使用Runtime.exec从Java运行进程-退出代码139

Question

I want to run a C++ program from Java in Linux

Runtime rt = Runtime.getRuntime();
Process pr = rt.exec("/home/user/myProgram inputFilePath secondArgument");
int exitVal = pr.waitFor();

If I run the same command from a terminal everything works fine, the problem is when I run it from Java. I am getting exit code 139. The program gets executed but something fails while executing. Actually if I do not enter the inputFilepath the program is executed just fine and I can catch the message over the stdout about the "missing input file".

Any idea?

SOLUTION: After some trial and error I found the problem. Apparently a "\\n" was needed at the end of the parameters, probably used as flag by the C++ program I was running. There was for sure a segmentation fault while parsing the arguments.

Answer 1

139 is the exit code that you'd see if the C++ program crashed with a segmentation fault. This would indicate a memory access bug within the C++ program. See Are there any standard exit status codes in Linux? .

Alternately, the program could have exited with exit code 139 for reasons of its own. Without knowing what the program is, it's not really possible to be more specific.

Answer 2

Did you check what this command returns in your Linux console? Try to run "/home/user/myProgram inputFilePath secondArgument; echo $?". 139 on exit means the command returned 139 and it is not a problem of your Java code.