What’s javac.exe (OpenJDK Platform binary)? Is it safe or a virus?

`javac.exe` is the Java compiler tool provided with the OpenJDK and is used to compile Java source code files (written in `.java` format) into bytecode files (with `.class` extension). Bytecode is an intermediate code that can be executed on the Java Virtual Machine (JVM). The tool is essential for Java development as it translates human-readable Java code into a format the JVM can understand and execute. The "OpenJDK Platform binary" description typically signifies that the Javac tool comes bundled with the OpenJDK distribution, an open-source implementation of Java. It is maintained by contributors, including Google, as part of Java’s ecosystem.

Below are 4 simple steps you can take to see if the javac.exe process is safe or malware.

Researched by Laura @ SpyShelter Labs

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A Trojan is a harmful software that pretends to be a legitimate program or file to deceive users into downloading it. It can steal personal information, damage files, or give hackers control over the infected device.

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More about javac.exe on WINDOWS

Who makes javac.exe (OpenJDK Platform binary)?

We’ve found Google LLC should be the publisher of javac.exe.

How do we know? Our SpyShelter cybersecurity labs focuses on monitoring different types of Windows PC executables and their behaviors for our popular SpyShelter Antispyware software. Learn more about us, and how our cybersecurity team studies Windows PC executables/processes.

What does it mean if someone is the publisher of a PC .exe (executable or process)?

The publisher of an executable is the entity responsible for its distribution and authenticity. Most processes/executables on your PC should be signed. The signature on the executable should have been verified through a third party whose job it is to make sure the entity is who it says it is. Find an unsigned executable? You should consider scanning any completely unsigned .exe on your PC.

Last updated: March 21, 2025

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Our team at SpyShelter has been studying Windows PC executables for over 15 years, to help fight against spyware, malware, and other threats. SpyShelter has been featured in publications like The Register, PC Magazine, and many others. Now we’re working to share free, actionable, and easy to understand information about Windows executables (processes) with the world, to help as many people as possible keep their devices safe. Learn more about us on our "About SpyShelter” page.

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