Hi' this is really makes me feel so upset. Why every time i try to execute WindowsExec file.
There's no error in code but the output not correctly.



WindowsExec.java :

			

			public class WindowsExec
			

			{
			

			response std_out,std_err;
			

			DataOutputStream doStream;
			

			outputer std_in;
			

			

			public WindowsExec()
			

			{
			

			try
			

			{
			

			String[] cmd = new String[]{"cmd.exe","/C","java","maintest"};
			

			Runtime rt = Runtime.getRuntime();
			

			

			Process proc = rt.exec(cmd);
			

			

			std_out = new response(proc.getInputStream(),System.out);
			

			std_err = new response(proc.getErrorStream(),System.err);
			

			

			doStream = new DataOutputStream(proc.getOutputStream());
			

			std_in = new outputer(doStream);
			

			

			std_out.start();
			

			std_err.start();
			

			std_in.start();
			

			

			int exitVal = proc.waitFor();
			

			System.out.println("ExitValue: " + exitVal);
			

			

			proc.destroy();
			

			doStream.close();
			

			}
			

			catch (Throwable t)
			

			{
			

			t.printStackTrace();
			

			}
			

			}
			

			public static void main(String args[])
			

			{
			

			new WindowsExec();
			

			}
			

			}
			

		

response.java :

			

			class outputer extends Thread
			

			{
			

			OutputStream write;
			

			BufferedReader bfr;
			

			public outputer(OutputStream write)
			

			{
			

			try
			

			{
			

			this.write = write;
			

			

			}
			

			catch(Exception e)
			

			{
			

			e.printStackTrace();
			

			}
			

			}
			

			public void run()
			

			{
			

			try
			

			{
			

			bfr = new BufferedReader(new InputStreamReader(System.in));
			

			String input = null;
			

			

			input = bfr.readLine();
			

			write.write(input.getBytes());
			

			write.flush();
			

			

			write.close();
			

			bfr.close();
			

			}
			

			catch(Exception e)
			

			{
			

			e.printStackTrace();
			

			}
			

			}
			

			}
			

		

maintest.java :

			

			public class maintest
			

			{
			

			

			public maintest()
			

			{
			

			try
			

			{
			

			BufferedReader bfr = new BufferedReader(new InputStreamReader(System.in));
			

			

			System.out.print("Insert : ");
			

			String getWord = bfr.readLine();
			

			

			System.out.println(getWord);
			

			}
			

			catch(Exception e)
			

			{
			

			e.printStackTrace();
			

			}
			

			}
			

			public static void main(String[] args)
			

			{
			

			new maintest();
			

			}
			

			}
			

		

This is the illustration :

1. Execute WindowsExec

2. Maintest executed from WindowsExec. (see WindowsExec source).

3. Display the output.



The output should be like this : (see maintest source to check)

1. Print Insert : and wait input from user.

2. User write some input and press enter.

3. Read input from user and display it.

4. Program terminate.



But what i got, the output are like this : (this is not correctly)

1. Wait input from user. (see maintest source,the firstline should be print "Insert :",not waiting some input).

2. User write some input and press enter

3. print Insert : and read input from user and display it.
4. Program terminate.



Why the output become like that? (Conversation between WindowsExec and maintest not correctly).

Insert : should appear in the first line of the output.



How to get the right conversation between WindowsExec and maintest?



I hope my question easy to understand.



Thanks....    <<Less