Java (swing) toolbar not showing -
i have been following tutorial:
java toolbar tutorial
when tried insert toolbar gui, doesn't show up. can kindly give me advice on do? code far this:
import javax.swing.box; import java.awt.container; import java.awt.eventqueue; import java.awt.event.actionevent; import java.awt.event.actionlistener; import javax.swing.grouplayout; import javax.swing.jbutton; import javax.swing.jcomponent; import javax.swing.jframe; import javax.swing.jpanel; import java.awt.event.keyevent; import javax.swing.imageicon; import javax.swing.jmenu; import javax.swing.jmenubar; import javax.swing.jmenuitem; import javax.swing.abstractaction; import static javax.swing.action.mnemonic_key; import static javax.swing.action.small_icon; import static javax.swing.jframe.exit_on_close; import javax.swing.keystroke; import java.awt.borderlayout; import java.awt.event.itemevent; import java.awt.event.itemlistener; import javax.swing.borderfactory; import javax.swing.jcheckboxmenuitem; import javax.swing.jlabel; import javax.swing.jtoolbar; public class gui extends jframe { private jlabel statusbar; public gui() { initui(); } private void initui() { createmenubar(); createtoolbar(); statusbar = new jlabel("ready"); statusbar.setborder (borderfactory.createetchedborder()); add(statusbar, borderlayout.south); jbutton quitbutton = new jbutton("quit"); quitbutton.settooltiptext("a button component"); quitbutton.addactionlistener(new actionlistener() { @override public void actionperformed(actionevent event) { system.exit(0); } }); quitbutton.setmnemonic(keyevent.vk_b); createlayout(quitbutton); settitle("typing tutor"); setsize(360, 250); setlocationrelativeto(null); setdefaultcloseoperation(exit_on_close); } private void createmenubar() { jmenubar menubar = new jmenubar(); imageicon iconnew = new imageicon("new.png"); imageicon iconopen = new imageicon("open.png"); imageicon iconsave = new imageicon("save.png"); imageicon iconexit = new imageicon("exit.png"); jmenu filemenu = new jmenu("file"); filemenu.setmnemonic(keyevent.vk_f); // old code jmenu impmenu = new jmenu("import"); filemenu.setmnemonic(keyevent.vk_i); jmenuitem newsfmi = new jmenuitem("import newsfeed list..."); jmenuitem bookmmi = new jmenuitem("import bookmarks..."); jmenuitem mailmi = new jmenuitem("import mail..."); impmenu.add(newsfmi); impmenu.add(bookmmi); impmenu.add(mailmi); jmenuitem newmi = new jmenuitem("new", iconnew); jmenuitem openmi = new jmenuitem("open", iconopen); jmenuitem savemi = new jmenuitem("save", iconsave); jmenuitem exitmi = new jmenuitem("exit", iconexit); exitmi.setmnemonic(keyevent.vk_e); exitmi.settooltiptext("exit application"); exitmi.addactionlistener(new actionlistener() { @override public void actionperformed(actionevent event) { system.exit(0); } }); // new code jmenu viewmenu = new jmenu("view"); viewmenu.setmnemonic(keyevent.vk_v); jcheckboxmenuitem sbarmi = new jcheckboxmenuitem ("show status bar"); sbarmi.setmnemonic(keyevent.vk_s); sbarmi.setdisplayedmnemonicindex(5); sbarmi.setselected(true); sbarmi.additemlistener(new itemlistener() { @override public void itemstatechanged(itemevent e) { if (e.getstatechange() == itemevent.selected) { statusbar.setvisible(true); } else { statusbar.setvisible(false); } } }); // newer code jmenu helpmenu = new jmenu("help"); viewmenu.add(sbarmi); filemenu.add(newmi); filemenu.add(openmi); filemenu.add(savemi); filemenu.addseparator(); filemenu.add(impmenu); filemenu.addseparator(); filemenu.add(exitmi); menubar.add(filemenu); menubar.add(viewmenu); menubar.add(box.createhorizontalglue()); menubar.add(helpmenu); setjmenubar(menubar); } private void createtoolbar() { jtoolbar toolbar = new jtoolbar(); imageicon icon = new imageicon("exit.png"); jbutton exitbutton = new jbutton(icon); toolbar.add(exitbutton); exitbutton.addactionlistener(new actionlistener() { @override public void actionperformed(actionevent event) { system.exit(0); } }); add(toolbar, borderlayout.north); } private void createlayout(jcomponent... arg) { container pane = getcontentpane(); grouplayout gl = new grouplayout(pane); pane.setlayout(gl); gl.setautocreatecontainergaps(true); gl.sethorizontalgroup(gl.createsequentialgroup() .addcomponent(arg[0]) ); gl.setverticalgroup(gl.createsequentialgroup() .addcomponent(arg[0]) ); pack(); } public static void main(string[] args) { eventqueue.invokelater(new runnable() { @override public void run() { gui ex = new gui(); ex.setvisible(true); } }); } } i checked stackoverflow , google searches ones i've seen either android and/or can understand. advice appreciated. thank you.
you've changed layout after creating , adding jtoolbar (to grouplayout - don't me started on choice)
so, if change createlayout creates secondary component, like...
private void createlayout(jcomponent... arg) { jpanel pane = new jpanel(); //container pane = getcontentpane(); grouplayout gl = new grouplayout(pane); pane.setlayout(gl); gl.setautocreatecontainergaps(true); gl.sethorizontalgroup(gl.createsequentialgroup() .addcomponent(arg[0]) ); gl.setverticalgroup(gl.createsequentialgroup() .addcomponent(arg[0]) ); add(pane); pack(); } it display like...
because both content , jtoolbar need live in contentpane, need concious of changes make it. solution makes secondary pane, onto "main" content can placed, in ever manner want, added contentpane still using borderlayout
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