capture output from c++ in java without returning -

-

i'm working on java swing make gui c++ programming . need c++ program executed in loop without returning java. during loop want capture output without stepping through return 0; in c++ program

can capture output c++ file without returning java gui ?? out , in process in code

 try {                 int out = 0;                 string line;                 outputstream stdin = null;                 inputstream stderr = null;                 inputstream stdout = null;                  // calling exe file                 process process = new processbuilder("unpattern.exe").start();                 stdin = process.getoutputstream();                 stderr = process.geterrorstream();                 stdout = process.getinputstream();                  // input process                 // "write" parms stdin                 line = "1";                 stdin.write(line.getbytes());                 stdin.flush();                  //line = "tx.gettext()" + "\n";                 // stdin.write(line.getbytes());                // stdin.flush();                  stdin.close();                  // output process                 // clean if output in stdout                 bufferedreader brcleanup =                         new bufferedreader(new inputstreamreader(stdout));                  while ((line = brcleanup.readline()) != null) {                     // counter of defects                     system.out.println(line);              } catch (ioexception ex) {                 logger.getlogger(qeyegui3.class.getname()).log(level.severe, null, ex);             }

your while loop missing closing brace:

            // ....             while ((line = brcleanup.readline()) != null) {                 // counter of defects                 system.out.println(line);             // **** should go here         }

i suggest continuously text passed bufferedreader in while loop. if doing within swing application's swingworker, use publish/process method pair update swing gui information transmitted.


Comments

Post a Comment

Popular posts from this blog

c# - Unity IoC Lifetime per HttpRequest for UserStore -

-
i'm trying clean default implementation of accountcontroller.cs comes out of box in new mvc5/owin security implementation. have modified constructor this: private usermanager<applicationuser> usermanager; public accountcontroller(usermanager<applicationuser> usermanager) { this.usermanager = usermanager; } also, have created lifetime manager unity looks this: public class httpcontextlifetimemanager<t> : lifetimemanager, idisposable { private httpcontextbase _context = null; public httpcontextlifetimemanager() { _context = new httpcontextwrapper(httpcontext.current); } public httpcontextlifetimemanager(httpcontextbase context) { if (context == null) throw new argumentnullexception("context"); _context = context; } public void dispose() { this.removevalue(); } public override object get...
Read more

Change the color of an oval at click in Java AWT -

-
i have draw ovals in java, , @ click change color. beginning tried change color after 20 ms, doesn't work. my code is: public class mycomponentnew extends frame { public graphics2d g2d; public mycomponentnew(string title) { super(title); setsize(400, 550); } @override public void paint(graphics g) { this.g2d = (graphics2d) g; this.g2d.setcolor(color.red); this.g2d.filloval(10, 55, 50, 100); } public void changecolor () { this.g2d.setcolor(color.blue); this.g2d.filloval(10, 55, 50, 100); } } and in class main method have: mycomponentnew m; m = new mycomponentnew("fereastra cu baloane"); m.setvisible(true); m.addwindowlistener(new windowadapter() { @override public void windowclosing(windowevent we) { system.exit(0); } }); try { thread.sleep(20); } catch(interruptedexception e) {} m.changecolor(); the color of oval remains red. ...
Read more

I am trying to solve the error message 'incompatible ranks 0 and 1 in assignment' in a fortran 95 program. -

-
i writing program in fortran find velocity of parachuting person in relation time. keep getting error can't fix. new programming , appreciated. the error is v(i+1)=v(i)+[32-((c*v(i)*v(i))/m)]*(h) 1 error: incompatible ranks 0 , 1 in assignment @ (1) and program is program para integer :: real :: v(11) !velocity real :: q !initial velocity real :: h !time step real :: c !drag coefficient real :: m !mass ! gravity equal 32 ft/s^2 write (*,*)'enter time step' read(*,*)h write(*,*)'enter initial velocity' read(*,*)q write(*,*)'enter drag coefficient' read(*,*)c write(*,*)'enter mass' read(*,*)m i=1,10 ! 1 10, 1 being interval. end v(i+1)=v(i)+[32-((c*v(i)*v(i))/m)]*(h) q=v(1) end program you cannot use [] normal parenthesis in expressions. array constructor, [ items ] means array items elements. end do should after line.
Read more