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

    final int ageLimit = program.getIntField(ProgramFieldType.AGE_LIMIT_TYPE);
    return ageLimit > 0 && ageLimit <= mRequiredAge;
  }


  public JPanel getSettingsPanel() {
    JPanel content = new JPanel(new BorderLayout());


    mAgeSpinner = new JSpinner(new SpinnerNumberModel(16, 6, 21, 1));
    mAgeSpinner.setValue(mRequiredAge);
    content.add(UiUtilities.createHelpTextArea(mLocalizer
        .msg("description", "")), BorderLayout.NORTH);
    content.add(mAgeSpinner, BorderLayout.SOUTH);


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

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    if (bitSet(mSelectedBits, NOTYETSTARTED)) {
      mCheckBox[2].setSelected(true);
    }


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

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      mScript = null;
    }
  }


  public JPanel getSettingsPanel() {
    JPanel content = new JPanel(new BorderLayout());


    mScriptEditor = new BeanShellEditor();
    mScriptEditor.setText(mScriptSource);


    JScrollPane scrollPane = new JScrollPane(mScriptEditor);

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      mItemSelected = new JCheckBox();
      mItemSelected.setOpaque(false);
      mSelectionWidth = mItemSelected.getPreferredSize().width;


      mItemLabel = new JLabel();
      mItemPanel = new JPanel(new BorderLayout());
      mItemPanel.add(mItemSelected, BorderLayout.WEST);
      mItemPanel.add(mItemLabel, BorderLayout.CENTER);
    }

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    panel.add(mMinSpinner, a);


    panel.add(mMaxCheck, b);
    panel.add(mMaxSpinner, a);


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

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      moreToolbar.setRollover(true);
      moreToolbar.setFloatable(false);
      moreToolbar.add(new MoreButton(toolbar,mainFrame));
      addMouseAdapter(moreToolbar);


        JPanel panel = new JPanel(new BorderLayout(0,0));


        panel.add(toolbar, BorderLayout.CENTER);


        if (toolbar.getToolbarLocation().compareTo(BorderLayout.NORTH) == 0) {
          moreToolbar.setBorder(BorderFactory.createEmptyBorder(0,0,0,5));

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      bit <<= 1;
    }
  }


  public JPanel getSettingsPanel() {
    final JPanel content = new JPanel(new BorderLayout());
    content.add(new JLabel(mLocalizer.msg("description",
        "This filter accepts programs belonging to the following channels:")),
        BorderLayout.NORTH);


    ArrayList<String> selectedDays = new ArrayList<String>();

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   *
   * @return the SettingsPanel
   */
  public JPanel createSettingsPanel() {
    mChannelListModel = new ChannelListModel();
    JPanel panel = new JPanel(new BorderLayout());


    JPanel northPn = new JPanel(new GridLayout(1, 2));
    JPanel centerPn = new JPanel(new GridLayout(1, 2));
    JPanel southPn = new JPanel(new BorderLayout());
    southPn.setBorder(BorderFactory.createEmptyBorder(5, 0, 5, 0));


    panel.add(northPn, BorderLayout.NORTH);
    panel.add(centerPn, BorderLayout.CENTER);
    panel.add(southPn, BorderLayout.SOUTH);


    mAvailableSeparator = DefaultComponentFactory.getInstance()
        .createSeparator(
            mLocalizer.msg("availableChannels", "Available channels") + ":");
    mAvailableSeparator.setBorder(BorderFactory.createEmptyBorder(5, 0, 5, 5));


    mSubscribedSeparator = DefaultComponentFactory.getInstance()
        .createSeparator(
            mLocalizer.msg("subscribedChannels", "Subscribed channels") + ":");
    mSubscribedSeparator.setBorder(BorderFactory.createEmptyBorder(5, 0, 5, 5));


    northPn.add(mAvailableSeparator, BorderLayout.NORTH);
    northPn.add(mSubscribedSeparator, BorderLayout.NORTH);


    // left list box
    JPanel listBoxPnLeft = new JPanel(new BorderLayout());
    mAllChannels = new ChannelJList(new DefaultListModel());
    mAllChannels.setCellRenderer(new ChannelListCellRenderer(true, true, true, true));


    listBoxPnLeft.add(new JScrollPane(mAllChannels), BorderLayout.CENTER);
/*
    mAllChannels.addListSelectionListener(new ListSelectionListener() {
      public void valueChanged(ListSelectionEvent e) {
        if ((mAllChannels.getModel().getSize() == 1)
            && (mAllChannels.getSelectedIndex() >= 0)
            && (mAllChannels.getSelectedValue() instanceof String)) {
          mAllChannels.setSelectedIndices(new int[] {});
        }
      }
    });
*/
    centerPn.add(listBoxPnLeft);


    mRightButton = new JButton(TVBrowserIcons.right(TVBrowserIcons.SIZE_LARGE));


    mRightButton.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        moveChannelsToRight();
      }
    });


    mLeftButton = new JButton(TVBrowserIcons.left(TVBrowserIcons.SIZE_LARGE));


    mLeftButton.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        moveChannelsToLeft();
      }
    });


    JPanel btnPanel = createButtonPn(mRightButton, mLeftButton);
    btnPanel.setBorder(BorderFactory.createEmptyBorder(0, Sizes
        .dialogUnitXAsPixel(3, btnPanel), 0, Sizes.dialogUnitXAsPixel(3,
        btnPanel)));
    listBoxPnLeft.add(btnPanel, BorderLayout.EAST);


    // right list box
    JPanel listBoxPnRight = new JPanel(new BorderLayout());
    SortableItemList channelList = new SortableItemList(new ChannelJList());


    mSubscribedChannels = channelList.getList();
    mFilter = new ChannelFilter();
    mSubscribedChannels.setCellRenderer(new FilteredChannelListCellRenderer(mFilter));


    // Register DnD on the lists.
    mDnDHandler = new ListDragAndDropHandler(mAllChannels, mSubscribedChannels, this);
    mDnDHandler.setPaintCueLine(false, true);


    // Register the listener for DnD on the lists.
    new DragAndDropMouseListener(mAllChannels, mSubscribedChannels, this,
        mDnDHandler);
    mSubscribedChannelListener = new DragAndDropMouseListener(
        mSubscribedChannels, mAllChannels, this, mDnDHandler);


    restoreForPopup();


    listBoxPnRight.add(new JScrollPane(mSubscribedChannels),
        BorderLayout.CENTER);


    final JButton configureChannels = new JButton(mLocalizer.msg(
        "configSelectedChannels", "Configure selected channels"));
    configureChannels.setEnabled(false);


    configureChannels.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        configChannels();
      }
    });


    mSubscribedChannels.addListSelectionListener(new ListSelectionListener() {
      public void valueChanged(ListSelectionEvent e) {
        if (mSubscribedChannels.getSelectedValues().length > 0) {
          configureChannels.setEnabled(true);
        } else {
          configureChannels.setEnabled(false);
        }
      }
    });


    // use INSERT key on left side to move selected channels to active channel
    // list
    mAllChannels.addKeyListener(new KeyAdapter() {
      public void keyPressed(KeyEvent e) {
        if (e.getKeyCode() == KeyEvent.VK_INSERT) {
          moveChannelsToRight();
        }
      }
    });


    // use DELETE key on right side to remove selected channels
    mSubscribedChannels.addKeyListener(new KeyAdapter() {
      public void keyPressed(KeyEvent e) {
        if (e.getKeyCode() == KeyEvent.VK_DELETE) {
          moveChannelsToLeft();
        }
      }
    });


    JPanel btnPanel2 = createButtonPn(channelList.getTopButton(), channelList
        .getUpButton(), channelList.getDownButton(), channelList
        .getBottomButton());
    btnPanel2.setBorder(BorderFactory.createEmptyBorder(0, Sizes
        .dialogUnitXAsPixel(3, btnPanel2), 0, 0));
    listBoxPnRight.add(btnPanel2, BorderLayout.EAST);


    centerPn.add(listBoxPnRight);


    final JPanel result = new JPanel(new BorderLayout());
    result.addComponentListener(new ComponentAdapter() {


      @Override
      public void componentHidden(ComponentEvent e) {
        if (e.getComponent() == result) {
          mRefreshListTimer = null;
        }
      }


    });


    result.add(createFilterPanel(), BorderLayout.NORTH);


    result.add(panel, BorderLayout.CENTER);


    LinkButton urlLabel = new LinkButton(
        mLocalizer
            .msg(
                "addMoreChannels",
                "You want to add your own channels? Click here!"),
        mLocalizer.msg("addMoreChannelsUrl",
            "http://enwiki.tvbrowser.org/index.php/Available_stations"));


    JPanel buttonsPanel = new JPanel(new BorderLayout());


    // buttonsPanel.add(pn2, BorderLayout.EAST);
    buttonsPanel.add(urlLabel, BorderLayout.SOUTH);


    result.add(buttonsPanel, BorderLayout.SOUTH);

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    filterPanel.add(new JLabel(mLocalizer.msg("category", "Category") + ":"),
        cc.xy(6, 1));
    filterPanel.add(mCategoryCB, cc.xyw(8, 1, 2));


    JPanel namePanel = new JPanel(new BorderLayout());


    namePanel.add(new JLabel(mLocalizer.msg("filterText",
        "With the following Text")
        + ": "), BorderLayout.WEST);

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    mToSpinner.setValue(mEndDays);
    content.add(mToSpinner, cc.xy(3, currentRow));
    content.add(new JLabel(mLocalizer.msg("to.2", "days")), cc
        .xy(5, currentRow));


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

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