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CompletableFuture Composition
intermediatejava
Background
CompletableFuture enables functional async programming in Java without callback hell.
Problem
Compose multiple async operations using CompletableFuture chaining and combine results.
Input
Async operations to chain
Output
Combined async result
Sample tests
Sample 1
Input: future.thenApply(x -> x*2)
Expected: transformed future
Your solution
Learning objective
Learn async composition and future chaining