Unable to access value in System Environment Variable using Java

Question

I am using Java code to get the value of a System Environment Variable using the Runtime, Process java classes.
The code works fine in tomcat, but when deployed in 9ias the code is unable to retrieve the value stored in the System environment variable in Windows 2000.

Answer 1

Thanks for the comment steve, here is the code which i am using.
     public String getEnvironmentVariable()
               // This will get the FEDREP_HOME environment variable
               String FEDREP_HOME = null;
               Process p = null;
               Runtime rt = Runtime.getRuntime();
                    try {
                         // invokes a shell-command to retrieve FEDREP_HOME variable
                         String OS = System.getProperty("os.name").toLowerCase();
                              // Get the Windows 95 environment variable
                              if (OS.indexOf("windows 9") > -1)
                                        p = rt.exec( "command.com /c echo %FEDREP_HOME%" );
                              // Get the Windows NT environment variable
                              else if (OS.indexOf("nt") > -1)
                                        p = rt.exec( "cmd.exe /c echo %FEDREP_HOME%" );
                              // Get the Windows 2000 environment variable
                              else if (OS.indexOf("2000") > -1)
                                        p = rt.exec( "cmd.exe /c echo %FEDREP_HOME%" );
                              // Get the Windows XP environment variable
                              else if (OS.indexOf("xp") > -1)
                                        p = rt.exec( "cmd.exe /c echo %FEDREP_HOME%" );
                              // Get the unix environment variable
                              else if (OS.indexOf("linux") > -1)
                                        p = rt.exec( "sh -c echo $FEDREP_HOME" );
                              // Get the unix environment variable
                              else if (OS.indexOf("unix") > -1)
                                        p = rt.exec( "sh -c echo $FEDREP_HOME" );
                              // Get the unix environment variable
                              else if (OS.indexOf("sunos") > -1)
                                        p = rt.exec( "sh -c echo $FEDREP_HOME" );
                              } else
                                        System.out.println("OS not known: " + OS);
                         // set up to read subprogram output
                         InputStream is = p.getInputStream();
                         InputStreamReader isr = new InputStreamReader(is);
                         BufferedReader br = new BufferedReader(isr);
                         // read output from subprogram
                         FEDREP_HOME = br.readLine();
                         br.close();
                    } catch(Exception ex)
                              System.out.println("Error when getting FEDREP_HOME environment variable");
                              ex.printStackTrace();
          return(FEDREP_HOME);