How to execute echo %errorlevel% in java

Question

I want to read the return code of a cmd command in Java. For that I used:

Runtime.exec("echo %errorlevel%")

but instead of echoing the error code it is echoing %errorlevel%.

Answer 1

Not sure what are you using this for. But it seems that you want exit code of the command you executed in you program. If you have Process object (corresponding to your command) available, you can either use process.waitFor() or process.exitValue() methods to get the exit code of your process.

Answer 2

you are looking for this:

System.getenv("errorlevel");

Thanks, M

Answer 3

if You are trying to get "errorlevel" environment variable, you can use System.getenv()

String errorlevel = System.getenv("errorlevel");

But the above method is deprecated and it is advisable to use

String errorlevel = System.getProperty("errorlevel");

Answer 4

Process process = Runtime.exec(original_command);
int exitCode = process.waitFor();
System.out.println("Command returned " + exitCode);