintainable applications; save a short example or check that demonstrates the result.
Beginner5 minComing Soon10 Java: Choose a use case for threads and virtual threads
Topic: threads and virtual threads
Match one small use case to threads and virtual threads in the context of Java language and runtime skills for maintainable applications; save a short example or check that demonstrates the result.
Beginner6 minComing Soon
Intermediate
Lessons 11–20
11 Java: Build an example with primitive and reference values
Topic: primitive and reference values
Create a small working example that uses primitive and reference values in the context of Java language and runtime skills for maintainable applications; save a short example or check that demonstrates the result.
Intermediate4 minComing Soon12 Java: Compose expressions and control flow with another component
Topic: expressions and control flow
Combine expressions and control flow in the context of Java language and runtime skills for maintainable applications; save a short example or check that demonstrates the result.
Intermediate5 minComing Soon13 Java: Configure methods and overloads for a small case
Topic: methods and overloads
Set up methods and overloads in the context of Java language and runtime skills for maintainable applications; save a short example or check that demonstrates the result.
Intermediate6 minComing Soon14 Java: Validate inputs around arrays and collections
Topic: arrays and collections
Add a check around arrays and collections in the context of Java language and runtime skills for maintainable applications; save a short example or check that demonstrates the result.
Intermediate7 minComing Soon15 Java: Use classes and constructors in a short workflow
Topic: classes and constructors
Add classes and constructors in the context of Java language and runtime skills for maintainable applications; save a short example or check that demonstrates the result.
Intermediate8 minComing Soon16 Java: Refactor interfaces and records into a reusable unit
Topic: interfaces and records
Extract interfaces and records in the context of Java language and runtime skills for maintainable applications; save a short example or check that demonstrates the result.
Intermediate9 minComing Soon17 Java: Exercise generics and wildcards with sample data
Topic: generics and wildcards
Run sample data through generics and wildcards in the context of Java language and runtime skills for maintainable applications; save a short example or check that demonstrates the result.
Intermediate10 minComing Soon18 Java: Observe exceptions and resources outputs
Topic: exceptions and resources
Capture the result of exceptions and resources in the context of Java language and runtime skills for maintainable applications; save a short example or check that demonstrates the result.
Intermediate3 minComing Soon19 Java: Recover from a streams and lambdas failure
Topic: streams and lambdas
Handle one expected failure from streams and lambdas in the context of Java language and runtime skills for maintainable applications; save a short example or check that demonstrates the result.
Intermediate5 minComing Soon20 Java: Document threads and virtual threads behavior
Topic: threads and virtual threads
Write a short usage note for threads and virtual threads in the context of Java language and runtime skills for maintainable applications; save a short example or check that demonstrates the result.
Intermediate6 minComing Soon
Advanced
Lessons 21–30
21 Java: Test a boundary around primitive and reference values
Topic: primitive and reference values
Add an edge-case test for primitive and reference values in the context of Java language and runtime skills for maintainable applications; save a short example or check that demonstrates the result.
Advanced4 minComing Soon22 Java: Harden expressions and control flow
Topic: expressions and control flow
Add the relevant access, safety, or validation control to expressions and control flow in the context of Java language and runtime skills for maintainable applications; save a short example or check that demonstrates the result.
Advanced5 minComing Soon23 Java: Measure methods and overloads
Topic: methods and overloads
Record a small baseline for methods and overloads in the context of Java language and runtime skills for maintainable applications; save a short example or check that demonstrates the result.
Advanced6 minComing Soon24 Java: Reduce cost in arrays and collections
Topic: arrays and collections
Change one measurable cost in arrays and collections in the context of Java language and runtime skills for maintainable applications; save a short example or check that demonstrates the result.
Advanced7 minComing Soon25 Java: Diagnose a classes and constructors failure
Topic: classes and constructors
Use an observable signal to explain a failure in classes and constructors in the context of Java language and runtime skills for maintainable applications; save a short example or check that demonstrates the result.
Advanced8 minComing Soon26 Java: Make interfaces and records repeatable
Topic: interfaces and records
Show that rerunning interfaces and records in the context of Java language and runtime skills for maintainable applications; save a short example or check that demonstrates the result.
Advanced9 minComing Soon27 Java: Review trade-offs in generics and wildcards
Topic: generics and wildcards
Compare two documented approaches to generics and wildcards in the context of Java language and runtime skills for maintainable applications; save a short example or check that demonstrates the result.
Advanced10 minComing Soon28 Java: Improve exceptions and resources maintainability
Topic: exceptions and resources
Refine exceptions and resources in the context of Java language and runtime skills for maintainable applications; save a short example or check that demonstrates the result.
Advanced3 minComing Soon29 Java: Verify streams and lambdas end to end
Topic: streams and lambdas
Check that a complete small flow using streams and lambdas in the context of Java language and runtime skills for maintainable applications; save a short example or check that demonstrates the result.
Advanced5 minComing Soon30 Java: Audit threads and virtual threads against its source docs
Topic: threads and virtual threads
Check the implementation of threads and virtual threads in the context of Java language and runtime skills for maintainable applications; save a short example or check that demonstrates the result.
Advanced6 minComing Soon
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