BEG-005

بيئة التطوير

في هذه الصفحة 8 موضوعات

نص الدروس والتمارين باللغة الإنجليزية، بينما تبقى واجهة الموقع وعناوين الدروس بالعربية.

نظرة عامة

90 دقيقة قراءة · 2 ساعة تدريب (تقدير)

Install the baseline JDK and confirm the installation with java -version and javac -version.
Install IntelliJ IDEA and create, run, and close a project.
Explain environment variables and PATH, and fix a "command not found" error caused by a missing PATH entry.
Show hidden file extensions and explain why .java vs .java.txt matters.

Outcomes: 1, 2, 3, 4 · Time: ~2 h

Acceptance: screenshots of both states and the fix.

ID	Outcome	Task
BEG-005-EX01	4	Turn on file extensions and show `.java` and `.txt` files side by side.
BEG-005-EX02	4	Why does `Hello.java.txt` not compile as Java?
BEG-005-EX03	1	Print the Java and compiler versions.
BEG-005-EX04	3	Print your `PATH` and find the JDK folder in it.
BEG-005-EX05	3	You get "command not found" for `java`. List two possible causes.
BEG-005-EX06	2	Create a project in IntelliJ, run it, and close it.

أظهر الحلول

EX01 Windows: File Explorer → View → File name extensions. macOS: Finder preferences.
EX02 Its real extension is .txt, so it is treated as plain text.
EX03 java -version and javac -version; both print versions.
EX04 Windows: echo %PATH%; Bash: echo $PATH; PowerShell: $env:PATH.
EX05 JDK not installed, or its bin folder not on PATH; or the terminal was opened before the change.
EX06 New Project → JDK → add a class with main → Run → File → Close Project.

Outcomes: O1 install JDK · O2 IntelliJ · O3 PATH · O4 extensions.

أظهر الإجابات

Practical check: both version commands print, and a new project runs in the IDE. Pass: both done without help.

Installing a JRE instead of a JDK; multiple JDKs with the wrong one first on PATH; editing PATH and not opening a new terminal.

Practical check: versions printed and a new project runs in the IDE.

Every lab depends on it; environment differences return in JNR-054.