Runtime.exec ignores the working directory argument

Hi Folks,
I need to run a batch file in a particular directory, from a Java program.
Here, I want to run "startMySQL.bat" from the ./bin directory.
I used the following code to do so.
     String commandToExecute = "startMySQL.bat";
     File file = new File("bin");
Process sqlPrcs = Runtime.getRuntime().exec(commandToExecute, null, file);
When I run these lines in a program, I get the following exception:
java.io.IOException: CreateProcess: startMySQL.bat error=2
at java.lang.Win32Process.create(Native Method)
at java.lang.Win32Process.<init>(Unknown Source)
at java.lang.Runtime.execInternal(Native Method)
at java.lang.Runtime.exec(Unknown Source)
at java.lang.Runtime.exec(Unknown Source)
at com.aperto.ems.packetmax.AuthenticationScreen.startDB(AuthenticationScreen.java:603)
at com.aperto.ems.packetmax.AuthenticationScreen.validateUserAndReinitialize(AuthenticationScreen.java:479)
at com.aperto.ems.packetmax.AuthenticationScreen.access$0(AuthenticationScreen.java:468)
at com.aperto.ems.packetmax.AuthenticationScreen$OnOKButtonPress.actionPerformed(AuthenticationScreen.java:628)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
at javax.swing.plaf.basic.BasicButtonListener$ReleasedAction.actionPerformed(Unknown Source)
at javax.swing.SwingUtilities.notifyAction(Unknown Source)
at javax.swing.JComponent.processKeyBinding(Unknown Source)
at javax.swing.JComponent.processKeyBindings(Unknown Source)
at javax.swing.JComponent.processKeyEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.KeyboardFocusManager.redispatchEvent(Unknown Source)
at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(Unknown Source)
at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(Unknown Source)
at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(Unknown Source)
at java.awt.DefaultKeyboardFocusManager.dispatchEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
"error=2" in Windows mean "not able to find the file".
Any clues on how I can run the batch file from a particular working directory?
Thanks!

Hi,
I changed the code to print the user.dir output and the absolute path of the file. It looks like this:
String commandToExecute = "startMySQL.bat";
File fl = new File("bin");
System.out.println(fl.getAbsolutePath());
System.out.println(System.getProperty("user.dir"));
Process sqlPrcs = Runtime.getRuntime().exec(commandToExecute, null, fl);
Below is the output I get:
C:\Program Files\Aperto\WaveCenter\Back-End_Server_2.0_build8\bin
C:\Program Files\Aperto\WaveCenter\Back-End_Server_2.0_build8
java.io.IOException: CreateProcess: startMySQL.bat error=2
at java.lang.Win32Process.create(Native Method)
at java.lang.Win32Process.<init>(Unknown Source)
at java.lang.Runtime.execInternal(Native Method)
at java.lang.Runtime.exec(Unknown Source)
at java.lang.Runtime.exec(Unknown Source)
at com.aperto.ems.packetmax.AuthenticationScreen.startDB(AuthenticationScreen.java:604)
at com.aperto.ems.packetmax.AuthenticationScreen.validateUserAndReinitialize(AuthenticationScreen.java:479)
at com.aperto.ems.packetmax.AuthenticationScreen.access$0(AuthenticationScreen.java:468)
at com.aperto.ems.packetmax.AuthenticationScreen$OnOKButtonPress.actionPerformed(AuthenticationScreen.java:629)
I assure you, "startMySQL.bat" is there under "bin"
Thanks,
Sandeep

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Runtime.exec ignores the working directory argument

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