AppletTalk.com Java discussions newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  once again, another dumb noob question          AppletTalk.com Forum Index -> Java Help View previous topic :: View next topic   Author Message Justin Guest Posted: Fri Nov 17, 2006 5:34 am    Post subject: once again, another dumb noob question I have a class that extends JPanel. In it, I have a JScrollPane. Within that JScrollPane is a JList. I know its probably something stupid, but I can't for the life of me figure out why the JList will not display in the JScrollPane. Any help is appreciated.... import javax.swing.*; import javax.swing.BorderFactory; import javax.swing.border.Border; import java.awt.*; import java.awt.event.*; public class ORNote extends JPanel{ protected JList assistantsList; protected DefaultListModel assistantsDLM; protected JScrollPane assistantsScroller; protected String sSN; protected int dxID, prID; protected int WIDTH = 381; public ORNote(String stringSSN, int intDxID, int intPrID) { sSN = stringSSN; prID = intPrID; dxID = intDxID; setLayout(null); setSize(WIDTH, 100); Dimension prefSize = new Dimension(); prefSize.setSize(WIDTH,200); setPreferredSize(prefSize); Border blackline = BorderFactory.createLineBorder(Color.black); setBorder(blackline); addWidgets(); validate(); } protected void addWidgets(){ assistantsDLM = new DefaultListModel(); assistantsList = new JList(assistantsDLM); assistantsScroller = new JScrollPane(assistantsList); assistantsDLM.addElement("TEsting"); add(assistantsScroller); assistantsScroller.setBounds(80, 30, 290, 50); assistantsScroller.add(assistantsList); assistantsScroller.setViewportView(assistantsList); assistantsScroller.revalidate(); } } Back to top Justin Guest Posted: Fri Nov 17, 2006 6:08 am    Post subject: Re: once again, another dumb noob question I've been playing with that class some more, and theres definatly something wrong with it. When I add a JComboBox, the button on the JComboBox does not show up. No idea what. Back to top Michael Dunn Guest Posted: Fri Nov 17, 2006 7:46 am    Post subject: Re: once again, another dumb noob question Justin wrote: Quote: I have a class that extends JPanel. In it, I have a JScrollPane. Within that JScrollPane is a JList. I know its probably something stupid, but I can't for the life of me figure out why the JList will not display in the JScrollPane. Any help is appreciated.... code snipped if you mean the scrollbar does not appear, that is because the size of the JList is smaller that that of the scrollpane try changing this assistantsDLM.addElement("TEsting); to for(int x = 0; x < 10; x++){ assistantsDLM.addElement("TEsting "+x); } Back to top Justin Guest Posted: Fri Nov 17, 2006 8:11 am    Post subject: Re: once again, another dumb noob question nope, i mean the JList doesnt show up. For some reason, its as if the JList wasnt even added to the ScrollPane Back to top Justin Guest Posted: Fri Nov 17, 2006 8:11 am    Post subject: Re: once again, another dumb noob question nope, i mean the JList doesnt show up. For some reason, its as if the JList wasnt even added to the ScrollPane Back to top Andrew Thompson Guest Posted: Fri Nov 17, 2006 8:11 am    Post subject: Re: once again, another dumb noob question Justin wrote: Quote: I have a class that extends JPanel. In it, I have a JScrollPane. Within that JScrollPane is a JList. I know its probably something stupid, but I can't for the life of me figure out why the JList will not display in the JScrollPane. Any help is appreciated.... The code breaks right, ...here Quote: setLayout(null); Learn layouts, and this problem should disappear. Andrew T. Back to top Justin Guest Posted: Fri Nov 17, 2006 6:47 pm    Post subject: Re: once again, another dumb noob question I definatly dont think thats where the problem resides as I have about 30 other classes with no layout manager. I dont think there is a layout manager that will meet my design needs for the GUI. Back to top Thomas Weidenfeller Guest Posted: Fri Nov 17, 2006 7:12 pm    Post subject: Re: once again, another dumb noob question Justin wrote: Quote: I definatly dont think thats where the problem resides as I have about 30 other classes with no layout manager. I dont think there is a layout manager that will meet my design needs for the GUI. That just means you have written 30 classes for a non-portable, non-cross-platform, non-robust GUI. Congratulations! /Thomas -- The comp.lang.java.gui FAQ: http://gd.tuwien.ac.at/faqs/faqs-hierarchy/comp/comp.lang.java.gui/ ftp://ftp.cs.uu.nl/pub/NEWS.ANSWERS/computer-lang/java/gui/faq Back to top Andrew Thompson Guest Posted: Fri Nov 17, 2006 8:15 pm    Post subject: Re: once again, another dumb noob question Justin wrote: Quote: I definatly dont think thats where the problem resides as I have about 30 other classes with no layout manager. I dont think there is a layout manager that will meet my design needs for the GUI. You are wrong. 1) Nested layout*s* are often the answer to that layout that 'no layout' (singular) can do. 2) You (think you have*) the logic to layout the GUI, so wrap that logic in a class and extend LM2(?) and voila.. you have a *layout*. (* + what Thomas said) Andrew T. Back to top Justin Guest Posted: Fri Nov 17, 2006 8:43 pm    Post subject: Re: once again, another dumb noob question ok, well, regardless of what layout manager I use (I will be in control of the hardware that the program is run on) why does the JList not show up? I've been playing with this for 5-6 hours and cannot get it to show. Back to top Justin Guest Posted: Fri Nov 17, 2006 8:43 pm    Post subject: Re: once again, another dumb noob question ok, well, regardless of what layout manager I use (I will be in control of the hardware that the program is run on) why does the JList not show up? I've been playing with this for 5-6 hours and cannot get it to show. And I have tried layout managers, and they dont have an affect. Back to top Andrew Thompson Guest Posted: Fri Nov 17, 2006 10:42 pm    Post subject: Re: once again, another dumb noob question Justin wrote: Quote: ok, well, regardless of what layout manager I use (I will be in control of the hardware that the program is run on) why does the JList not show up? I've been playing with this for 5-6 hours and cannot get it to show. Took me ten minutes to make it show up using a BorderLayout - most of that time was spent turning it into an SSCCE and deciding what to leave the same. <sscce> import javax.swing.*; import javax.swing.BorderFactory; import javax.swing.border.Border; import java.awt.*; import java.awt.event.*; public class ORNote extends JPanel{ protected JList assistantsList; protected DefaultListModel assistantsDLM; protected JScrollPane assistantsScroller; protected String sSN; protected int dxID, prID; protected int WIDTH = 381; public ORNote(String stringSSN, int intDxID, int intPrID) { sSN = stringSSN; prID = intPrID; dxID = intDxID; // layout! setLayout(new BorderLayout()); Border blackline = BorderFactory.createLineBorder(Color.black); setBorder(blackline); addWidgets(); } protected void addWidgets(){ assistantsDLM = new DefaultListModel(); assistantsDLM.addElement("Testing"); for (int ii=0; ii<20; ii++) { assistantsDLM.addElement(sSN + ": " + (ii+1)); } assistantsList = new JList(assistantsDLM); assistantsScroller = new JScrollPane(assistantsList); add(assistantsScroller, BorderLayout.CENTER); } public static void main(String[] args) { JFrame f = new JFrame("Layout"); f.add( new ORNote("Hi!",1,2) ); f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); f.pack(); f.setVisible(true); } } </sscce> Quote: ...And I have tried layout managers, and they dont have an affect. I think now comes the part where you complain.. 'but this is not how I want it set out!' Andrew T. Back to top IchBin Guest Posted: Fri Nov 17, 2006 11:45 pm    Post subject: Re: once again, another dumb noob question Justin wrote: Quote: ok, well, regardless of what layout manager I use (I will be in control of the hardware that the program is run on) why does the JList not show up? I've been playing with this for 5-6 hours and cannot get it to show. And I have tried layout managers, and they dont have an affect. You really should use a layout manager but anyway to get you going change your constructor to this: public ORNote(String stringSSN, int intDxID, int intPrID) { // Create and set up the window. JFrame jframe = new JFrame("test"); // Make sure we have nice window decorations. jframe.setDefaultLookAndFeelDecorated(true); jframe.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setOpaque(true); //content panes must be opaque jframe.setContentPane(this); setLayout(null); setSize(WIDTH, 100); Dimension prefSize = new Dimension(); prefSize.setSize(WIDTH, 200); setPreferredSize(prefSize); Border blackline = BorderFactory.createLineBorder(Color.black); setBorder(blackline); addWidgets(); //Display the window. jframe.pack(); jframe.setVisible(true); } -- Thanks in Advance... http://ichbin.9999mb.com IchBin, Pocono Lake, Pa, USA http://weconsultants.phpnet.us ______________________________________________________________________ 'If there is one, Knowledge is the "Fountain of Youth"' -William E. Taylor, Regular Guy (1952-) Back to top Michael Dunn Guest Posted: Sat Nov 18, 2006 5:13 am    Post subject: Re: once again, another dumb noob question "Justin" <justin.lottes (AT) gmail (DOT) com> wrote in message news:1163734029.054703.4930 (AT) k70g2000cwa (DOT) googlegroups.com... Quote: nope, i mean the JList doesnt show up. For some reason, its as if the JList wasnt even added to the ScrollPane shows fine for me (winxp 1.5.0_05) I now understand your post about the comboBox. I've seen similar issues, mainly with optionPanes, solved by reducing the pc's hardware acceleration Back to top Justin Guest Posted: Tue Nov 21, 2006 8:10 am    Post subject: Re: once again, another dumb noob question Michael Dunn wrote: Quote: "Justin" <justin.lottes (AT) gmail (DOT) com> wrote in message news:1163734029.054703.4930 (AT) k70g2000cwa (DOT) googlegroups.com... nope, i mean the JList doesnt show up. For some reason, its as if the JList wasnt even added to the ScrollPane shows fine for me (winxp 1.5.0_05) I now understand your post about the comboBox. I've seen similar issues, mainly with optionPanes, solved by reducing the pc's hardware acceleration Thank you, I ended up trashing the class and starting from scratch. That fixed the problem even though it was the exact same code. And thanks all for the advice on using layouts. lol, thats going to be resolved in version 2.0. haha. Back to top Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First         AppletTalk.com Forum Index -> Java Help All times are GMT Page 1 of 1   Jump to: Select a forum Java Newsgroups----------------Java DiscussionsWeb-based java games comp.lang.java 3D Graphics API's for Java Java: Support and criticism Java System Announcements comp.lang.java.api JavaBeans Java and CORBA Java and Databases comp.lang.java.developer Java GUI Toolkits Java Help comp.lang.java.javascript JVM, native methods and hardware comp.lang.java.misc Java Language Programming Security and Java comp.lang.java.setup Java Software Tools comp.lang.java.tech ibm.software.java.linux  Non-English Java Newsgroups----------------Java Language (German)Language Java (Français)Java (Italian)  You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum Powered by phpBB © 2001, 2006 phpBB Group SEO toolkit © 2004-2006 webmedic.