Java 11 allows you to execute single file source code programs without a separate compilation step. So, given HelloWorld.java you can run it from the source file with:

java HelloWorld.java

This works fine on z/OS.

Java 11 also allows you to run a Java program as a script with a shebang, e.g. HelloWorld (without .java extension):

#!/usr/lpp/java/J11.0_64/bin/java --source 11
class HelloWorld                            
{                                            
    public static void main(String args[])   
    {                                        
        System.out.println("Hello World");   
    }                                        
}                                            

Should run with the command

./HelloWorld

This doesn't seem to work on z/OS. I get the message:

error: no filename

Does anyone have this working on z/OS? Any ideas what I might be doing wrong? I tried with a UTF8 file instead of EBCDIC, but that seemed to be further from working (I don't think the shebang was recognized for UTF8).

Thanks

Andrew Rowley

Hello Andrew,

Hope all is well with you. Thank you for reporting this issue. The use of single-file Java source code programs,  supplied as a UNIX script shebang file, is not currently supported on Semeru SDKs on z/OS [1]. The workaround is to put the source into a *.java file as you have noted.

The root cause is still under investigation by the team.

Regards,
Joran

[1] https://www.ibm.com/docs/en/semeru-runtime-ce-z/11?topic=support-known-issues-limitations

Java 11 allows you to execute single file source code programs without a separate compilation step. So, given HelloWorld.java you can run it from the source file with:

java HelloWorld.java

This works fine on z/OS.

Java 11 also allows you to run a Java program as a script with a shebang, e.g. HelloWorld (without .java extension):

#!/usr/lpp/java/J11.0_64/bin/java --source 11
class HelloWorld                            
{                                            
    public static void main(String args[])   
    {                                        
        System.out.println("Hello World");   
    }                                        
}                                            

Should run with the command

./HelloWorld

This doesn't seem to work on z/OS. I get the message:

error: no filename

Does anyone have this working on z/OS? Any ideas what I might be doing wrong? I tried with a UTF8 file instead of EBCDIC, but that seemed to be further from working (I don't think the shebang was recognized for UTF8).

Thanks

Andrew Rowley