java - Sudoku game, serialization issue -
i creating sudoku game , trying provide options save, save as, , open games. using jfilechooser this. able save (or "save as") when try open saved file, error. new programming , i'm hoping spot issue , educate me on how read in contents of sudoku board when saving (as how deal re-creating sudoku board when open file). hear there easier way deal using inputstream/outputstream instead of reader/writer...
here code inner class implements (i don't know if there's way post entire class without exceeding character limit text box.):
// inner class provides jmenubar object @ top of // board class menuattop extends jmenubar implements actionlistener{ // sudokumain2 object dealing private sudokumain2 main; // "file" menu private jmenu filemenu; // "new game" option private jmenuitem newgame; // "open" option private jmenuitem open; // "save" option private jmenuitem save; // "save as" option private jmenuitem saveas; // "reset" option private jmenuitem reset; // "quit" option private jmenuitem quit; // ability choose files private jfilechooser choose; // saved file // // compiler not allow "static" keyword private file filesaved = null; private object opener; // jdialog object create dialog box prompt // user new game information private jdialog createnewwin; /** * constructs menuattop object. * * @param m sudokumain2 object referred to. */ public menuattop(final sudokumain2 m) { main = m; opener = null; choose = new jfilechooser(); // instantiate , bind reference filemenu = new jmenu("file"); add(filemenu); // instantiate , bind reference newgame = new jmenuitem("new game"); newgame.setaccelerator(keystroke.getkeystroke(keyevent.vk_n, actionevent.ctrl_mask)); filemenu.add(newgame); newgame.addactionlistener(this); open = new jmenuitem("open"); open.setaccelerator(keystroke.getkeystroke(keyevent.vk_o, actionevent.ctrl_mask)); filemenu.add(open); // add action listener "open" option open.addactionlistener(this); save = new jmenuitem("save"); save.setaccelerator(keystroke.getkeystroke(keyevent.vk_s, actionevent.ctrl_mask)); filemenu.add(save); // //save.setenabled(false); // add action listener "save" option save.addactionlistener(this); saveas = new jmenuitem("save as"); saveas.setaccelerator(keystroke.getkeystroke(keyevent.vk_a, actionevent.ctrl_mask)); filemenu.add(saveas); // add action listener "save as" option saveas.addactionlistener(this); reset = new jmenuitem("reset"); reset.setaccelerator(keystroke.getkeystroke(keyevent.vk_r, actionevent.ctrl_mask)); filemenu.add(reset); // add action listener "reset" option reset.addactionlistener(this); quit = new jmenuitem("quit"); quit.setaccelerator(keystroke.getkeystroke(keyevent.vk_q, actionevent.ctrl_mask)); filemenu.add(quit); // add action listener "quit" option quit.addactionlistener(this); } public void actionperformed(actionevent e) { if(e.getsource().equals(quit)) { closeprompt(); //main.win.dispose(); } else if(e.getsource().equals(reset)) { int n = joptionpane.showconfirmdialog(main.win, "any player values will" + " lost. proceed?", "warning!", 2); if(n == joptionpane.ok_option) { main.board.reset(); main.view.repaint(); } } else if(e.getsource().equals(saveas)) { saveas(); } else if(e.getsource().equals(save)) { if(filesaved == null) { saveas(); } else { try { board.writetostream(new fileoutputstream(filesaved)); // main.board.setdirty(false); } catch (exception ex) { joptionpane.showmessagedialog(main.win, "error saving file."); } } } else if(e.getsource().equals(open)) { int returnval = choose.showopendialog(main.win); if(returnval == jfilechooser.approve_option) { boolean error = false; file openfile = choose.getselectedfile(); try { fileinputstream fin = new fileinputstream(openfile); objectinputstream ois = new objectinputstream(fin); opener = ois.readobject(); } catch (exception ex) { joptionpane.showmessagedialog(main.win, "error opening file."); error = true; } if(opener != null && opener instanceof sudokubase){ main.west.remove(main.symbols); main.east.remove(main.view); //add in state information new board main.south.remove(main.rowcolregstates); main.view = new sudokuview((sudokubase) opener); main.symbols = new setsymbols(main.view); //add in state information new board main.rowcolregstates = new showstates(main.view); main.west.add(main.symbols); main.east.add(main.view); //add in state information new board main.south.add(main.rowcolregstates); main.win.requestfocus(); filesaved = openfile; // main.board.setdirty(false); } else { if(error) { joptionpane.showmessagedialog(main.win, " incorrect file type!"); } } } // else: user cancelled } else if(e.getsource().equals(newgame)) { setenabled(false); // create dialog box prompting new board information createnewwin = new dialog1(main, "create new board", true); // make visible createnewwin.setvisible(true); filesaved = null; } } // method prompts user choose file save to, // , saves file. private int saveas() { boolean saveerror; int rtn = choose.showsavedialog(main.win); if(rtn == jfilechooser.approve_option) { saveerror = false; file filesaveas = choose.getselectedfile(); try { board.writetostream(new fileoutputstream(filesaveas)); } catch (exception e) { joptionpane.showmessagedialog(main.win, "error saving file."); saveerror = true; } if(!saveerror) { filesaved = filesaveas; // main.board.setdirty(false); } } return rtn; } /** * asks user if want save before closing if changes made. */ private void closeprompt() { if(true) { //board.isdirty()) { int n = joptionpane.showconfirmdialog(main.win, "save game?"); if(n == joptionpane.yes_option) { int saved = saveas(); if(saved != jfilechooser.cancel_option){ main.win.dispose(); } } else if(n == joptionpane.no_option) { main.win.dispose(); } } else main.win.dispose(); } }
here first portion of sudokumain class (i accidentally put "sudokumain2" instead of "sudokumain" in menuattop, ignore 2):
// allow short name access following classes import java.awt.*; import java.awt.event.*; import javax.swing.*; import java.util.*; import java.io.*; public class sudokumain extends jcomponent { /** * application method. * * @param args command-line arguments. */ public static void main(string[] args) { new sudokumain(); } // field refers sudokubase class access information // of board. private sudokubase board; // field refers sudokuview object access information // , provide output private sudokuview view; // window components contained in private jframe win; // center jpanel object in window private jpanel center; // left jpanel object in window private jpanel west; // right jpanel object in window private jpanel east; // bottom jpanel object in window private jpanel south; // jpanel object hold graphic "buttons" private jpanel symbols; // jpanel object show "states" of sudoku board private jpanel rowcolregstates; // first set-up window (cannot changed once // instantiated) private final dialog1 setwin1; /** * constructs sudokumain object. */ public sudokumain() { // start game board = makeboard(); view = new sudokuview(board); win = new jframe("sudoku game"); center = new jpanel(); west = new jpanel(); east = new jpanel(); south = new jpanel(); // graphic "buttons" current sudoku board symbols = new setsymbols(view); // "states" of current sudoku board rowcolregstates = new showstates(view); // first set-up window setwin1 = new dialog1(this, "new game", true); // create menu bar final menuattop menubar = new menuattop(this); win.setjmenubar(menubar); // display game mode jlabel mode = new jlabel("normal play mode"); mode.sethorizontalalignment(jlabel.center); font modefont = new font("arial", font.bold, 14); mode.setfont(modefont); // // set selected cell @ (0, 0) // view.setselected(0, 0); // add window focus listener win.addwindowfocuslistener(new windowfocuslistener() { public void windowgainedfocus(windowevent e) { win.pack(); // set selected cell @ (0, 0) view.setselected(0, 0); } public void windowlostfocus(windowevent e) { } }); // add window listener win.addwindowlistener(new windowadapter() { public void windowclosing(windowevent e) { menubar.closeprompt(); } }); win.setlayout(new borderlayout()); west.setlayout(new borderlayout()); east.setlayout(new borderlayout()); center.setlayout(new flowlayout()); west.add(symbols); east.add(view, borderlayout.center); south.add(rowcolregstates); center.add(west); center.add(east); win.add(south, borderlayout.north); win.add(center, borderlayout.center); win.add(mode, borderlayout.south); win.setdefaultcloseoperation(jframe.dispose_on_close); win.pack(); win.setvisible(true); } // inner class constructs graphic "buttons" set desired // cells of board class sudokucontrolbutton extends jpanel { // row of selected cell private int selrow; // column of selected cell private int selcol; // value corresponds desired symbol private int value; /** * constructs sudokucontrolbutton object; graphic "button" * control board. * * @param view sudokuview object controlled. * @param v value corresponds desired symbol. */ public sudokucontrolbutton(final sudokuview view, int v) { // set characteristics of graphic "button" setpreferredsize(new dimension(50, 50)); setbackground(color.light_gray); value = v; addmouselistener(new mouselistener() { /** * method selects "button" , puts in focus when mouse * clicked on it. * * @param event captures information on mouse button being * clicked (pressed , released) on component. */ public void mouseclicked(mouseevent e) { selrow = view.getselectedrow(); selcol = view.getselectedcolumn(); if(!board.isgiven(selrow, selcol)) { board.setvalue(selrow, selcol, value); view.new sudokucell(selrow, selcol, board); // set "highlighted" color setbackground(color.white); view.repaint(); } else { // have system beep sound gettoolkit().beep(); } repaint(); } /** * method handles behavior when mouse enters graphic * "button". * * @param event captures information on mouse button being * entered on component. */ public void mouseentered(mouseevent e){ // set "highlighted" color setbackground(color.white); repaint(); } /** * method handles behavior when mouse exits graphic * "button". * * @param event captures information on mouse button being * exited component. */ public void mouseexited(mouseevent e){ // set default color sudokucontrolbutton button = (sudokucontrolbutton) e.getsource(); setbackground(color.light_gray); repaint(); } /** * method handles behavior when mouse pressed on * graphic "button". * * @param event captures information on mouse button being * pressed on component. */ public void mousepressed(mouseevent e){ // set "active" color setbackground(color.yellow); repaint(); } /** * method handles behavior when mouse released on * graphic "button". * * @param e captures information on mouse button being * released on component. */ public void mousereleased(mouseevent e){ } }); } /** * method draws graphic "button" associated * each numeric value, 0 12. * * @param g drawing mechanism. */ public void paintcomponent(graphics g) { super.paintcomponent(g); switch(value) { case 0: drawsymbol(g, 0); break; case 1: drawsymbol(g, 1); break; case 2: drawsymbol(g, 2); break; case 3: drawsymbol(g, 3); break; case 4: drawsymbol(g, 4); break; case 5: drawsymbol(g, 5); break; case 6: drawsymbol(g, 6); break; case 7: drawsymbol(g, 7); break; case 8: drawsymbol(g, 8); break; case 9: drawsymbol(g, 9); break; case 10: drawsymbol(g, 10); break; case 11: drawsymbol(g, 11); break; case 12: drawsymbol(g, 12); break; } } /** * method draws symbol corresponds * specified value (0-12). * * @param g drawing mechanism. * @param value specified value. */ public void drawsymbol(graphics g, int value) { if(value < 0 || value > 12) { string msg = "value cannot less 0 or greater 12."; throw new illegalargumentexception(msg); } // enable drawing "thick" lines graphics2d g2 = (graphics2d) g; g2.setstroke(new basicstroke(3)); switch(value) { case 0: // draw borders g.drawrect(0, 0, 50, 50); break; case 1: // draw borders g.drawrect(0, 0, 50, 50); // draw symbol g2.drawline(5, 5, 5, 45); break; case 2: // draw borders g.drawrect(0, 0, 50, 50); // draw symbol g2.drawline(5, 5, 5, 45); g2.drawline(10, 5, 10, 45); break; case 3: // draw borders g.drawrect(0, 0, 50, 50); // draw symbol g2.drawline(5, 5, 5, 45); g2.drawline(10, 5, 10, 45); g2.drawline(15, 5, 15, 45); break; case 4: // draw borders g.drawrect(0, 0, 50, 50); // draw symbol g2.drawline(5, 5, 5, 45); g2.drawline(10, 5, 10, 45); g2.drawline(15, 5, 15, 45); g2.drawline(20, 5, 20, 45); break; case 5: // draw borders g.drawrect(0, 0, 50, 50); // draw symbol g2.drawline(5, 5, 5, 45); g2.drawline(10, 5, 10, 45); g2.drawline(15, 5, 15, 45); g2.drawline(20, 5, 20, 45); g2.drawline(25, 5, 25, 45); break; case 6: // draw borders g.drawrect(0, 0, 50, 50); // draw symbol g2.drawline(5, 5, 5, 45); g2.drawline(10, 5, 10, 45); g2.drawline(15, 5, 15, 45); g2.drawline(20, 5, 20, 45); g2.drawline(25, 5, 25, 45); g2.drawline(30, 5, 30, 45); break; case 7: // draw borders g.drawrect(0, 0, 50, 50); // draw symbol g2.drawline(5, 5, 5, 20); g2.drawline(10, 5, 10, 20); g2.drawline(15, 5, 15, 20); g2.drawline(20, 5, 20, 20); g2.drawline(25, 5, 25, 20); g2.drawline(30, 5, 30, 20); g2.drawline(5, 30, 5, 45); break; case 8: // draw borders g.drawrect(0, 0, 50, 50); // draw symbol g2.drawline(5, 5, 5, 20); g2.drawline(10, 5, 10, 20); g2.drawline(15, 5, 15, 20); g2.drawline(20, 5, 20, 20); g2.drawline(25, 5, 25, 20); g2.drawline(30, 5, 30, 20); g2.drawline(5, 30, 5, 45); g2.drawline(10, 30, 10, 45); break; case 9: // draw borders g.drawrect(0, 0, 50, 50); // draw symbol g2.drawline(5, 5, 5, 20); g2.drawline(10, 5, 10, 20); g2.drawline(15, 5, 15, 20); g2.drawline(20, 5, 20, 20); g2.drawline(25, 5, 25, 20); g2.drawline(30, 5, 30, 20); g2.drawline(5, 30, 5, 45); g2.drawline(10, 30, 10, 45); g2.drawline(15, 30, 15, 45); break; case 10: // draw borders g.drawrect(0, 0, 50, 50); // draw symbol g.drawline(5, 5, 5, 20); g.drawline(10, 5, 10, 20); g.drawline(15, 5, 15, 20); g.drawline(20, 5, 20, 20); g.drawline(25, 5, 25, 20); g.drawline(30, 5, 30, 20); g.drawline(5, 30, 5, 45); g.drawline(10, 30, 10, 45); g.drawline(15, 30, 15, 45); g.drawline(20, 30, 20, 45); break; case 11: // draw borders g.drawrect(0, 0, 50, 50); // draw symbol g.drawline(5, 5, 5, 20); g.drawline(10, 5, 10, 20); g.drawline(15, 5, 15, 20); g.drawline(20, 5, 20, 20); g.drawline(25, 5, 25, 20); g.drawline(30, 5, 30, 20); g.drawline(5, 30, 5, 45); g.drawline(10, 30, 10, 45); g.drawline(15, 30, 15, 45); g.drawline(20, 30, 20, 45); g.drawline(25, 30, 25, 45); break; case 12: // draw borders g.drawrect(0, 0, 50, 50); // draw symbol g.drawline(5, 5, 5, 20); g.drawline(10, 5, 10, 20); g.drawline(15, 5, 15, 20); g.drawline(20, 5, 20, 20); g.drawline(25, 5, 25, 20); g.drawline(30, 5, 30, 20); g.drawline(5, 30, 5, 45); g.drawline(10, 30, 10, 45); g.drawline(15, 30, 15, 45); g.drawline(20, 30, 20, 45); g.drawline(25, 30, 25, 45); g.drawline(30, 30, 30, 45); break; } } } // inner class provides jmenubar object @ top of // board class menuattop extends jmenubar implements actionlistener{ // sudokumain object dealing private sudokumain main; // "file" menu private jmenu filemenu; // "new game" option private jmenuitem newgame; // "open" option private jmenuitem open; // "save" option private jmenuitem save; // "save as" option private jmenuitem saveas; // "reset" option private jmenuitem reset; // "quit" option private jmenuitem quit; // ability choose files private jfilechooser choose; // saved file // // compiler not allow "static" keyword private file filesaved = null; private object opener; // jdialog object create dialog box prompt // user new game information private jdialog createnewwin; /** * constructs menuattop object. * * @param m sudokumain object referred to. */ public menuattop(final sudokumain m) { main = m; opener = null; choose = new jfilechooser(); // instantiate , bind reference filemenu = new jmenu("file"); add(filemenu); // instantiate , bind reference newgame = new jmenuitem("new game"); newgame.setaccelerator(keystroke.getkeystroke(keyevent.vk_n, actionevent.ctrl_mask)); filemenu.add(newgame); newgame.addactionlistener(this); open = new jmenuitem("open"); open.setaccelerator(keystroke.getkeystroke(keyevent.vk_o, actionevent.ctrl_mask)); filemenu.add(open); // add action listener "open" option open.addactionlistener(this); save = new jmenuitem("save"); save.setaccelerator(keystroke.getkeystroke(keyevent.vk_s, actionevent.ctrl_mask)); filemenu.add(save); // add action listener "save" option save.addactionlistener(this); saveas = new jmenuitem("save as"); saveas.setaccelerator(keystroke.getkeystroke(keyevent.vk_a, actionevent.ctrl_mask)); filemenu.add(saveas); // add action listener "save as" option saveas.addactionlistener(this); reset = new jmenuitem("reset"); reset.setaccelerator(keystroke.getkeystroke(keyevent.vk_r, actionevent.ctrl_mask)); filemenu.add(reset); // add action listener "reset" option reset.addactionlistener(this); quit = new jmenuitem("quit"); quit.setaccelerator(keystroke.getkeystroke(keyevent.vk_q, actionevent.ctrl_mask)); filemenu.add(quit); // add action listener "quit" option quit.addactionlistener(this); } public void actionperformed(actionevent e) { if(e.getsource().equals(newgame)) { setenabled(false); // create dialog box prompting new board information createnewwin = new dialog1(main, "create new board", true); // make visible createnewwin.setvisible(true); filesaved = null; } else if(e.getsource().equals(open)) { int returnval = choose.showopendialog(main.win); if(returnval == jfilechooser.approve_option) { boolean error = false; file openfile = choose.getselectedfile(); try { fileinputstream fin = new fileinputstream(openfile); objectinputstream ois = new objectinputstream(fin); opener = ois.readobject(); } catch (exception exc) { joptionpane.showmessagedialog(main.win, "error opening file."); error = true; } // "opener" reads , of type sudokubase if(opener != null && opener instanceof sudokubase){ main.west.remove(main.symbols); main.east.remove(main.view); main.south.remove(main.rowcolregstates); main.view = new sudokuview((sudokubase) opener); main.symbols = new setsymbols(main.view); main.rowcolregstates = new showstates(main.view); main.west.add(main.symbols); main.east.add(main.view); main.south.add(main.rowcolregstates); main.win.requestfocus(); filesaved = openfile; } else { if(error) { joptionpane.showmessagedialog(main.win, "incorrect file type."); } } } } else if(e.getsource().equals(save)) { if(filesaved == null) { saveasprompt(); } else { try { board.writetostream(new fileoutputstream(filesaved)); } catch (exception exc) { joptionpane.showmessagedialog(main.win, "error saving file."); } } } else if(e.getsource().equals(saveas)) { saveasprompt(); } else if(e.getsource().equals(reset)) { int n = joptionpane.showconfirmdialog(main.win, "any player values will" + " lost. proceed?", "warning!", 2); if(n == joptionpane.ok_option) { main.board.reset(); main.view.repaint(); } } else if(e.getsource().equals(quit)) { closeprompt(); } } // method prompts user choose file save to, // , saves file. private int saveasprompt() { boolean saveerror; int rtn = choose.showsavedialog(main.win); if(rtn == jfilechooser.approve_option) { saveerror = false; file filesaveas = choose.getselectedfile(); try { board.writetostream(new fileoutputstream(filesaveas)); } catch (exception e) { joptionpane.showmessagedialog(main.win, "error saving file."); saveerror = true; } if(!saveerror) { filesaved = filesaveas; } } return rtn; } // method prompts user whether want save before // closing, if changes occurred. private void closeprompt() { if(true) { int n = joptionpane.showconfirmdialog(main.win, "save game?"); if(n == joptionpane.yes_option) { int saved = saveasprompt(); if(saved != jfilechooser.cancel_option){ main.win.dispose(); } } else if(n == joptionpane.no_option) { main.win.dispose(); } } else { // no changes made main.win.dispose(); } } } ...
Comments
Post a Comment