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To check the installed JDK version on your computer, you can use the command line. This is useful to ensure that you have the correct version of the JDK installed.
Using Command Prompt or Terminal
1. javac -version
This command gives the version of the JDK (Java Development Kit).
javac -versionExample Output:
javac 23.0.12. java -version
This command gives the version of the JRE (Java Runtime Environment).
java -versionExample Output:
openjdk version "23.0.1" 2024-10-15OpenJDK Runtime Environment Temurin-23.0.1+11 (build 23.0.1+11)OpenJDK 64-Bit Server VM Temurin-23.0.1+11 (build 23.0.1+11, mixed mode)Important Considerations
Setting JAVA_HOME Environment Variable
Many applications depend on the JAVA_HOME environment variable. It is better to check whether it is set correctly.
echo %JAVA_HOME% # On Windowsecho $JAVA_HOME # On macOS or LinuxExample Output:
/Library/Java/JavaVirtualMachines/temurin-23.jdk/Contents/HomeDifferences Between JDK and JRE
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See more on geeksforgeeks.orgThe CMD(Command Interpreter is a command-lineInterface. It supports a set of commands and utilities; and has its own programming language for writing batch files. Open CMD and search java -version. First, we have to an environment variable to the installed path location of the java folder.Otherwise, it will show inv…- Estimated Reading Time: 3 mins
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