Source Code : Custom Border Sample

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Custom Border Sample

   

import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Container;

import javax.swing.DefaultListCellRenderer;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JScrollPane;
import javax.swing.ListCellRenderer;
import javax.swing.border.Border;
import javax.swing.border.EmptyBorder;
import javax.swing.border.LineBorder;
import javax.swing.border.TitledBorder;

public class CustomBorderSample {
  public static void main(String args[]) {
    String labels[] = { "A", "B", "C", "D","E", "F", "G", "H","I", "J" };
    JFrame frame = new JFrame("Custom Border");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    Container contentPane = frame.getContentPane();
    JList jlist = new JList(labels);
    ListCellRenderer renderer = new FocusedTitleListCellRenderer();
    jlist.setCellRenderer(renderer);
    JScrollPane sp = new JScrollPane(jlist);
    contentPane.add(sp, BorderLayout.CENTER);
    frame.setSize(300, 200);
    frame.setVisible(true);
  }
}

class FocusedTitleListCellRenderer implements ListCellRenderer {
  protected static Border noFocusBorder = new EmptyBorder(15, 1, 1, 1);

  protected static TitledBorder focusBorder = new TitledBorder(LineBorder
      .createGrayLineBorder(), "Focused");

  protected DefaultListCellRenderer defaultRenderer = new DefaultListCellRenderer();

  public String getTitle() {
    return focusBorder.getTitle();
  }

  public void setTitle(String newValue) {
    focusBorder.setTitle(newValue);
  }

  public Component getListCellRendererComponent(JList list, Object value,
      int index, boolean isSelected, boolean cellHasFocus) {
    JLabel renderer = (JLabel) defaultRenderer
        .getListCellRendererComponent(list, value, index, isSelected,
            cellHasFocus);
    renderer.setBorder(cellHasFocus ? focusBorder : noFocusBorder);
    return renderer;
  }
}

           
         
    
    
  

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