Run cmd-line in java fails

Question

I am facing the following problem:

I am writing a java-application in Eclipse. Inside my application I want to start a cmd command:

C:/Users/User1/Content-Integration Testing Framework/JDBC Connector/bin/connect -h

The command 'connect -h' is a an enterprise internal application which works fine. If I would use a comand line a would have to chance my current directory like that:

cd C:/Users/User1/Content-Integration Testing Framework/JDBC Connector/bin/

and afterwards I would just type connect -h This works great. But I am not really shure how to execute this command within a java application.

Here they tell me how to run a cmd inside a java application: How to use "cd" command using Java runtime?

But if I do that:

Runtime.getRuntime().exec("'C:/Users/User1/Content-Integration Testing Framework/JDBC Connector/bin/connect' -h");

Eclipse tells me:

java.io.IOException: Cannot run program "'C:/Users/User1/Content-Integration": CreateProcess error=2, Das System kann die angegebene Datei nicht finden
    at java.lang.ProcessBuilder.start(Unknown Source)

It cuts my command at "Content-Integration".

can someone help me please?

Brian Agnew · Accepted Answer · 2012-07-30 08:58:57Z

2

You should use the version of exec() that takes multiple args via a String array.

Runtime.exec(String s) will split your string using a tokenizer (this is why quoting the string won't work, and why you see the behaviour you do). If you resolve the executable and arguments yourself, and pass each as an array element in the above e.g.

String[] args = new String[]{"executable", "arg1", "arg2"};
Runtime.getRuntime().exec(args); // don't forget to collect stdout/err etc.

then you will bypass Runtime.exec(String s)'s splitting behaviour.

edited Jul 30, 2012 at 8:58

answered Jul 30, 2012 at 8:53

Brian Agnew

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7 Comments

assylias Over a year ago

Just tried with the solution I propose (including spaces in the path) and it works as expected...

Metalhead89 Over a year ago

Ok thank you very much for your replay. The first problem is solved. I typed the following: Process p = Runtime.getRuntime().exec(new String[]{"C:/Users/User1/'Content-Integration Testing Framework/JDBC Connector/bin/","connect","-h"}); It does not split my first argument but now there is a similar problem: java.io.IOException: Cannot run program "C:/Users/User1/'Content-Integration Testing Framework/JDBC Connector/bin/": CreateProcess error=2, Das System kann die angegebene Datei nicht finden

assylias Over a year ago

@Metalhead89 There seems to be an extra quote ' after User1

Metalhead89 Over a year ago

I did a mistake: there was an "'" in between but it still does not works: it tells me: java.io.IOException: ......: CreateProcess error=5, Zugriff verweigert

assylias Over a year ago

@Metalhead89 You probably meant:

Process p = Runtime.getRuntime().exec(new String[]{"C:/Users/User1/Content-Integration Testing Framework/JDBC Connector/bin/connect","-h"})

(with connect in the first string)

|

assylias · Accepted Answer · 2012-07-30 09:03:56Z

1

Have you tried:

Runtime.getRuntime().exec("\"C:/Users/User1/Content-Integration Testing Framework/JDBC Connector/bin/connect\" -h");

edited Jul 30, 2012 at 9:03

answered Jul 30, 2012 at 8:52

assylias

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buxter · Accepted Answer · 2012-07-30 09:33:39Z

0

This happens because your path contains spaces. Make sure to wrap it in "" and it will work.

Runtime.getRuntime().exec("\"C:/Users/User1/Content-Integration Testing Framework/JDBC Connector/bin/connect\" -h");

answered Jul 30, 2012 at 9:33

buxter

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