A Beginner Breaks Down Java's Write-Compile-Run Workflow with 5 Key Questions

A beginner Java learner documented five foundational questions that arose while following the Telusko Core Java video series, specifically its third lesson on writing first code. The article explains the role of the .java file extension, which identifies Java source code files written by developers before compilation. It clarifies the distinction between the javac compiler, which converts source code into bytecode stored in .class files, and the java command, which runs that compiled bytecode via the JVM. The piece also covers JShell, Java's interactive tool that lets users run code snippets without the full compile-run cycle required by standard source files. Additional topics include why string literals require double quotes and common mistakes beginners make during the write-compile-run process.