Launching external console application from Java

in a Java application I need to run an external console application. With the window's ones everything is OK:

try {
System.out.println("Running...");
    Runtime.getRuntime().exec("notepad.exe");
    System.out.println("End.");
}
catch(Exception e) {
    System.out.println(e.getMessage());
}

launches notepad successfully.

But if I put 开发者_C百科D:\\MyProg.exe or .bat or even cmd.exe (which is it PATH as notepad is) it does not work. Without any exeptions. Just:

Running...
End.

First off, most likely Runtime.exec() is returning asynchronously, so just printing "end" will always work, since the exec call returns immediately, which is what you're seeing.

There's a bunch of other problems that could be showing up here. I think what is happening is that the programs you are calling might be outputting I/O on stdout that you are failing to read, or perhaps you need to wait for it to finish before exiting the java process. There's a great article on the various problems with Runtime.exec() you should probably read, it covers this and other problems.

It is because notepad placed in special folder and this folder exists in Path variable.

Run cmd using following line:

Runtime.getRuntime().exec("cmd.exe /c start");

Run other application:

Runtime.getRuntime().exec("cmd.exe /c start C:\\path\\to\\app.exe");