swing - Java Craps Game Crashes -

i trying finish java craps game using gui, every time hit "play craps" , program freezes up, , doesn't compute. i'm assuming it's problem game logic, can out? thanks!

import javax.swing.*; import java.awt.*; import java.awt.event.*;  public class mcgovernjavaprogrammingassignment8bcrapsgui extends jframe {  private static final int width=400; private static final int height=300;  // declare jframe components: private  jbutton jbutplaycraps, jbutclear, jbutexit;  private playbuttonhandler playhandler; private clearbuttonhandler clearhandler; private exitbuttonhandler exithandler;  private jscrollpane scrollingresult;  private jtextarea jtaoutput;  private jpanel jpnltop = new jpanel(); private jpanel jpnlcenter = new jpanel(); private jpanel jpnlbottom = new jpanel();  // constructor  public mcgovernjavaprogrammingassignment8bcrapsgui() {      //set title , size:     settitle("matthew mcgovern - java craps game!");     setsize(width, height);      //instantiate jtextarea     jtaoutput = new jtextarea(10,1);     scrollingresult = new jscrollpane(jtaoutput);      //instantiate , register play button:     jbutplaycraps = new jbutton("play craps!");     playhandler = new playbuttonhandler();     jbutplaycraps.addactionlistener(playhandler);      //instantiate , register clear button:     jbutclear = new jbutton("clear");     clearhandler = new clearbuttonhandler();     jbutclear.addactionlistener(clearhandler);      //instantiate , register exit button:     jbutexit = new jbutton("exit");     exithandler = new exitbuttonhandler();     jbutexit.addactionlistener(exithandler);      //assemble jpanels:     jpnltop.setlayout(new gridlayout(1, 2));     //this input box went....delete?      jpnlcenter.setlayout(new gridlayout(1,1));     jpnlcenter.add(scrollingresult);      jpnlbottom.setlayout(new gridlayout(1, 3));     jpnlbottom.add(jbutplaycraps);     jpnlbottom.add(jbutclear);     jpnlbottom.add(jbutexit);      //start add components jframe     container pane = getcontentpane();     pane.setlayout(new borderlayout());      pane.add(jpnltop, borderlayout.north);     pane.add(jpnlcenter, borderlayout.center);     pane.add(jpnlbottom, borderlayout.south);      //show jframe , set "x" button close program:     setvisible(true);     setdefaultcloseoperation(exit_on_close);      //set jframe center:     setlocationrelativeto(null);      } // end constructor.  // play craps button event handler:  private class playbuttonhandler implements actionlistener {     public void actionperformed(actionevent e)     {         {             //declare method variables.              int idice1,                 idice2,                 iadddice,                 iadddiceroll2 = 0,                 igameresults;              string sresults = "";              //craps game logic.                  //roll dice.                 idice1 = (int) (math.random() *6 + 1);                 idice2 = (int) (math.random() *6 + 1);                  //add dice together.                 iadddice = idice1 + idice2;                  //determine results.                  if (iadddice == 2 || iadddice == 3 || iadddice == 12)                 {igameresults = 1;                 sresults = "sorry, lost.";}                  else if (iadddice == 7 || iadddice == 11)                 {igameresults = 0;                 sresults = "congratulations, won!";}                  else                 {igameresults = 2;                 sresults = "point " + iadddice + "\n";                 idice1 = (int) (math.random() *6+1);                 idice2 = (int) (math.random() *6+1);                 iadddiceroll2 = idice1 + idice2;                 sresults.concat("you rolled " + iadddiceroll2 + "\n");                 while (iadddiceroll2 != 7)                     if (iadddice == iadddiceroll2)                         {sresults.concat("congratulations, win!");                         break;                         }else{                             sresults = "point " + iadddice + "\n";                         }                 idice1 = (int) (math.random() *6+1);                 idice2 = (int) (math.random() *6+1);                 iadddiceroll2 = idice1 + idice2;                 sresults.concat("you rolled " + iadddiceroll2 + "\n");                         }                 if (iadddiceroll2 == 7)                 {sresults = "sorry, lost";}                   jtaoutput.settext(sresults);           }     } }   // clear button handler:  private class clearbuttonhandler implements actionlistener {     public void actionperformed(actionevent e)     {         jtaoutput.settext("");     } }  // exit button handler:  private class exitbuttonhandler implements actionlistener {     public void actionperformed(actionevent e)     {         system.exit(0);     } }  public static void main(string args[]) {     mcgovernjavaprogrammingassignment8bcrapsgui cs = new mcgovernjavaprogrammingassignment8bcrapsgui(); } 

}

this because while loop infinite. loop not modify iadddiceroll2, never going equal 7. forgot braces around body of loop?

i talking loop:

while (iadddiceroll2 != 7)     if (iadddice == iadddiceroll2)         {sresults.concat("congratulations, win!");         break;     }else{         sresults = "point " + iadddice + "\n";     } 

and think meant this:

while (iadddiceroll2 != 7) {     if (iadddice == iadddiceroll2)         {sresults.concat("congratulations, win!");         break;     }else{         sresults = "point " + iadddice + "\n";     }     idice1 = (int) (math.random() *6+1);     idice2 = (int) (math.random() *6+1);     iadddiceroll2 = idice1 + idice2;     sresults.concat("you rolled " + iadddiceroll2 + "\n"); }