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Work through a problem, compare a solution, then explain the choices you made. Explore an original workbook and try its free sample.
JAVA 1710 tasks
Java interview practice workbook
Ten original coding tasks covering methods, arrays, object behaviour, collections and input handling. Work through each task, then compare with a complete Java 17 solution.
- 10 original coding tasks
- Complete runnable Java 17 solutions
- Expected output and review points
- A self-assessment rubric and interview follow-up prompts
SQLITE 312 tasks
SQL query practice workbook
Twelve query tasks using one synthetic dataset. Practice filters, grouping, joins, missing values and subqueries, then compare ordered results with an answer key.
- 12 original query tasks
- SQLite setup script with synthetic data
- Working queries and expected result rows
- Review points for joins, counts and result ordering
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