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1. stackoverflow.com › questions › 22539779java - How to tell if JRE or JDK is installed - Stack Overflow

   stackoverflow.com › questions › 22539779

   Warning: This will still fail for JRE + JDK combos which report the JRE's sun.boot.library.path identically between the JRE and the JDK. For example, Fedora's JDK will fail (or pass depending on how you look at it) when the above code is run. See unit tests below for more info... Unit tests:

2. mkyong.com › java › how-to-checkHow to check JDK version that installed on your computer

   mkyong.com › java › how-to-check

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   Jun 29, 2020 · We can use java -version to find out the version of the installed JRE. In the below example, the JRE version is 1.8.0_252. Terminal. $ java -version. openjdk version "1.8.0_252". OpenJDK Runtime Environment (build 1.8.0_252-8u252-b09-1~19.10-b09) OpenJDK 64-Bit Server VM (build 25.252-b09, mixed mode) The JDK and JRE versions can be different ...

3. www.javatpoint.com › how-to-check-current-jdkHow to Check Current JDK Version installed in Your System ...

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   To find the Java version in CMD, follow the steps given below: Step 1: Open the Command Prompt by pressing Windows Key + R, type cmd and press enter key or click on the Ok button. It opens the Command Prompt window. Step 2: Type the following command in the prompt window and press enter key. It shows the Java version.

4. www.codejava.net › java-core › how-to-check-java-versionHow to check Java version - CodeJava.net

   www.codejava.net › java-core › how-to-check-java-version

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   Aug 26, 2019 · Note that there can be multiple installations of JRE and/or JDK on a computer. In that case, the version of Java you see in the console is of the first JRE/JDK found in the list of environment variables. To check the version exactly, you need to go to the bin directory of a JDK/JRE installation, for example: cd C:\Program Files\Java\jdk1.8.0 ...

5. askubuntu.com › questions › 150057How can I tell what version of Java I have installed?

   askubuntu.com › questions › 150057

   Jun 12, 2012 · 119. The simplest way is: update-java-alternatives -l shows you all the Java versions you have installed. java -version shows you the Java version you are using. java -showversion shows you the Java version you are using and help. Normally it would be OpenJDK. Share.

6. superuser.com › questions › 1221096How do I check what version of Java I have installed?

   superuser.com › questions › 1221096

   Jun 20, 2017 · Open CMD (In Windows click Start then type cmd, Command Prompt or PowerShell) and execute the following commands. For multiple java installations: wmic product where "name like 'Java%'" get name, version. For default java installation: java -version. Share.

7. People also ask

   How do I check the version of a JDK/JRE installation?

   • To check the version exactly, you need to go to the bin directory of a JDK/JRE installation, for example: And type the java –version command. Nam Ha Minh is certified Java programmer (SCJP and SCWCD). He began programming with Java back in the days of Java 1.4 and has been passionate about it ever since.

   How to check Java version - CodeJava.net

   www.codejava.net/java-core/how-to-check-java-version

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   What is the difference between JDK and JRE?

   • The Java development kit (JDK) contains tools for Java development, and the Java Runtime Environment (JRE) contains a JVM to convert byte code .class to machine code, and execute it, in short, the JRE runs Java program. We can use javac -version to find out the version of the installed JDK. In the below example, the JDK version is 11.0.7

   How to check JDK version that installed on your computer

   mkyong.com/java/how-to-check-current-java-version-installed-in-your-computer/

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   How do I check if a Java version is installed?

   • You can open up terminal and simply type this should show you the version of java installed on the system (assuming that you have set the path of the java in system environment). And if you haven't, add it via and if you unsure if you have java at all on your system just use find in terminal i.e. find / -name "java"

   java - How to tell if JRE or JDK is installed - Stack Overflow

   stackoverflow.com/questions/22539779/how-to-tell-if-jre-or-jdk-is-installed

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   What if JDK/JRE is not installed?

   • In case you’re using OpenJDK, the output should be: If JDK/JRE is not installed or somehow the PATH environment variable is not updated for Java, you can see the following message: Note that there can be multiple installations of JRE and/or JDK on a computer.

   How to check Java version - CodeJava.net

   www.codejava.net/java-core/how-to-check-java-version

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   How do I know if a Java version is OpenJDK?

   • The Java system property System.getProperty(...) to consult is "java.runtime.name". This will distinguish between "OpenJDK Runtime Environment" and "Java (TM) SE Runtime Environment". They both have the same vendor - "Oracle Corporation". This property is also included in the output for java -version. Open a command prompt: Version: java -version

   java - Which JRE am I using? - Stack Overflow

   stackoverflow.com/questions/8472121/which-jre-am-i-using

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   How do I know if a JDK is installed?

   • Normally a jdk installation has javac in the environment path variables ... so if you check for javac in the path, that's pretty much a good indicator that you have a jdk installed. I realize that the OP was asking about a Mac, so it may be different there. But as for Windows, this test does not seem reliable.

   java - How to tell if JRE or JDK is installed - Stack Overflow

   stackoverflow.com/questions/22539779/how-to-tell-if-jre-or-jdk-is-installed

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8. www.wikihow.com › Check-Your-Java-Version-in-theHow to Check the Java Version at the Windows Command Prompt

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   Sep 22, 2024 · Do you need to check if the latest version of Java is installed on your Windows PC? An easy way to see if Java is up to date is to type a quick command at the Windows command prompt. No matter which version of Windows you're using, you can type "java -version" into the command prompt (cmd) to see the version number of your Java installation.