Match each Java tool to its function.
Drag a concept onto its matching description — or click a concept then click the description.
Compiles .java source files into .class bytecode
Launches the Java application (JVM)
Generates API documentation from source code comments
Creates and manages JAR archives
Debugger for Java programs
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
javac: Compiles Java source code into bytecode
The correct matches are: javac compiles source code, java runs applications, javadoc generates documentation, and jar creates archives. Common confusions involve mixing up javac with jar and java with javadoc.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
javac: Compiles Java source code into bytecode
Why this is correct
javac is the Java compiler, which translates .java files into .class files.
java: Launches the Java Virtual Machine to run applications
Why this is correct
java command starts a JVM and loads the specified class.
javadoc: Generates API documentation in HTML format
Why this is correct
javadoc parses documentation comments to produce HTML documentation.
jar: Packages class files and resources into a single archive
Why this is correct
jar tool creates a compressed archive (JAR file) of compiled classes.
javac: Packages class files into an archive
Why it's wrong here
Incorrect — packaging is done by jar, not javac.
java: Generates API documentation
Why it's wrong here
Incorrect — documentation generation is done by javadoc.
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About these practice questions
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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