package net.rectang;import java.awt.Graphics;import java.awt.event.KeyEvent;import java.awt.event.KeyListener;import javax.swing.JPanel;public class RectangThread extends Thread implements KeyListener{	public static final int SIZE = 10;	private int windowWidth = 0;	private int windowHeight = 0;	private IndexLocation indexLocation = null;	private Rectangle rectangle = null;	private Index startIndex = null;	private Graphics graphics = null;	private JPanel workPanel = null;	private boolean flag = true;		public static final int MOVE_RIGHT = 1;	public static final int MOVE_LEFT = 2;	public static final int MOVE_DOWN = 3;	public static final int CHANGE = 4;	public static final int NATURE_DOWN = 5;	private int derector = NATURE_DOWN;		public RectangThread(Index startIndex, JPanel workPanel) {		super();		this.startIndex = startIndex;		this.workPanel = workPanel;		this.flag = true;			}	@Override	public void run() {		graphics = workPanel.getGraphics();		windowWidth = workPanel.getWidth();		windowHeight = workPanel.getHeight();		rectangle = new Rectangle();		indexLocation = rectangle.getAllLocation();		workPanel.setFocusable(true);				while(flag){			synchronized (graphics) {						clearRectang(indexLocation);				move(derector, indexLocation);				drawRectang(indexLocation);				try {					sleep(400);				} catch (InterruptedException e) {					e.printStackTrace();				}			}		}		try {			join();		} catch (InterruptedException e) {			e.printStackTrace();		}	}	private void clearRectang(IndexLocation indexLocation){		graphics.clearRect(indexLocation.getIndexOne().getLocationX(), indexLocation.getIndexOne().getLocationY(), SIZE, SIZE);		graphics.clearRect(indexLocation.getIndexTwo().getLocationX(), indexLocation.getIndexTwo().getLocationY(), SIZE, SIZE);		graphics.clearRect(indexLocation.getIndexThree().getLocationX(), indexLocation.getIndexThree().getLocationY(), SIZE, SIZE);		graphics.clearRect(indexLocation.getIndexFour().getLocationX(), indexLocation.getIndexFour().getLocationY(), SIZE, SIZE);		}	private void drawRectang(IndexLocation indexLocation){		graphics.fillRect(indexLocation.getIndexOne().getLocationX(), indexLocation.getIndexOne().getLocationY(), SIZE, SIZE);		graphics.fillRect(indexLocation.getIndexTwo().getLocationX(), indexLocation.getIndexTwo().getLocationY(), SIZE, SIZE);		graphics.fillRect(indexLocation.getIndexThree().getLocationX(), indexLocation.getIndexThree().getLocationY(), SIZE, SIZE);		graphics.fillRect(indexLocation.getIndexFour().getLocationX(), indexLocation.getIndexFour().getLocationY(), SIZE, SIZE);		}	public void move(int derector, IndexLocation indexLocation) {		if(derector == RectangThread.MOVE_RIGHT){			indexLocation.getIndexOne().setLocationX(indexLocation.getIndexOne().getLocationX() + SIZE);			indexLocation.getIndexTwo().setLocationX(indexLocation.getIndexTwo().getLocationX() + SIZE);			indexLocation.getIndexThree().setLocationX(indexLocation.getIndexThree().getLocationX() + SIZE);			indexLocation.getIndexFour().setLocationX(indexLocation.getIndexFour().getLocationX() + SIZE);		}else if(derector == RectangThread.MOVE_LEFT){			indexLocation.getIndexOne().setLocationX(indexLocation.getIndexOne().getLocationX() - SIZE);			indexLocation.getIndexTwo().setLocationX(indexLocation.getIndexTwo().getLocationX() - SIZE);			indexLocation.getIndexThree().setLocationX(indexLocation.getIndexThree().getLocationX() - SIZE);			indexLocation.getIndexFour().setLocationX(indexLocation.getIndexFour().getLocationX() - SIZE);		}else if(derector == RectangThread.MOVE_DOWN){					}else if(derector == RectangThread.CHANGE){					}	else if(derector == RectangThread.NATURE_DOWN){			indexLocation.getIndexOne().setLocationY(indexLocation.getIndexOne().getLocationY() + SIZE);			indexLocation.getIndexTwo().setLocationY(indexLocation.getIndexTwo().getLocationY() + SIZE);			indexLocation.getIndexThree().setLocationY(indexLocation.getIndexThree().getLocationY() + SIZE);			indexLocation.getIndexFour().setLocationY(indexLocation.getIndexFour().getLocationY() + SIZE);		}	}		public boolean isFlag() {		return flag;	}	public void setFlag(boolean flag) {		this.flag = flag;	}	public int getWindowWidth() {		return windowWidth;	}	public void setWindowWidth(int windowWidth) {		this.windowWidth = windowWidth;	}	public int getWindowHeight() {		return windowHeight;	}	public void setWindowHeight(int windowHeight) {		this.windowHeight = windowHeight;	}	public IndexLocation getIndexLocation() {		return indexLocation;	}	public void setIndexLocation(IndexLocation indexLocation) {		this.indexLocation = indexLocation;	}	public Rectangle getRectangle() {		return rectangle;	}	public void setRectangle(Rectangle rectangle) {		this.rectangle = rectangle;	}	public Index getStartIndex() {		return startIndex;	}	public void setStartIndex(Index startIndex) {		this.startIndex = startIndex;	}	public Graphics getGraphics() {		return graphics;	}	public void setGraphics(Graphics graphics) {		this.graphics = graphics;	}	public JPanel getWorkPanel() {		return workPanel;	}	public void setWorkPanel(JPanel workPanel) {		this.workPanel = workPanel;	}	public void keyPressed(KeyEvent e) {		if(e.getKeyCode() == KeyEvent.VK_RIGHT){			derector = MOVE_RIGHT;		}else if(e.getKeyCode() == KeyEvent.VK_LEFT){			derector = MOVE_LEFT;		}else if(e.getKeyCode() == KeyEvent.VK_DOWN){			derector = MOVE_DOWN;		}else if(e.getKeyCode() == KeyEvent.VK_UP || e.getKeyCode() == KeyEvent.VK_ALT){			derector = CHANGE;		}else{			derector = NATURE_DOWN;		}	}	public void keyReleased(KeyEvent e) {			}	public void keyTyped(KeyEvent e) {			}}