Java · Intermediate
Functional Interfaces and Lambda Expressions
Functional interfaces contain exactly one abstract method and can be implemented using lambda expressions to provide a concise way to represent anonymous functions.
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Intermediate Java exercises
Read these Intermediate Java snippets line by line — each one comes with a written breakdown of what the code does and why.
Java · Intermediate
Immutability with Records
Records are a special kind of class that acts as a transparent carrier for immutable data, automatically generating constructors, accessors, equals, and hashCode.
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Stream API for Collection Processing
Streams allow functional-style operations on sequences of elements, such as filtering, mapping, and reducing collections efficiently.
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