Different reults of execution of jar from terminal and by double clicking

[akki maha]

Hi All,

I have created a test.jar file that will execute "pwd" command and will write it to pathFile. I am able to run the test.jar by double clicking on it. location of test.jar is "/home/akashm/Desktop/IDE/test/test.jar".Now I have following problems-

1. If I run test.jar from terminal i.e.
$java -jar test.jar
I get "/home/akashm/Desktop/IDE/test/" as output. This is correct.

2. If I run test.jar by double clicking it then I get
"/home/akashm" as output.

Does anyone has any idea of ambiguity in execution of test.jar file?

Please help me out.


-akash

[Leandro Coutinho]

could you post the code?

[akki maha]

Hi,

I have created a simple gui, that has password field and "ok" button. Following code is executed when OK button is pressed.

  if (OK.equals(cmd)) {
			char[] pass = passwordField.getPassword();
			String input = new String(pass);
			try {
				String osName = System.getProperty("os.name");
				String pwdOutput;
				Process whoami = Runtime.getRuntime().exec("whoami");
				BufferedReader userStream = new BufferedReader(
						new InputStreamReader(whoami.getInputStream()));
				String username = userStream.readLine();

				File commandFile = null;
				File pathFile = null;

				Process pwdproc = Runtime.getRuntime().exec("pwd");
				BufferedReader pwdbr = new BufferedReader(
						new InputStreamReader(pwdproc.getInputStream()));
				String pwdOut = pwdbr.readLine();

				if (username.equals("root")) {
					if (osName.contains("Mac")) {
						commandFile = new File("/commandFile");
						pathFile = new File("/pathFile");

					} else {
						commandFile = new File("/commandFile");
						pathFile = new File("/pathFile");
					}
				} else {
					if (osName.contains("Mac")) {
						commandFile = new File("/Users/" + username
								+ "/commandFile");
						pathFile = new File("/Users/" + username + "/pathFile");
					} else {
						commandFile = new File("/home/" + username
								+ "/commandFile");
						pathFile = new File("/home/" + username + "/pathFile");
					}
				}

				commandFile.createNewFile();
				pathFile.createNewFile();

				FileWriter procstream = new FileWriter(pathFile, true);
				BufferedWriter procout = new BufferedWriter(procstream);
				procout.write(pwdOut);
				procout.write("\n");
				procout.close();

				FileWriter fstream = new FileWriter(commandFile, true);
				BufferedWriter out = new BufferedWriter(fstream);

				if (osName.contains("Mac")) {
					out.write("echo " + input + " | sudo -S " + pwdOut
							+ "/.Junide.app/Contents/MacOS/Junide");
				} else {
					out.write("echo " + input + " | sudo -S " + pwdOut
							+ "/.Junide");
					/*out.write("echo " + input + " | sudo -S ./.Junide");*/
				}
				out.write("\n");
				out.close();

				if (username.equals("root")) {
					if (osName.contains("Mac")) {
						Runtime.getRuntime().exec("chmod 777 /commandFile");
						Runtime.getRuntime().exec("/commandFile");
						Thread.sleep(1000);
						/*Runtime.getRuntime().exec("rm /commandFile");
						Runtime.getRuntime().exec("rm /pathFile");*/

					} else {
						Runtime.getRuntime()
								.exec("chmod 777 /commandFile");
						Runtime.getRuntime().exec("/commandFile");
						Thread.sleep(1000);
						/*Runtime.getRuntime().exec("rm /commandFile");
						Runtime.getRuntime().exec("rm /pathFile");*/

					}

				} else {
					if (osName.contains("Mac")) {
						Runtime.getRuntime()
								.exec(
										"chmod 777 /Users/" + username
												+ "/commandFile");
						Runtime.getRuntime().exec(
								"/Users/" + username + "/commandFile");
						Thread.sleep(1000);
						/*Runtime.getRuntime().exec(
								"rm /Users/" + username + "/commandFile");
						Runtime.getRuntime().exec(
								"rm /Users/" + username + "/pathFile");*/
						

					} else {
						Runtime.getRuntime().exec(
								"chmod 777 /home/" + username + "/commandFile");
						Runtime.getRuntime().exec(
								"/home/" + username + "/commandFile");
						Thread.sleep(1000);
						/*Runtime.getRuntime().exec(
								"rm /home/" + username + "/commandFile");
						Runtime.getRuntime().exec(
								"rm /home/" + username + "/pathFile");*/

					}
				}
			} catch (IOException e1) {
				// TODO Auto-generated catch block
				e1.printStackTrace();
			} catch (InterruptedException aa) {
				// TODO Auto-generated catch block
				aa.printStackTrace();
			}
		}

		resetFocus();
		controllingFrame.dispose();
	}  

[Leandro Coutinho]

I'm not sure, but add this procout.flush(); before procout.close();

[Leandro Coutinho]

print pwdOut to see what you get

[Leandro Coutinho]

Same problem with me. If I run the jar through the command line I get the correct result, but clicking on the jar I get /home/leandro

import java.io.*;
import javax.swing.*;

public class RuntimeExecTest3 extends JFrame
{
	public static void main(String[] args) throws IOException
	{		
		File file = new File("somefile.txt");
		file.createNewFile();
		String path = file.getCanonicalPath();
		System.out.println(path);
		
		System.out.println(System.getProperty("user.dir"));
		
		RuntimeExecTest3 app = new RuntimeExecTest3();
		app.setDefaultCloseOperation(EXIT_ON_CLOSE);
		app.setSize(300, 300);
		
		app.add(new JLabel(path));
		
		app.setVisible(true);
	}			
}

[akki maha]

I got the solution for this problem just now,

 URI s = PasswordDemo.class.getProtectionDomain().getCodeSource().getLocation().toURI();
				 System.out.println(s.toString());   

This will give the exact location of the file from where it is getting executed.


-akki

[Leandro Coutinho]

akki maha wrote:I got the solution for this problem just now,

 URI s = PasswordDemo.class.getProtectionDomain().getCodeSource().getLocation().toURI();
				 System.out.println(s.toString());   

This will give the exact location of the file from where it is getting executed.

Thanks for posting the solution akki! =)
You can use s.getPath() instead of s.toString()
I made a little hack to remove the name of the jar:

import java.io.*;
import javax.swing.*;
import java.net.*;

public class JarDirectoryTest extends JFrame
{
	public static void main(String[] args)
			throws IOException, URISyntaxException
	{		
		URI s = JarDirectoryTest.class.getProtectionDomain().getCodeSource().getLocation().toURI();  
		String path = s.getPath();
		System.out.println(path); // /home/leandro/dev/java/classes/jartest.jar
		// little hack to remove the name of the jar
		path = new StringBuilder(path).reverse().toString();
		path = new StringBuilder(path.substring(path.indexOf('/'))).reverse().toString();
		
		File file = new File(path, "myFile.txt");
		file.createNewFile();		
		
		JarDirectoryTest app = new JarDirectoryTest();
		app.setDefaultCloseOperation(EXIT_ON_CLOSE);
		app.setSize(300, 300);
		
		app.add(new JLabel(path));
		
		app.setVisible(true);
	}			
}

And it works like a charm!
But I'm frustrated about this problem. Why when we execute the jar file by clicking on it, it doesn't get the path where the jar file is located? Why does It only show /home/<user-name>?

Someone help us!! Please.