How do I retrieve the version of the Java Compiler and the isCOBOL Compiler that produced a given class file?

Question ID : 271
Created on 2016-05-02 at 9:35 AM
Author : Veryant Support [support@veryant.com]

Online URL : http://support.veryant.com/support/phpkb/question.php?ID=271



The compilation of a program with isCOBOL is done in two steps. In the first step the isCOBOL Compiler (iscc) parses the COBOL source code and produces an intermediate Java source. In the second step the Java Compiler (javac) compiles the Java source into a class file.

In order to know the version of the isCOBOL Compiler used to produce the class file, run the following command:

    iscrun -info PROGRAM.class

The command output will contain this text:

    COBOL: java OBJECTs

It means that the program was compiled with a newer version of isCOBOL and your old version is not able to process the class, or

    COBOL: compiled with isCOBOL build #??? ....

The ??? number tells you the build number. Here's a table of the build numbers and the isCOBOL version that matches it.

Build number
isCOBOL version
261
2007
338
2007.1
413
2008
433
2008.1
510
2009
530
2009.1
546
2009.2
570
2010 R1
600
2010 R2
626
2010 R3
641
2011 R1
663
2011 R2
672
2011 R3
681
2012 R1
705
2012 R2
723
2013 R1
745
2013 R2
780
2014 R1
821
2015 R1
855
2016 R1
875
2016 R2
893
2017 R1
910
2017 R2
930
2018 R1
950
2018 R2
977
2019 R1
995
2019 R2
1011
2020 R1
1023
2020 R2
1041
2021 R1
1050
2021 R2
1060
2022 R1
1074
2022 R2
1090
2023 R1
1105
2023 R2

In order to check the Java version number in a .class file you can use the javap utility that is distributed with the JDK.
For example, the following command will report the version of a program named MYPROG.

   javap -verbose MYPROG | grep major
or run
  javap -verbose MYPROG
and the version numbers will be reported in the first 5 lines.

Note that MYPROG.class must be in the class path.
You can specify a class path with "javap -cp".

The major (or "magic") version is mapped to the Java SE version here.



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