Why Doesn't My Windows Command Prompt Recognize 'javac'?

Troubleshooting "javac is not recognized" Error in Windows

Problem:

While trying to compile Java programs, you encounter the error: "'javac' is not recognized as an internal or external command, operable program or batch file."

Solution:

1. Verify Java Installation:

Ensure you have installed the Java Development Kit (JDK), not just the Java Runtime Environment (JRE). Check your installed programs list for "Development Kit."

2. Locate the Java Path:

• Exe installer: Navigate to C:Program Files (x86)Java and find the latest JDK version folder named "jdkX.XX.X.XX". Enter the bin directory and copy its path.
• Zip file: Extract the JDK to a suitable location, find the bin folder, and copy its path.

3. Edit Environment Variables:

• Use the search bar to find "environment variable" settings.
• Look for the PATH variable and inspect its value for any Java paths. Remove duplicate or outdated Java paths, as well as "C:ProgramDataOracleJavajavapath."

4. Add Java Path to PATH:

• Paste the correct Java path at the end of the PATH variable and separate it with a semicolon.
• For pre-Windows 10 users, ensure correct semicolon placement.

5. Set JAVA_HOME:

• Create or edit the JAVA_HOME environment variable as a system variable.
• Set its value to the Java directory path without the bin directory, e.g., C:Program Files (x86)JavajdkX.XX.X.XX

6. Close and Re-open Command Prompt:

• Close and re-open Command Prompt to load the updated environment variables.

7. Additional Tips:

• Remove paths related to uninstalled software from PATH.
• Consider adjusting the order of paths if necessary.
• Remember to set JAVA_HOME after upgrading Java.

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