홍대 자바 수업 : 리스트형(스크롤형) 버튼 텍스트 필드 컬러와 배경 색 바꾸기 .

import javax.swing.*;
import javax.swing.event.*;
import java.util.*;

public class ListTest extends JFrame {
   private JTextField text;
   private JList colorList;
   Random ra =new Random(System.currentTimeMillis());

   
   private Container container;
   private final String colorNames[] = { "Black", "Blue", "Cyan", 
      "Dark Gray", "Gray", "Green", "Light Gray", "Magenta",
      "Orange", "Pink", "Red", "White", "Yellow" };
   private final Color colors[] = { Color.BLACK, Color.BLUE, Color.CYAN, 
      Color.DARK_GRAY, Color.GRAY, Color.GREEN, Color.LIGHT_GRAY, 
      Color.MAGENTA, Color.ORANGE, Color.PINK, Color.RED, Color.WHITE, 
      Color.YELLOW };
   public ListTest()
   {
	   
      super( "Color Test" );
	  
      container = getContentPane();
      container.setLayout( new FlowLayout() );
      colorList = new JList( colorNames );
      colorList.setVisibleRowCount( 5 );  //보이는 버튼수
      colorList.setSelectionMode( ListSelectionModel.SINGLE_SELECTION );//하나만 선택
      container.add( new JScrollPane( colorList ) );
	  text=new JTextField(10);
	  container.add(text);
	  text.setFont( new Font( "굴림체", Font.PLAIN,38) );//폰트 체 등등 . 
	
      colorList.addListSelectionListener(
         new ListSelectionListener() {  // anonymous inner class 
            public void valueChanged( ListSelectionEvent event )
            {
				int a =ra.nextInt(13);//난수
               text.setText(colorNames[colorList.getSelectedIndex()]);
			   container.setBackground(colors [ colorList.getSelectedIndex() ]);//colorList.getSelectedIndex().toString();			   text.setBackground( 
                  colors[ a ] );
			   if (a>=12)
			   {
				   text.setForeground( 
                  colors[ a-6 ] );
			   }
			     else
				{	
				 text.setForeground( 
                  colors[ a+1 ] );
				}

            }
         } // end anonymous inner class
      ); // end call to addListSelectionListener
      setSize( 350, 150 );
      setVisible( true );
   } // end ListTest constructor
   public static void main( String args[] )
   { 
      ListTest application = new ListTest();
      application.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
   }
} // end class ListTest

//리스트 목록 뽑아 오기 
for (int i=0; i
 System.out.println(colorList.getModel().getElementAt(i).toString());
}