Examples of java.awt.BorderLayout

java.awt.BorderLayout
as p.add(new TextArea(), BorderLayout.CENTER);
In addition, BorderLayout supports the relative positioning constants, PAGE_START, PAGE_END, LINE_START, and LINE_END. In a container whose ComponentOrientation is set to ComponentOrientation.LEFT_TO_RIGHT, these constants map to NORTH, SOUTH, WEST, and EAST, respectively.
For compatibility with previous releases, BorderLayout also includes the relative positioning constants BEFORE_FIRST_LINE, AFTER_LAST_LINE, BEFORE_LINE_BEGINS and AFTER_LINE_ENDS. These are equivalent to PAGE_START, PAGE_END, LINE_START and LINE_END respectively. For consistency with the relative positioning constants used by other components, the latter constants are preferred.
Mixing both absolute and relative positioning constants can lead to unpredicable results. If you use both types, the relative constants will take precedence. For example, if you add components using both the NORTH and PAGE_START constants in a container whose orientation is LEFT_TO_RIGHT, only the PAGE_START will be layed out.
NOTE: Currently (in the Java 2 platform v1.2), BorderLayout does not support vertical orientations. The isVertical setting on the container's ComponentOrientation is not respected.
The components are laid out according to their preferred sizes and the constraints of the container's size. The NORTH and SOUTH components may be stretched horizontally; the EAST and WEST components may be stretched vertically; the CENTER component may stretch both horizontally and vertically to fill any space left over.
Here is an example of five buttons in an applet laid out using the BorderLayout layout manager:

The code for this applet is as follows:
```
 import java.awt.*; import java.applet.Applet; public class buttonDir extends Applet { public void init() { setLayout(new BorderLayout()); add(new Button("North"), BorderLayout.NORTH); add(new Button("South"), BorderLayout.SOUTH); add(new Button("East"), BorderLayout.EAST); add(new Button("West"), BorderLayout.WEST); add(new Button("Center"), BorderLayout.CENTER); } } 
```
@version 1.60, 04/07/06 @author Arthur van Hoff @see java.awt.Container#add(String,Component) @see java.awt.ComponentOrientation @since JDK1.0

    mForm = new SearchForm(false, false, false);
    mForm.setSearchFormSettings(mSearchFormSettings);


    JPanel content = (JPanel) getContentPane();


    content.setLayout(new BorderLayout());
    content.setBorder(Borders.DLU4_BORDER);


    content.add(mForm, BorderLayout.NORTH);


    JButton ok = new JButton(Localizer.getLocalization(Localizer.I18N_OK));

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    return mPluginId;
  }


  public JPanel getSettingsPanel() {


    JPanel content = new JPanel(new BorderLayout(0, 7));
    JTextArea ta = new JTextArea(mLocalizer.msg("desc",
        "Accept all programs marked by plugin:"));
    ta.setLineWrap(true);
    ta.setWrapStyleWord(true);
    ta.setOpaque(false);
    ta.setEditable(false);
    ta.setFocusable(false);
    content.add(ta, BorderLayout.NORTH);


    PluginProxy[] plugins = PluginProxyManager.getInstance()
        .getActivatedPlugins();
    Arrays.sort(plugins, new PluginProxy.Comparator());


    mBox = new JComboBox(plugins);
    if (mPluginId != null) {
      PluginProxy plugin = PluginProxyManager.getInstance().getPluginForId(mPluginId);
      if (plugin != null) {
        mBox.setSelectedItem(plugin);
      }
    }
    content.add(mBox, BorderLayout.CENTER);


    JPanel centerPanel = new JPanel(new BorderLayout());
    centerPanel.add(content, BorderLayout.NORTH);
    return centerPanel;
  }

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  private ChannelSelectionPanel mChannelPanel;
  private FilterSelectionPanel mFilterPanel;


    public ListingsTab(Frame parentFrame) {
      super();
      setLayout(new BorderLayout());
      setBorder(Borders.DIALOG_BORDER);


      JPanel content = new JPanel();
      content.setLayout(new BoxLayout(content, BoxLayout.Y_AXIS));
      mDatePanel = new DateRangePanel();

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    mShowSettings = showSettings;
    mFunctionGroup = new JTaskPaneGroup();
    mFunctionGroup.setTitle(mLocalizer.msg("functions", "Functions"));
    mFunctionGroup.setDoubleBuffered(true);


    mMainPanel = new JPanel(new BorderLayout());
    mMainPanel.setPreferredSize(new Dimension(750, 500));
    mMainPanel.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));


    mInfoEP = new ProgramEditorPane();


    final ExtendedHTMLEditorKit kit = new ExtendedHTMLEditorKit();
    kit.setLinkCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));


    mInfoEP.setEditorKit(kit);
    mInfoEP.setDoubleBuffered(true);


    mDoc = (ExtendedHTMLDocument) mInfoEP.getDocument();


    mInfoEP.setEditable(false);


    mInfoEP.addMouseListener(new MouseAdapter() {
      public void mouseClicked(MouseEvent e) {
        if (SwingUtilities.isLeftMouseButton(e) && (e.getClickCount() == 1)
            && e.getModifiersEx() == 0) {
          handleEvent(e, false);
        }
      }


      public void mousePressed(MouseEvent e) {
        if (e.isPopupTrigger()) {
          handleEvent(e, true);
        }
      }


      public void mouseReleased(MouseEvent e) {
        if (e.isPopupTrigger()) {
          handleEvent(e, true);
        }
      }


      private JPopupMenu getPopupMenu(String search, final boolean actorFavorite) {
        if (search != null) {
          search = search.trim();
        }
        final String searchText = search;
        JPopupMenu popupMenu = new JPopupMenu();
        if (searchText != null && searchText.length() > 0) {
          String value = ProgramInfo.getInstance().getSettings()
              .getActorSearch();


          JMenuItem item = searchTextMenuItem(searchText);


          if (value.equals("internalSearch")) {
            item.setFont(item.getFont().deriveFont(Font.BOLD));
          }


          popupMenu.add(item);


          item = new JMenuItem(mLocalizer.msg("searchWikipedia",
              "Search in Wikipedia"));
          item.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
              searchWikipedia(searchText);
            }
          });


          if (value.equals("internalWikipedia")) {
            item.setFont(item.getFont().deriveFont(Font.BOLD));
          }


          popupMenu.add(item);


          final PluginAccess webPlugin = PluginManagerImpl.getInstance()
              .getActivatedPluginForId("java.webplugin.WebPlugin");


          if (webPlugin != null && webPlugin.canReceiveProgramsWithTarget()) {
            ProgramReceiveTarget[] targets = webPlugin
                .getProgramReceiveTargets();


            if (targets != null && targets.length > 0) {
              final JMenu subMenu = new JMenu(webPlugin.getInfo().getName());
              subMenu.setIcon(webPlugin.getMarkIcon());
              popupMenu.add(subMenu);


              for (final ProgramReceiveTarget target : targets) {
                item = new JMenuItem(target.toString());
                item.addActionListener(new ActionListener() {
                  public void actionPerformed(ActionEvent e) {
                    searchWebPlugin(searchText, target);
                  }
                });


                if (value.endsWith(target.getTargetId())) {
                  item.setFont(item.getFont().deriveFont(Font.BOLD));
                }


                subMenu.add(item);
              }
            }
          }


          popupMenu.addSeparator();
          popupMenu.add(addFavoriteMenuItem(searchText, actorFavorite));
          popupMenu.addSeparator();
        }
        JMenu subMenu = ContextMenuManager.getInstance()
            .createContextMenuItems(ProgramInfoProxy.getInstance(), mProgram,
                true);
        subMenu.setText(Localizer.getLocalization(Localizer.I18N_PROGRAM));
        popupMenu.add(subMenu);
        return popupMenu;
      }


      private void handleEvent(MouseEvent e, boolean popupEvent) {
        JEditorPane editor = (JEditorPane) e.getSource();


        Point pt = new Point(e.getX(), e.getY());
        int pos = editor.viewToModel(pt);
        if (pos >= 0) {
          String link = getLink(pos, editor);


          if (link != null
              && link.startsWith(ProgramTextCreator.TVBROWSER_URL_PROTOCOL)) {
            final String searchText = link
                .substring(ProgramTextCreator.TVBROWSER_URL_PROTOCOL.length());


            if (popupEvent) {
              JPopupMenu popupMenu = getPopupMenu(searchText, true);
              popupMenu.show(e.getComponent(), e.getX(), e.getY());
            } else {
              String value = ProgramInfo.getInstance().getSettings()
                  .getActorSearch();


              boolean found = false;


              if (value.contains("#_#_#")) {
                String[] keys = value.split("#_#_#");


                PluginAccess webPlugin = PluginManagerImpl.getInstance()
                    .getActivatedPluginForId(keys[0]);


                if (webPlugin != null
                    && webPlugin.canReceiveProgramsWithTarget()) {
                  ProgramReceiveTarget[] targets = webPlugin
                      .getProgramReceiveTargets();


                  if (targets != null) {


                    for (ProgramReceiveTarget target : targets) {
                      if (target.getTargetId().equals(keys[1])) {
                        searchWebPlugin(searchText, target);
                        found = true;
                      }
                    }
                  }
                }
              }


              if (!found) {
                if (value.equals("internalSearch")) {
                  internalSearch(searchText);
                } else {
                  searchWikipedia(searchText);
                }
              }
            }
          } else if (popupEvent){
            String selection = getSelection(pos, editor);
            JPopupMenu popupMenu = getPopupMenu(selection, false);
            TextComponentPopupEventQueue.addStandardContextMenu(mInfoEP,
                popupMenu);
            popupMenu.show(e.getComponent(), e.getX(), e.getY());
          }
        }
      }


      private JMenuItem searchTextMenuItem(final String desc) {
        JMenuItem item = new JMenuItem(mLocalizer.msg("searchTvBrowser",
            "Search in TV-Browser"), IconLoader.getInstance().getIconFromTheme(
            "actions", "edit-find"));
        item.addActionListener(new ActionListener() {
          public void actionPerformed(ActionEvent e) {
            internalSearch(desc);
          }
        });
        return item;
      }


      private JMenuItem addFavoriteMenuItem(final String desc,
          final boolean actor) {
        JMenuItem item;
        item = new JMenuItem(mLocalizer.ellipsisMsg("addFavorite",
            "Create favorite"), IconLoader.getInstance().getIconFromTheme(
            "emblems", "emblem-favorite"));
        item.addActionListener(new ActionListener() {
          public void actionPerformed(ActionEvent e) {
            if (actor) {
              FavoritesPlugin.getInstance().showCreateActorFavoriteWizard(
                  mProgram, desc);
            } else {
              FavoritesPlugin.getInstance().showCreateTopicFavoriteWizard(
                  mProgram, desc);
            }
          }
        });
        return item;
      }


      private void searchWebPlugin(String desc, ProgramReceiveTarget target) {
        target.getReceifeIfForIdOfTarget().receiveValues(new String[] { desc },
            target);
      }


      private void searchWikipedia(String desc) {
        DontShowAgainOptionBox
            .showOptionDialog(
                "programInfoDialog.newActorSearch",
                mDialog,
                ProgramInfo.mLocalizer
                    .msg(
                        "newActorSearchText",
                        "This function was changed for TV-Browser 2.7. The search type is now\nchangeable in the settings of the Program details, additional now available\nis a context menu for the actor search."),
                ProgramInfo.mLocalizer
                    .msg("newActorSearch", "New actor search"));


        try {
          String url = URLEncoder.encode(desc, "UTF-8").replace("+", "%20");
          url = mLocalizer.msg("wikipediaLink",
              "http://en.wikipedia.org/wiki/{0}", url);
          Launch.openURL(url);
        } catch (UnsupportedEncodingException e1) {
          e1.printStackTrace();
        }
      }


      private void internalSearch(String desc) {
        desc = desc.replaceAll("  ", " ").replaceAll(" ", " AND ");
        SearchFormSettings settings = new SearchFormSettings(desc);
        settings.setSearchIn(SearchFormSettings.SEARCH_IN_ALL);
        settings.setSearcherType(PluginManager.SEARCHER_TYPE_BOOLEAN);
        settings.setNrDays(-1);
        SearchHelper.search(mInfoEP, settings, null, true);
      }


      private String getLink(int pos, JEditorPane html) {
        Document doc = html.getDocument();
        if (doc instanceof HTMLDocument) {
          HTMLDocument hdoc = (HTMLDocument) doc;
          Element e = hdoc.getCharacterElement(pos);
          AttributeSet a = e.getAttributes();
          AttributeSet anchor = (AttributeSet) a.getAttribute(HTML.Tag.A);


          if (anchor != null) {
            return (String) anchor.getAttribute(HTML.Attribute.HREF);
          }
        }
        return null;
      }


      private String getSelection(int pos, JEditorPane html) {
        Caret caret = html.getCaret();
        if (caret != null) {
          try {
            int start = Math.min(caret.getDot(), caret.getMark());
            int length = Math.abs(caret.getDot() - caret.getMark());
            return html.getDocument().getText(start, length);
          } catch (BadLocationException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
          }
        }
        return null;
      }


    });


    mInfoEP.addHyperlinkListener(new HyperlinkListener() {
      private String mTooltip;


      public void hyperlinkUpdate(HyperlinkEvent evt) {
        if (evt.getEventType() == HyperlinkEvent.EventType.ENTERED) {
          mTooltip = mInfoEP.getToolTipText();
          mInfoEP.setToolTipText(getLinkTooltip(evt));
        }
        if (evt.getEventType() == HyperlinkEvent.EventType.EXITED) {
          mInfoEP.setToolTipText(mTooltip);
        }
        if (evt.getEventType() == HyperlinkEvent.EventType.ACTIVATED) {
          URL url = evt.getURL();
          if (url != null) {
            Launch.openURL(url.toString());
          }
        }
      }
    });


    mFindAsYouType = new TextComponentFindAction(mInfoEP, true);


    final JScrollPane scrollPane = new JScrollPane(mInfoEP);
    scrollPane.getVerticalScrollBar().setUnitIncrement(30);


    // ScrollActions
    mUpAction = new AbstractAction() {
      public void actionPerformed(ActionEvent e) {
        scrollPane.getVerticalScrollBar().setValue(
            scrollPane.getVerticalScrollBar().getValue()
                - scrollPane.getVerticalScrollBar().getUnitIncrement());
      }
    };


    mDownAction = new AbstractAction() {
      public void actionPerformed(ActionEvent e) {
        scrollPane.getVerticalScrollBar().setValue(
            scrollPane.getVerticalScrollBar().getValue()
                + scrollPane.getVerticalScrollBar().getUnitIncrement());
      }
    };


    mPluginsPane = new JTaskPane();
    mPluginsPane.add(mFunctionGroup);


    mActionsPane = new JScrollPane(mPluginsPane);


    mConfigBtn = new JButton(mLocalizer.msg("config", "Configure view"));
    mConfigBtn.setIcon(TVBrowserIcons.preferences(TVBrowserIcons.SIZE_SMALL));


    ButtonBarBuilder2 buttonBuilder = new ButtonBarBuilder2();


    buttonBuilder.addButton(mConfigBtn);
    mConfigBtn.setVisible(showSettings);


    if (pluginsSize == null) {
      mActionsPane.setPreferredSize(new Dimension(250, 500));
    } else {
      mActionsPane.setPreferredSize(pluginsSize);
    }


    if (ProgramInfo.getInstance().getSettings().getShowFunctions()) {
      JSplitPane split = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT);
      split.setDividerSize(5);
      split.setContinuousLayout(true);
      split.setDividerLocation(mActionsPane.getPreferredSize().width + 1);
      split.setLeftComponent(mActionsPane);
      split.setRightComponent(scrollPane);
      mMainPanel.add(split, BorderLayout.CENTER);
      mFindAsYouType.installKeyListener(split);
    } else {
      final JButton functions = new JButton(mLocalizer.msg("functions",
          "Functions"));
      functions.setFocusable(false);


      functions.addMouseListener(new MouseAdapter() {
        @Override
        public void mouseClicked(MouseEvent e) {
          if (e.getClickCount() == 1) {
            JPopupMenu popupMenu = PluginProxyManager.createPluginContextMenu(
                mProgram, ProgramInfoProxy.getInstance());
            popupMenu.show(functions, e.getX(), e.getY()
                - popupMenu.getPreferredSize().height);
          }
        }
      });


      buttonBuilder.addUnrelatedGap();
      buttonBuilder.addButton(functions);
      mMainPanel.add(scrollPane, BorderLayout.CENTER);
    }


    // buttons
    JPanel buttonPn = new JPanel(new BorderLayout(0, 5));
    buttonPn.add(mFindAsYouType.getSearchBar(), BorderLayout.NORTH);
    buttonPn.setBorder(BorderFactory.createEmptyBorder(5, 0, 0, 0));


    mMainPanel.add(buttonPn, BorderLayout.SOUTH);

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      mDialog.setTitle(mLocalizer.msg("configureBackgroundStyleDialogTitle", "Configure background style '{0}'", style
          .getName()));


      JPanel dialogContent = (JPanel) mDialog.getContentPane();
      dialogContent.setBorder(new EmptyBorder(10, 10, 11, 11));
      dialogContent.setLayout(new BorderLayout(0, 15));


      JPanel content = new JPanel(new BorderLayout());


      content.add(style.createSettingsContent(), BorderLayout.NORTH);
      dialogContent.add(content, BorderLayout.CENTER);


      JPanel buttonPn = new JPanel(new BorderLayout());
      JPanel pn = new JPanel();
      pn.setLayout(new FlowLayout(FlowLayout.RIGHT, 5, 0));


      JButton okBtn = new JButton(Localizer.getLocalization(Localizer.I18N_OK));
      JButton cancelBtn = new JButton(Localizer.getLocalization(Localizer.I18N_CANCEL));

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    private JPanel mGridPn;
    
    public TimeChooserPanel(MainFrame parent) {
      setOpaque(false);
      mParent=parent;
      setLayout(new BorderLayout(0,2));
      setBorder(BorderFactory.createEmptyBorder(5,3,5,3));
      
      mGridPn = new JPanel(new GridFlowLayout(5,5,GridFlowLayout.TOP, GridFlowLayout.CENTER));
      add(mGridPn,BorderLayout.CENTER);

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      m_dbSet = flag;
  }


  protected void appearanceFinal() {
    removeAll();
    setLayout(new BorderLayout());
    JButton goButton = new JButton("Start...");
    add(goButton, BorderLayout.CENTER);
    goButton.addActionListener(new ActionListener() {
  public void actionPerformed(ActionEvent e) {
    startLoading();

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      });
  }


  protected void appearanceDesign() {
    removeAll();
    setLayout(new BorderLayout());
    add(m_visual, BorderLayout.CENTER);
  }

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  private String m_backup;


  public ClassAssignerCustomizer() {
    setBorder(javax.swing.BorderFactory.createEmptyBorder(0, 5, 5, 5));


    setLayout(new BorderLayout());
    add(new javax.swing.JLabel("ClassAssignerCustomizer"), 
  BorderLayout.NORTH);
    m_holderP.setLayout(new BorderLayout());
    m_holderP.setBorder(BorderFactory.createTitledBorder("Choose class attribute"));
    m_holderP.add(m_ClassCombo, BorderLayout.CENTER);
    m_ClassCombo.addActionListener(new ActionListener() {
  public void actionPerformed(ActionEvent e) {
    if (m_classAssigner != null && m_displayColNames == true) {

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          });
      repaint();
    } catch (Exception ex) {
      ex.printStackTrace();
    }
    setLayout(new BorderLayout());
    m_fileChooser.setDialogType(JFileChooser.SAVE_DIALOG);
    m_fileChooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
    m_fileChooser.setApproveButtonText("Select directory");
    m_fileChooser.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {

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