JButton to send command to Java console

[Fox28]

I am not able to execute a system command from my script Java. Yet I have taken the trouble to compare several documentations on the net but none filled me enough to find fault with my code. The simple thing is that I need help for JButton to send command to Java console or anything that can perform the same thing. I am not an expert in Java but started to learn this.

[Zecho]

Here is the sample code that can be helpful to you for the thing that you need to achieve. Try this code and you will be able to the things.

import java.io. *;
 import javax.swing .*;
 import java.awt.event .*;
 import java.awt.Dimension;

 public class extends JFrame (swing2
		
	 Public swing2 () 
	 (
	
		 super ("My Window");
		
		 / * 
			  * Management of the closing event of the screen 
		  *
		 L = new WindowAdapter WindowListener () (
			 public void windowClosing (WindowEvent e) (
				 System. Exit (0);
			 )
		 )
		 addWindowListener (l);
		
		 JLabel jLabel1 = new JLabel ("Directory name:"); 
    		 JLabel jLabel2 = new JLabel ("Name *. pdf"); 
		
		 JTextField nom_rep = new JTextField ("directory name");
    		 nom_rep. setPreferredSize (new Dimension (150, 20));
    		 JTextField f_pdf = new JTextField ("fichier_pdf");
		 f_pdf. setPreferredSize (new Dimension (150, 20));
		
		 / * 
			  * Added button 
		  *
		 JButton button = new JButton ("create file");
		
		 / * 
			  * Adding a file selector 
		  *
		 JFileChooser chooser = new JFileChooser ();
		
		 / * 
			  * Added panel (specify) 
		  *
		 JPanel panel = new JPanel ();
		 panel. add (jLabel1);
		 panel. add (nom_rep);
		 panel. add (jLabel2);
		 / / Panel.add (f_pdf);
		 panel. add (chooser);
		 panel. add (button);
		 button. addActionListener (new click (nom_rep, chooser));
		
		 / * 
			  * Display and dump the buffer panel? 
		  *
		 setContentPane (panel);
		 setSize (800, 100);
		 setVisible (true);
	 )
	
	 public static void main (String [] args)
	 (
		 JFrame frame = new swing2 ();
	 )
	
 )

 click class implements ActionListener 
 (
	 JTextField n_rep;
	 JFileChooser f;
	 / / String n_rep;
	 / / String f;
	 String cmd_create;
	
	 click (JTextField c_1, c_2 JFileChooser) 
	 (
		 / / System.out.println ("You passed" + c_1 + and + c_2 + "as arguments to the object clicked");
		 n_rep = c_1;
		 f = c_2;
	 )
	
	 public void actionPerformed (ActionEvent e) 
	 (
		 / / System.out.println ("The button was clicked");
		 System. Out. System.out.println ("Here are the input values, pos:" + n_rep. GetText () + "pdf and" getSelectedFile + f (). GetName () + "");
		 cmd_create = "md" + n_rep. getText () + "";
		 System. Out. System.out.println ("Command:" + cmd_create + "");
		 Runtime. GetRuntime (). Exec (cmd_create);
	 )
 )

[Fox28]

Thanks for the quick reply I have tried the code that you have given but the thing is that it is giving error. Is there any problem with the code that you have given, if there is any mistake then please tell me or is there any configuration setting that I need to do for this thing to execute. Whenever I am trying to compile the code it is giving me error message I will be waiting for your reply. I am desperate to know the solution for this problem.

[Zecho]

Sorry for the mistake that I have done. The exec () method may throw an exception, and it is necessary that you treat that. Just make the following changes in the code.

public void actionPerformed (ActionEvent e)
(
/ / System.out.println ("The button was clicked");
nrep = n_rep. getText ();
fname = f getSelectedFile (). getName ();
/ / System.out.println ("Here are the values entered, pos:" + n_rep.getText () + 'and pdf: "+ f.getSelectedFile (). GetName () +' ');
System. Out. System.out.println ("Here are the values entered, pos:" + + nrep "and pdf:" + fname + "");
cmd_create = "md" nrep + + "";
System. Out. System.out.println ("Command:" + cmd_create + "");

try (
Process proc = Runtime. GetRuntime (). Exec (cmd_create);
)
catch (IOException st) (
System. Out. System.out.println ("Command to create directory not executed"); )
)

[Fox28]

I have done the change that you have said to do and I have check the information related to the dealing with the exception. It helped me to debug the application in a better way. I wrestled with the result that the error message no longer appears but this does not change the fact that although the windows command "md directory" , I mean this piece of code is also not working. Is there any need to change the security setting to run a system command from Java on Windows XP? Thank you in advance for your answers.

[Alondra]

Here is the perfect solution for you problem this will explain you why the control system is not running.

to launch a. Bat

6. / / Cmd = "command.com / cc: \ \ fichier.bat";
    7.                 
    8. / / Win NT (XP. ..): for a start. Bat
    9. / / Cmd = "cmd / cc: \ \ fichier.bat";
   10.  
   11. / / Win 95/98/NT: to launch a. Exe
   12. / / Cmd = "command.com / cc: \ \ windows \ \ notepad.exe";
   13.  
   14. / / Win 95/98/NT: dos command to launch
   15. / / Cmd = "cmd / c copy src.txt dest.txt";
   16.  
   17.  
   18. / / UNIX: To run a script by specifying the shell (sh, bash)
   19. / / Cmd = "/ usr / bin / sh script.sh";
   20.  
   21. / / UNIX: Script to start
   22. / / Cmd = "/ path_complet / tonscript";

So for those who would not understand if you want the exec () function must return a command like this:

  cmd / c md mon_repertoire

I am sure that this will definitely help you to resolve the issue.

[Amma-Watson]

Thank you, for the solution that you have provided it has resolved the issue that I was facing. The tip you given is valid for all orders that must be launched from the command window (which makes it a very logical to launch the executable cmd before placing the order). I have tried this for avoiding the manipulation if it is only to create a directory. Since file class is having the method mkdir.