java - Avoid space between JToolBar and JTabbedPane -

java - Avoid space between JToolBar and JTabbedPane -

i creating jframe example. in process first taken frame add together jmenubar add together jtoolbar , add together jtextpane. in menu bar add together file menu add together create menuitem file menu. when click on create menu item open internal frame plain document. but, huge space displayed between toolbar , tabbed pane. how avoid space?

here code:

public class createdoc extends javax.swing.jframe { jscrollpane scrollpane; jtextpane textpane; int i=0; public createdoc() { initcomponents(); } @suppresswarnings("unchecked") // <editor-fold defaultstate="collapsed" desc="generated code"> private void initcomponents() { createtoolbar = new javax.swing.jtoolbar(); help = new javax.swing.jbutton(); tabbedpane = new javax.swing.jtabbedpane(); createmenubar = new javax.swing.jmenubar(); createmenu = new javax.swing.jmenu(); create = new javax.swing.jmenuitem(); setdefaultcloseoperation(javax.swing.windowconstants.exit_on_close); createtoolbar.setrollover(true); help.seticon(new javax.swing.imageicon(getclass().getresource("/about.png"))); // noi18n help.settooltiptext(create.gettext()); help.setfocusable(false); help.sethorizontaltextposition(javax.swing.swingconstants.center); help.setverticaltextposition(javax.swing.swingconstants.bottom); createtoolbar.add(help); createmenu.settext("file"); create.settext("create"); create.addactionlistener(new java.awt.event.actionlistener() { public void actionperformed(java.awt.event.actionevent evt) { createactionperformed(evt); } }); createmenu.add(create); createmenubar.add(createmenu); setjmenubar(createmenubar); javax.swing.grouplayout layout = new javax.swing.grouplayout(getcontentpane()); getcontentpane().setlayout(layout); layout.sethorizontalgroup( layout.createparallelgroup(javax.swing.grouplayout.alignment.leading) .addcomponent(createtoolbar, javax.swing.grouplayout.default_size, 405, short.max_value) .addgroup(layout.createparallelgroup(javax.swing.grouplayout.alignment.leading) .addcomponent(tabbedpane, javax.swing.grouplayout.default_size, 405, short.max_value)) ); layout.setverticalgroup( layout.createparallelgroup(javax.swing.grouplayout.alignment.leading) .addgroup(layout.createsequentialgroup() .addcomponent(createtoolbar, javax.swing.grouplayout.preferred_size, javax.swing.grouplayout.default_size, javax.swing.grouplayout.preferred_size) .addgap(0, 254, short.max_value)) .addgroup(layout.createparallelgroup(javax.swing.grouplayout.alignment.leading) .addgroup(javax.swing.grouplayout.alignment.trailing, layout.createsequentialgroup() .addgap(0, 22, short.max_value) .addcomponent(tabbedpane, javax.swing.grouplayout.preferred_size, 257, javax.swing.grouplayout.preferred_size))) ); pack(); }// </editor-fold> private void createactionperformed(java.awt.event.actionevent evt) { final jinternalframe internalframe = new jinternalframe(""); i++; internalframe.setname("document"+i); internalframe.setclosable(true); internalframe.setautoscrolls(true); textpane=new jtextpane(); textpane.setfont(new java.awt.font("miriam fixed", 0, 14)); scrollpane=new jscrollpane(textpane); internalframe.add(scrollpane); tabbedpane.add(internalframe); internalframe.setsize(internalframe.getmaximumsize()); internalframe.pack(); internalframe.setvisible(true); } public static void main(string args[]) { /* set nimbus , sense */ //<editor-fold defaultstate="collapsed" desc=" , sense setting code (optional) "> /* if nimbus (introduced in java se 6) not available, remain default , feel. * details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html */ seek { (javax.swing.uimanager.lookandfeelinfo info : javax.swing.uimanager.getinstalledlookandfeels()) { if ("nimbus".equals(info.getname())) { javax.swing.uimanager.setlookandfeel(info.getclassname()); break; } } } grab (classnotfoundexception ex) { java.util.logging.logger.getlogger(createdoc.class.getname()).log(java.util.logging.level.severe, null, ex); } grab (instantiationexception ex) { java.util.logging.logger.getlogger(createdoc.class.getname()).log(java.util.logging.level.severe, null, ex); } grab (illegalaccessexception ex) { java.util.logging.logger.getlogger(createdoc.class.getname()).log(java.util.logging.level.severe, null, ex); } grab (javax.swing.unsupportedlookandfeelexception ex) { java.util.logging.logger.getlogger(createdoc.class.getname()).log(java.util.logging.level.severe, null, ex); } //</editor-fold> /* create , display form */ java.awt.eventqueue.invokelater(new runnable() { public void run() { new createdoc().setvisible(true); } }); } // variables declaration - not modify private javax.swing.jbutton help; private javax.swing.jmenuitem create; private javax.swing.jmenu createmenu; private javax.swing.jmenubar createmenubar; private javax.swing.jtoolbar createtoolbar; private javax.swing.jtabbedpane tabbedpane; // end of variables declaration }

remove line .addgap(0, 22, short.max_value) .addgap(0, 0, short.max_value). solve problem?

edit: comment taken consideration. have changed layout used bit works correctly.

private void initcomponents() { createtoolbar = new javax.swing.jtoolbar(); help = new javax.swing.jbutton(); tabbedpane = new javax.swing.jtabbedpane(); createmenubar = new javax.swing.jmenubar(); createmenu = new javax.swing.jmenu(); create = new javax.swing.jmenuitem(); setdefaultcloseoperation(javax.swing.windowconstants.exit_on_close); createtoolbar.setrollover(true); // commented testing - pls uncomment // help.seticon(new javax.swing.imageicon(getclass().getresource( // "/about.png"))); // noi18n help.settooltiptext(create.gettext()); help.setfocusable(false); help.sethorizontaltextposition(javax.swing.swingconstants.center); help.setverticaltextposition(javax.swing.swingconstants.bottom); createtoolbar.add(help); createmenu.settext("file"); create.settext("create"); create.addactionlistener(new java.awt.event.actionlistener() { public void actionperformed(java.awt.event.actionevent evt) { createactionperformed(evt); } }); createmenu.add(create); createmenubar.add(createmenu); setjmenubar(createmenubar); javax.swing.grouplayout layout = new javax.swing.grouplayout( getcontentpane()); layout.sethorizontalgroup( layout.createparallelgroup(alignment.leading) .addcomponent(createtoolbar, grouplayout.default_size, 405, short.max_value) .addcomponent(tabbedpane, grouplayout.default_size, 415, short.max_value) ); layout.setverticalgroup( layout.createparallelgroup(alignment.leading) .addgroup(layout.createsequentialgroup() .addcomponent(createtoolbar, grouplayout.preferred_size, grouplayout.default_size, grouplayout.preferred_size) .addgap(2) .addcomponent(tabbedpane, grouplayout.default_size, 268, short.max_value)) ); getcontentpane().setlayout(layout); pack(); }

java swing awt layout-manager