Concept

Loops

Three parts: init → condition → update . 💡 Use for-each when you need each element , not the index.

Where it fits

Packages: Core Java (pkg1core)

Existing chapters for this concept.

Loops
Foundation
Three parts: init → condition → update . 💡 Use for-each when you need each element , not the index.
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Existing Java examples.

core 6 Loops
Core Java · pkg1core/core6Loops.java · pkg1core · core6Loops.java
- Use a classic `for` when you need the index. - Use for-each to iterate elements cleanly. - `break`/`continue` can target a labeled loop to control nesting.
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Existing interview questions.

When loops over streams?
Functional Programming & Streams — Interview Questions (100+)
Keep lambdas pure, stateless, and non-interfering.
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try-catch in loop?
Exceptions — Interview Questions (77+)
@throws tags.
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+ in loop problem?
Strings & Performance — Interview Questions (82+)
NPE if reference null on instance concat.
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Why not nanoTime loops?
Performance & Tuning — Interview Questions (60+)
Profile, fix the biggest bottleneck, verify, repeat.
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Core Java — Interview Questions (200+)
Core Java — Interview Questions (200+)
Clear naming, small methods, immutability, proper exceptions, tests, and idiomatic APIs.
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