Problem in process

[syruss kumar]

HI ,

I tried to access the command prompt and executing DOS commands using java .i successfully execute the command but when i tried to execute multiple DOS commands using command array its giving me error.

public class ExploreRuntimeProcess {
	
	
	public void executeProcess(){
		
		
		Runtime runtime= Runtime.getRuntime();
		try {
			
			String[] commandArr={"cmd /c dir"};
			Process process=runtime.exec(commandArr);
			
			
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
	
	public static void main(String[] args) {
		
		new ExploreRuntimeProcess().executeProcess();
	}

}

the error is


java.io.IOException: Cannot run program "cmd /c dir": CreateProcess error=2, The system cannot find the file specified
at java.lang.ProcessBuilder.start(Unknown Source)
at java.lang.Runtime.exec(Unknown Source)
at java.lang.Runtime.exec(Unknown Source)
at com.java.language.ExploreRuntimeProcess.executeProcess(ExploreRuntimeProcess.java:15)
at com.java.language.ExploreRuntimeProcess.main(ExploreRuntimeProcess.java:25)
Caused by: java.io.IOException: CreateProcess error=2, The system cannot find the file specified
at java.lang.ProcessImpl.create(Native Method)
at java.lang.ProcessImpl.<init>(Unknown Source)
at java.lang.ProcessImpl.start(Unknown Source)
... 5 more

please suggest me how to resolve this .

Thanks in advance

[Stephan van Hulst]

Hi Syruss,

Read the documentation for Runtime.exec() and take a good look at the array you're trying to pass to it.

[syruss kumar]

Thanks a lot stephan

[John Riool]

Create your array with one command or option per element. Also note there should not be a trailing space in your elements.

String[] commandArr = { "cmd", "/c", "dir" };