Display colors from an Android Colors.xml content

AndroidColors.java

package com.fiskur.androidcolours;

import java.awt.Color;
import java.awt.Component;
import java.awt.Font;
import java.util.Scanner;
import javax.swing.DefaultListModel;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.ListCellRenderer;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;

public class AndroidColours extends javax.swing.JFrame {
    private javax.swing.JList coloursList;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JScrollPane jScrollPane2;
    private javax.swing.JTextArea textArea;
    private final DefaultListModel colorListModel = new DefaultListModel();

    public AndroidColours() {
        initComponents();
        coloursList.setCellRenderer(new ColorCellRenderer());
        textArea.getDocument().addDocumentListener(new DocumentListener() {

            @Override
            public void insertUpdate(DocumentEvent e) {
                getColors();
            }

            @Override
            public void removeUpdate(DocumentEvent e) {
                getColors();
            }

            @Override
            public void changedUpdate(DocumentEvent e) {
                getColors();
            }
        });
    }

    @SuppressWarnings("unchecked")
    private void initComponents() {
        jScrollPane1 = new javax.swing.JScrollPane();
        textArea = new javax.swing.JTextArea();
        jScrollPane2 = new javax.swing.JScrollPane();
        coloursList = new javax.swing.JList();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        textArea.setColumns(20);
        textArea.setRows(5);
        jScrollPane1.setViewportView(textArea);

        coloursList.setModel(colorListModel);
        jScrollPane2.setViewportView(coloursList);

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(jScrollPane1)
                    .addComponent(jScrollPane2, javax.swing.GroupLayout.DEFAULT_SIZE, 388, Short.MAX_VALUE))
                .addContainerGap())
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jScrollPane2, javax.swing.GroupLayout.DEFAULT_SIZE, 199, Short.MAX_VALUE)
                .addContainerGap())
        );

        pack();
    }                    

    private void getColors(){
        colorListModel.clear();
        String colorXML = textArea.getText();
        Scanner scanner = new Scanner(colorXML);
        while (scanner.hasNextLine()) {
            String line = scanner.nextLine();
            if(line.contains("<color name=")){
                colorListModel.addElement(line);
            }
        }
    }
    public static void main(String args[]) {
        try {
            UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
        } 
        catch (UnsupportedLookAndFeelException | ClassNotFoundException | InstantiationException | IllegalAccessException e) {
        }

        java.awt.EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                new AndroidColours().setVisible(true);
            }
        });
    }

    class ColorCellRenderer extends JLabel implements ListCellRenderer {
        public ColorCellRenderer() {
            setOpaque(true);
            setFont(new Font(Font.MONOSPACED, Font.PLAIN, 16));
        }
        @Override
        public Component getListCellRendererComponent(JList paramlist, Object value, int index, boolean isSelected, boolean cellHasFocus) {
            String content = value.toString();
            if(content.contains("<color name=\"")){
                String label = content.substring(content.indexOf("name=\"") + 6, content.indexOf("\">"));
                String color = content.substring(content.indexOf("\">") + 3, content.indexOf("</color>"));   
                Color col = Color.decode("0x" + color);
                if(col.getRGB() == -1){
                    setForeground(Color.decode("0x666666"));
                }else{
                    setForeground(Color.decode("0xffffff"));
                }
                setBackground(col);
                
                setText("#" + color + ": " + label);
            }else{
                setBackground(Color.GRAY);
                setText(value.toString());
            }
            
            return this;
        }
    }
}