A JDK provides development tools such as a compiler. The terminal and IDE should use compatible, deliberately selected versions so results are reproducible.
Before you begin
Be comfortable with variables, conditions, loops and basic methods. Use a small local project with a recorded JDK version and keep the input data fictional.
Work through the idea
Write the expected behavior before implementing the exercise. Keep the first version small enough to trace manually, then change one input or requirement. Record both the successful path and an invalid or empty-input case so that the result demonstrates reasoning rather than a copied output.
- Install from an official distribution
- Check java and javac versions
- Configure the project SDK
Practice task
Compile and run a small Java program from the terminal and then from the IDE.
Check your result
Record the tool versions and explain any difference between terminal and IDE behavior.
A mistake to avoid
Do not fix version problems by adding unrelated directories to PATH at random.
Keep a review note
Save the inputs or scenario, your reasoning and the result you checked. Explain one assumption and one case that needs more work. Revise the exercise after feedback and distinguish what you demonstrated from what remains untested.
Official reference for further study
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