AP Java Practice Lab

Practice Problems 3 problems

Tip: Work through each problem without looking at the solution. Use the tests to check your logic, not just your output.

Code Editor Java 17 (AP style)

Select a problem

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Choose a problem on the left. You’ll see the prompt, starter code, and example tests.

Write your solution in the editor below, then click Run Code to send it to your Java runner.

Teacher note: This page expects a POST endpoint at /api/java/run. Wire it up to your favorite sandbox or judge.

Use Tab to indent. Focus on readable code: good names, clear logic, and correct edge cases.

Output & Tests Feedback zone

Idle. Write some code ✨

Console no runs yet

// Output from your program will appear here.

Sample tests

Select a problem to see the AP-style test cases.