Java编程基础、应用与实例

import java.awt.*; import java.net.*; import java.io.*; import java.util.*; import java.awt.event.*; import java.awt.geom.*; class OmokBoard extends Canvas{ public static final int BLACK=1, WHITE=-1; private int[][] map; private int size, cell; private String info="게임 중지"; private int color=BLACK; private boolean enable=false; private boolean running=false; private PrintWriter writer; private Graphics gboard, gbuff; private Image buff; OmokBoard(int s, int c){ this.size=s;this.cell=c; map=new int[size+2][]; for(int i=0;i<map.length;i++) map[i]=new int[size+2]; setBackground(new Color(200,200,100)); setSize(size*(cell+1)+size, size*(cell+1)+size); addMouseListener(new MouseAdapter(){ public void mousePressed(MouseEvent me){ if(!enable)return; int x=(int)Math.round(me.getX()/(double)cell); int y=(int)Math.round(me.getY()/(double)cell); if(x==0 || y==0 || x==size+1 || y==size+1)return; if(map[x][y]==BLACK || map[x][y]==WHITE)return; writer.println("[STONE]"+x+" "+y); map[x][y]=color; if(check(new Point(x, y), color)){ info="이겼습니다."; writer.println("[WIN]"); } else info="상대가 두기를 기다립니다."; repaint(); enable=false; } }); } public boolean isRunning(){ return running; } public void startGame(String col){ running=true; if(col.equals("BLACK")){ enable=true; color=BLACK; info="게임 시작... 두세요."; } else{ enable=false; color=WHITE; info="게임 시작... 기다리세요."; } } public void stopGame(){ reset(); writer.println("[STOPGAME]"); enable=false; running=false; } public void putOpponent(int x, int y){ map[x][y]=-color; info="상대가 두었습니다. 두세요."; repaint(); } public void setEnable(boolean enable){ this.enable=enable; } public void setWriter(PrintWriter writer){ this.writer=writer; } public void update(Graphics g){ paint(g); } public void paint(Graphics g){ if(gbuff==null){ buff=createImage(getWidth(),getHeight()); gbuff=buff.getGraphics(); } drawBoard(g); } public void reset(){ for(int i=0;i<map.length;i++) for(int j=0;j<map[i].length;j++) map[i][j]=0; info="게임 중지"; repaint(); } private void drawLine(){ gbuff.setColor(Color.black); for(int i=1; i<=size;i++){ gbuff.drawLine(cell, i*cell, cell*size, i*cell); gbuff.drawLine(i*cell, cell, i*cell , cell*size); } } private void drawBlack(int x, int y){ Graphics2D gbuff=(Graphics2D)this.gbuff; gbuff.setColor(Color.black); gbuff.fillOval(x*cell-cell/2, y*cell-cell/2, cell, cell); gbuff.setColor(Color.white); gbuff.drawOval(x*cell-cell/2, y*cell-cell/2, cell, cell); } private void drawWhite(int x, int y){ gbuff.setColor(Color.white); gbuff.fillOval(x*cell-cell/2, y*cell-cell/2, cell, cell); gbuff.setColor(Color.black); gbuff.drawOval(x*cell-cell/2, y*cell-cell/2, cell, cell); } private void drawStones(){ for(int x=1; x<=size;x++) for(int y=1; y<=size;y++){ if(map[x][y]==BLACK) drawBlack(x, y); else if(map[x][y]==WHITE) drawWhite(x, y); } } synchronized private void drawBoard(Graphics g){ gbuff.clearRect(0, 0, getWidth(), getHeight()); drawLine(); drawStones(); gbuff.setColor(Color.red); gbuff.drawString(info, 20, 15); g.drawImage(buff, 0, 0, this); } private boolean check(Point p, int col){ if(count(p, 1, 0, col)+count(p, -1, 0, col)==4) return true; if(count(p, 0, 1, col)+count(p, 0, -1, col)==4) return true; if(count(p, -1, -1, col)+count(p, 1, 1, col)==4) return true; if(count(p, 1, -1, col)+count(p, -1, 1, col)==4) return true; return false; } private int count(Point p, int dx, int dy, int col){ int i=0; for(; map[p.x+(i+1)*dx][p.y+(i+1)*dy]==col ;i++); return i; } } public class OmokClient extends Frame implements Runnable, ActionListener{ private TextArea msgView=new TextArea("", 1,1,1); private TextField sendBox=new TextField(""); private TextField nameBox=new TextField(); private TextField roomBox=new TextField("0"); private Label pInfo=new Label("대기실: 명"); private java.awt.List pList=new java.awt.List(); private Button startButton=new Button("대국 시작"); private Button stopButton=new Button("기권"); private Button enterButton=new Button("입장 하기"); private Button exitButton=new Button("대기실로"); private Label infoView=new Label("< 생각하는 자바 >", 1); private OmokBoard board=new OmokBoard(15,30); private BufferedReader reader; private PrintWriter writer; private Socket socket; private int roomNumber=-1; private String userName=null; public OmokClient(String title){ super(title); setLayout(null); msgView.setEditable(false); infoView.setBounds(10,30,480,30); infoView.setBackground(new Color(200,200,255)); board.setLocation(10,70); add(infoView); add(board); Panel p=new Panel(); p.setBackground(new Color(200,255,255)); p.setLayout(new GridLayout(3,3)); p.add(new Label("이 름:", 2));p.add(nameBox); p.add(new Label("방 번호:", 2)); p.add(roomBox); p.add(enterButton); p.add(exitButton); enterButton.setEnabled(false); p.setBounds(500,30, 250,70); Panel p2=new Panel(); p2.setBackground(new Color(255,255,100)); p2.setLayout(new BorderLayout()); Panel p2_1=new Panel(); p2_1.add(startButton); p2_1.add(stopButton); p2.add(pInfo,"North"); p2.add(pList,"Center"); p2.add(p2_1,"South"); startButton.setEnabled(false); stopButton.setEnabled(false); p2.setBounds(500,110,250,180); Panel p3=new Panel(); p3.setLayout(new BorderLayout()); p3.add(msgView,"Center"); p3.add(sendBox, "South"); p3.setBounds(500, 300, 250,250); add(p); add(p2); add(p3); sendBox.addActionListener(this); enterButton.addActionListener(this); exitButton.addActionListener(this); startButton.addActionListener(this); stopButton.addActionListener(this); addWindowListener(new WindowAdapter(){ public void windowClosing(WindowEvent we){ System.exit(0); } }); } public void actionPerformed(ActionEvent ae){ if(ae.getSource()==sendBox){ String msg=sendBox.getText(); if(msg.length()==0)return; if(msg.length()>=30)msg=msg.substring(0,30); try{ writer.println("[MSG]"+msg); sendBox.setText(""); }catch(Exception ie){} } else if(ae.getSource()==enterButton){ try{ if(Integer.parseInt(roomBox.getText())<1){ infoView.setText("방번호가 잘못되었습니다. 1이상"); return; } writer.println("[ROOM]"+Integer.parseInt(roomBox.getText())); msgView.setText(""); }catch(Exception ie){ infoView.setText("입력하신 사항에 오류가 았습니다."); } } else if(ae.getSource()==exitButton){ try{ goToWaitRoom(); startButton.setEnabled(false); stopButton.setEnabled(false); }catch(Exception e){} } else if(ae.getSource()==startButton){ try{ writer.println("[START]"); infoView.setText("상대의 결정을 기다립니다."); startButton.setEnabled(false); }catch(Exception e){} } else if(ae.getSource()==stopButton){ try{ writer.println("[DROPGAME]"); endGame("기권하였습니다."); }catch(Exception e){} } } void goToWaitRoom(){ if(userNam