What is the difference in properties java.runtime.version and java.version The Next CEO of Stack OverflowWhat is reflection and why is it useful?Differences between HashMap and Hashtable?What is the difference between public, protected, package-private and private in Java?What is a serialVersionUID and why should I use it?Difference between StringBuilder and StringBufferDifference between wait() and sleep()What is the difference between JDK and JRE?What is a JavaBean exactly?What's the difference between @Component, @Repository & @Service annotations in Spring?What exactly is Apache Camel?

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What is the difference in properties java.runtime.version and java.version



The Next CEO of Stack OverflowWhat is reflection and why is it useful?Differences between HashMap and Hashtable?What is the difference between public, protected, package-private and private in Java?What is a serialVersionUID and why should I use it?Difference between StringBuilder and StringBufferDifference between wait() and sleep()What is the difference between JDK and JRE?What is a JavaBean exactly?What's the difference between @Component, @Repository & @Service annotations in Spring?What exactly is Apache Camel?










8















For logging purposes I'm getting the Java version written in log while Java program is running.



I found out that I can get the version with



System.getProperty("java.runtime.version") -> 1.8.0_202-b08


and



System.getProperty("java.version") -> 1.8.0_202


Result obviously is missing the "build" information in other but are there any other difference besides the result? Any certain cases when I should be using the first option rather than the second?










share|improve this question



















  • 4





    I’m not sure you can rely on java.runtime.version anymore, considering it is not documented. I would avoid it altogether.

    – VGR
    yesterday















8















For logging purposes I'm getting the Java version written in log while Java program is running.



I found out that I can get the version with



System.getProperty("java.runtime.version") -> 1.8.0_202-b08


and



System.getProperty("java.version") -> 1.8.0_202


Result obviously is missing the "build" information in other but are there any other difference besides the result? Any certain cases when I should be using the first option rather than the second?










share|improve this question



















  • 4





    I’m not sure you can rely on java.runtime.version anymore, considering it is not documented. I would avoid it altogether.

    – VGR
    yesterday













8












8








8








For logging purposes I'm getting the Java version written in log while Java program is running.



I found out that I can get the version with



System.getProperty("java.runtime.version") -> 1.8.0_202-b08


and



System.getProperty("java.version") -> 1.8.0_202


Result obviously is missing the "build" information in other but are there any other difference besides the result? Any certain cases when I should be using the first option rather than the second?










share|improve this question
















For logging purposes I'm getting the Java version written in log while Java program is running.



I found out that I can get the version with



System.getProperty("java.runtime.version") -> 1.8.0_202-b08


and



System.getProperty("java.version") -> 1.8.0_202


Result obviously is missing the "build" information in other but are there any other difference besides the result? Any certain cases when I should be using the first option rather than the second?







java system-properties






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited 16 hours ago









fantaghirocco

3,82852738




3,82852738










asked yesterday









JokkeriJokkeri

16715




16715







  • 4





    I’m not sure you can rely on java.runtime.version anymore, considering it is not documented. I would avoid it altogether.

    – VGR
    yesterday












  • 4





    I’m not sure you can rely on java.runtime.version anymore, considering it is not documented. I would avoid it altogether.

    – VGR
    yesterday







4




4





I’m not sure you can rely on java.runtime.version anymore, considering it is not documented. I would avoid it altogether.

– VGR
yesterday





I’m not sure you can rely on java.runtime.version anymore, considering it is not documented. I would avoid it altogether.

– VGR
yesterday












3 Answers
3






active

oldest

votes


















5
















System Property Name | System Property Content | Where Displayed in java version Output
---------------------|--------------------------|---------------------------------------
java.version | product version | Line one displays the product version
---------------------|--------------------------|---------------------------------------
java.runtime.version | product version | Line one displays the product version
| product build identifier | Line two displays the build identifier


From the J2SE SDK/JRE Version String Naming Convention documentation:




  • The content of the java.runtime.version system property can be expanded (beyond that of the java.version system property) to include the build id.



It seems that the property value can therefore be equal to the java.runtime content or differentiate by the build id as already pointed out in the question.



Anyway, as previously stated in a comment to the question, the java.runtime.version property doesn't appear among the currently documented system properties.






share|improve this answer
































    5














    java.version is a product version information of Java Runtime environment(JRE). JRE is an implementation of the Java Virtual Machine which actually executes Java programs.



    java.runtime.version is a product version along with build identifier of JRE.






    share|improve this answer
































      3














      One is JDK version, java.version and as the name suggest other is JRE version, R for the runtime






      share|improve this answer


















      • 1





        I'm not 100% sure but I think this might be a false assumption... As I run the app with only JRE (no JDK) both are working. I think fantaghirocco and Aniket Sahrawat are correct with their answer and the documentation VGR linked supports this

        – Jokkeri
        21 hours ago












      Your Answer






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      3 Answers
      3






      active

      oldest

      votes








      3 Answers
      3






      active

      oldest

      votes









      active

      oldest

      votes






      active

      oldest

      votes









      5
















      System Property Name | System Property Content | Where Displayed in java version Output
      ---------------------|--------------------------|---------------------------------------
      java.version | product version | Line one displays the product version
      ---------------------|--------------------------|---------------------------------------
      java.runtime.version | product version | Line one displays the product version
      | product build identifier | Line two displays the build identifier


      From the J2SE SDK/JRE Version String Naming Convention documentation:




      • The content of the java.runtime.version system property can be expanded (beyond that of the java.version system property) to include the build id.



      It seems that the property value can therefore be equal to the java.runtime content or differentiate by the build id as already pointed out in the question.



      Anyway, as previously stated in a comment to the question, the java.runtime.version property doesn't appear among the currently documented system properties.






      share|improve this answer





























        5
















        System Property Name | System Property Content | Where Displayed in java version Output
        ---------------------|--------------------------|---------------------------------------
        java.version | product version | Line one displays the product version
        ---------------------|--------------------------|---------------------------------------
        java.runtime.version | product version | Line one displays the product version
        | product build identifier | Line two displays the build identifier


        From the J2SE SDK/JRE Version String Naming Convention documentation:




        • The content of the java.runtime.version system property can be expanded (beyond that of the java.version system property) to include the build id.



        It seems that the property value can therefore be equal to the java.runtime content or differentiate by the build id as already pointed out in the question.



        Anyway, as previously stated in a comment to the question, the java.runtime.version property doesn't appear among the currently documented system properties.






        share|improve this answer



























          5












          5








          5









          System Property Name | System Property Content | Where Displayed in java version Output
          ---------------------|--------------------------|---------------------------------------
          java.version | product version | Line one displays the product version
          ---------------------|--------------------------|---------------------------------------
          java.runtime.version | product version | Line one displays the product version
          | product build identifier | Line two displays the build identifier


          From the J2SE SDK/JRE Version String Naming Convention documentation:




          • The content of the java.runtime.version system property can be expanded (beyond that of the java.version system property) to include the build id.



          It seems that the property value can therefore be equal to the java.runtime content or differentiate by the build id as already pointed out in the question.



          Anyway, as previously stated in a comment to the question, the java.runtime.version property doesn't appear among the currently documented system properties.






          share|improve this answer

















          System Property Name | System Property Content | Where Displayed in java version Output
          ---------------------|--------------------------|---------------------------------------
          java.version | product version | Line one displays the product version
          ---------------------|--------------------------|---------------------------------------
          java.runtime.version | product version | Line one displays the product version
          | product build identifier | Line two displays the build identifier


          From the J2SE SDK/JRE Version String Naming Convention documentation:




          • The content of the java.runtime.version system property can be expanded (beyond that of the java.version system property) to include the build id.



          It seems that the property value can therefore be equal to the java.runtime content or differentiate by the build id as already pointed out in the question.



          Anyway, as previously stated in a comment to the question, the java.runtime.version property doesn't appear among the currently documented system properties.







          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited 16 hours ago

























          answered yesterday









          fantaghiroccofantaghirocco

          3,82852738




          3,82852738























              5














              java.version is a product version information of Java Runtime environment(JRE). JRE is an implementation of the Java Virtual Machine which actually executes Java programs.



              java.runtime.version is a product version along with build identifier of JRE.






              share|improve this answer





























                5














                java.version is a product version information of Java Runtime environment(JRE). JRE is an implementation of the Java Virtual Machine which actually executes Java programs.



                java.runtime.version is a product version along with build identifier of JRE.






                share|improve this answer



























                  5












                  5








                  5







                  java.version is a product version information of Java Runtime environment(JRE). JRE is an implementation of the Java Virtual Machine which actually executes Java programs.



                  java.runtime.version is a product version along with build identifier of JRE.






                  share|improve this answer















                  java.version is a product version information of Java Runtime environment(JRE). JRE is an implementation of the Java Virtual Machine which actually executes Java programs.



                  java.runtime.version is a product version along with build identifier of JRE.







                  share|improve this answer














                  share|improve this answer



                  share|improve this answer








                  edited yesterday

























                  answered yesterday









                  Aniket SahrawatAniket Sahrawat

                  6,27121339




                  6,27121339





















                      3














                      One is JDK version, java.version and as the name suggest other is JRE version, R for the runtime






                      share|improve this answer


















                      • 1





                        I'm not 100% sure but I think this might be a false assumption... As I run the app with only JRE (no JDK) both are working. I think fantaghirocco and Aniket Sahrawat are correct with their answer and the documentation VGR linked supports this

                        – Jokkeri
                        21 hours ago
















                      3














                      One is JDK version, java.version and as the name suggest other is JRE version, R for the runtime






                      share|improve this answer


















                      • 1





                        I'm not 100% sure but I think this might be a false assumption... As I run the app with only JRE (no JDK) both are working. I think fantaghirocco and Aniket Sahrawat are correct with their answer and the documentation VGR linked supports this

                        – Jokkeri
                        21 hours ago














                      3












                      3








                      3







                      One is JDK version, java.version and as the name suggest other is JRE version, R for the runtime






                      share|improve this answer













                      One is JDK version, java.version and as the name suggest other is JRE version, R for the runtime







                      share|improve this answer












                      share|improve this answer



                      share|improve this answer










                      answered yesterday









                      Rohail UsmanRohail Usman

                      447




                      447







                      • 1





                        I'm not 100% sure but I think this might be a false assumption... As I run the app with only JRE (no JDK) both are working. I think fantaghirocco and Aniket Sahrawat are correct with their answer and the documentation VGR linked supports this

                        – Jokkeri
                        21 hours ago













                      • 1





                        I'm not 100% sure but I think this might be a false assumption... As I run the app with only JRE (no JDK) both are working. I think fantaghirocco and Aniket Sahrawat are correct with their answer and the documentation VGR linked supports this

                        – Jokkeri
                        21 hours ago








                      1




                      1





                      I'm not 100% sure but I think this might be a false assumption... As I run the app with only JRE (no JDK) both are working. I think fantaghirocco and Aniket Sahrawat are correct with their answer and the documentation VGR linked supports this

                      – Jokkeri
                      21 hours ago






                      I'm not 100% sure but I think this might be a false assumption... As I run the app with only JRE (no JDK) both are working. I think fantaghirocco and Aniket Sahrawat are correct with their answer and the documentation VGR linked supports this

                      – Jokkeri
                      21 hours ago


















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