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Institute of Ambient Intelligence 2009, Choi, Namseok, Dongseo Univ., Java 기초 ( 컴포넌트와 이벤트 처리 프로그래밍 ) 2009. 11. 27 Choi,

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Presentation on theme: "Institute of Ambient Intelligence 2009, Choi, Namseok, Dongseo Univ., Java 기초 ( 컴포넌트와 이벤트 처리 프로그래밍 ) 2009. 11. 27 Choi,"— Presentation transcript:

1 Institute of Ambient Intelligence 2009, Choi, Namseok, Dongseo Univ., E-mail : sugi@dit.dongseo.ac.kr Java 기초 ( 컴포넌트와 이벤트 처리 프로그래밍 ) 2009. 11. 27 Choi, Namseok http://sugi.pe.kr

2 2 Institute of Ambient Intelligence 2009, Choi, Namseok, Dongseo Univ., E-mail : sugi@dit.dongseo.ac.kr Last  Panel 클래스  주변 클래스들  AWT 관련 컴포넌트

3 3 Institute of Ambient Intelligence 2009, Choi, Namseok, Dongseo Univ., E-mail : sugi@dit.dongseo.ac.kr Contents  AWT 관련 컴포넌트  AWT 컴포넌트 이벤트 처리  Event 관련 패키지와 적용범위  Event 작성법  자주 사용되는 Event 클래스

4 4 Institute of Ambient Intelligence 2009, Choi, Namseok, Dongseo Univ., E-mail : sugi@dit.dongseo.ac.kr Event 관련 패키지와 적용범위  Event Handler 란 ? (java.awt.event)  각 컴포넌트에 대해 특정 행위를 하였을 때에 대한 작업을 처리할 수 있는 것.  각 컴포넌트 별 처리 이벤트  add 로 시작하여 Listener 로 끝나는 메서드  이벤트 관련 클래스  Listener 인터페이스, Adapter 클래스, Event 클래스

5 5 Institute of Ambient Intelligence 2009, Choi, Namseok, Dongseo Univ., E-mail : sugi@dit.dongseo.ac.kr Event 작성법  Event Handler 클래스 생성법 4 가지  Listener 클래스를 구현하는 방법  Adapter 클래스를 상속받는 방법  Frame 클래스에 Listener 를 구현하는 방법  익명 중첩 클래스를 사용하는 방법  Event 작성법  처리하고자 하는 종류의 Event 클래스 생성  컴포넌트에 대해 관련 Event 를 추가  이벤트 관련 클래스  Listener 인터페이스, Adapter 클래스, Event 클래스

6 6 Institute of Ambient Intelligence 2009, Choi, Namseok, Dongseo Univ., E-mail : sugi@dit.dongseo.ac.kr Event 작성법  Listener 클래스를 구현하는 방법

7 7 Institute of Ambient Intelligence 2009, Choi, Namseok, Dongseo Univ., E-mail : sugi@dit.dongseo.ac.kr Event 작성법  Listener 클래스를 구현하는 방법 import java.awt.*; import java.awt.event.*; class Exam_01_Sub extends Frame{ private Button bt = new Button(" 확인 "); private GridBagLayout gbl = new GridBagLayout(); public Exam_01_Sub(String title) { super(title); this.init();// 화면초기화 this.start();// Event 추가 or Thread 추가 }

8 8 Institute of Ambient Intelligence 2009, Choi, Namseok, Dongseo Univ., E-mail : sugi@dit.dongseo.ac.kr Event 작성법  Listener 클래스를 구현하는 방법 public void init() { this.setLayout(gbl); this.add(bt); } public void start() { A ap = new A(); bt.addActionListener(ap);// 버튼이 클릭하는 이벤트가 일어나 게 되면 ?? } class A implements ActionListener { public void actionPerformed(ActionEvent e) { System.exit(0); }

9 9 Institute of Ambient Intelligence 2009, Choi, Namseok, Dongseo Univ., E-mail : sugi@dit.dongseo.ac.kr Event 작성법  Adapter 클래스를 상속받는 방법

10 10 Institute of Ambient Intelligence 2009, Choi, Namseok, Dongseo Univ., E-mail : sugi@dit.dongseo.ac.kr Event 작성법  Adapter 클래스를 상속받는 방법 import java.awt.*; import java.awt.event.*; class Exam_01_Sub extends Frame{ private Button bt = new Button(" 확인 "); private GridBagLayout gbl = new GridBagLayout(); public Exam_01_Sub(String title) { super(title); this.init();// 화면초기화 this.start();// Event 추가 or Thread 추가 }

11 11 Institute of Ambient Intelligence 2009, Choi, Namseok, Dongseo Univ., E-mail : sugi@dit.dongseo.ac.kr Event 작성법  Adapter 클래스를 상속받는 방법 public void init() { this.setLayout(gbl); this.add(bt); } public void start() { A ap = new A(); bt.addMouseListener(ap);// 버튼이 클릭하는 이벤트가 일어나 게 되면 ?? } class A extends MouseAdapter { public void mouseClicked(MouseEvent e) { System.exit(0); }

12 12 Institute of Ambient Intelligence 2009, Choi, Namseok, Dongseo Univ., E-mail : sugi@dit.dongseo.ac.kr Event 작성법  Frame 클래스에 Listener 를 구현하는 방법 import java.awt.*; import java.awt.event.*; class Exam_01_Sub extends Frame implements MouseListener{ private Button bt = new Button(" 확인 "); private GridBagLayout gbl = new GridBagLayout(); public Exam_01_Sub(String title) { super(title); this.init();// 화면초기화 this.start();// Event 추가 or Thread 추가 }

13 13 Institute of Ambient Intelligence 2009, Choi, Namseok, Dongseo Univ., E-mail : sugi@dit.dongseo.ac.kr Event 작성법  Frame 클래스에 Listener 를 구현하는 방법 public void init() { this.setLayout(gbl); this.add(bt); } public void start() { bt.addMouseListener(this);// 버튼이 클릭하는 이벤트가 일어나 게 되면 ?? } public void mouseClicked(MouseEvent e) { System.exit(0); } public void mousePressed(MouseEvent e) {} public void mouseReleased(MouseEvent e) {} public void mouseEntered(MouseEvent e) {} public void mouseExited(MouseEvent e) {} }

14 14 Institute of Ambient Intelligence 2009, Choi, Namseok, Dongseo Univ., E-mail : sugi@dit.dongseo.ac.kr Event 작성법  익명 중첩 클래스를 사용하는 방법 import java.awt.*; import java.awt.event.*; class Exam_01_Sub extends Frame { private Button bt = new Button(" 확인 "); private GridBagLayout gbl = new GridBagLayout(); public Exam_01_Sub(String title) { super(title); this.init();// 화면초기화 this.start();// Event 추가 or Thread 추가 }

15 15 Institute of Ambient Intelligence 2009, Choi, Namseok, Dongseo Univ., E-mail : sugi@dit.dongseo.ac.kr Event 작성법  익명 중첩 클래스를 사용하는 방법 public void init() { this.setLayout(gbl); this.add(bt); } public void start() { MouseAdapter ma = new MouseAdapter() { public void mouseClicked(MouseEvent e) { System.exit(0); } }; bt.addMouseListener(ma);// 버튼이 클릭하는 이벤트가 일어나 게 되면 ?? }

16 16 Institute of Ambient Intelligence 2009, Choi, Namseok, Dongseo Univ., E-mail : sugi@dit.dongseo.ac.kr 자주 사용되는 Event 클래스  Event 활용 범위  ActionListener : 버튼클릭, 메뉴선택 등  WindowAdapter 와 WindowListener : Frame 관련  MouseAdapter 와 MouseListener : 마우스 클릭 등 마우스 관련  MouseMotionAdapter 와 MouseMotionListener : 마우스 움직임 관련  KeyAdapter 와 KeyListener : 키 관련  FocusAdapter 와 FocusListener : 포커스 관련  ItemListener : List 나 Choice 에서의 아이템 관련

17 17 Institute of Ambient Intelligence 2009, Choi, Namseok, Dongseo Univ., E-mail : sugi@dit.dongseo.ac.kr 자주 사용되는 Event 클래스  ActionListener : 버튼클릭, 메뉴선택 등 import java.awt.*; import java.awt.event.*; class Exam_01_Sub extends Frame { private Button bt = new Button(" 확인 "); private GridBagLayout gbl = new GridBagLayout(); public Exam_01_Sub(String title) { super(title); this.init();// 화면초기화 this.start();// Event 추가 or Thread 추가 }

18 18 Institute of Ambient Intelligence 2009, Choi, Namseok, Dongseo Univ., E-mail : sugi@dit.dongseo.ac.kr 자주 사용되는 Event 클래스  ActionListener : 버튼클릭, 메뉴선택 등 import java.awt.*; import java.awt.event.*; class Exam_02_Sub extends Frame implements ActionListener{ private MenuBar mb = new MenuBar(); private Menu file = new Menu("FILE"); private MenuItem fopen = new MenuItem("OPEN"); private MenuItem fsave = new MenuItem("SAVE"); private FileDialog fdlg1 = new FileDialog(this, " 내꺼 열기 ", FileDialog.LOAD); private FileDialog fdlg2 = new FileDialog(this, " 내꺼 저장 ", FileDialog.SAVE);

19 19 Institute of Ambient Intelligence 2009, Choi, Namseok, Dongseo Univ., E-mail : sugi@dit.dongseo.ac.kr 자주 사용되는 Event 클래스  ActionListener : 버튼클릭, 메뉴선택 등 public Exam_02_Sub(String title) { super(title); this.init(); this.start(); super.setSize(300, 200); Dimension screen = Toolkit.getDefaultToolkit().getScreenSize(); Dimension frm = super.getSize(); int xpos = (int)(screen.getWidth() / 2 - frm.getWidth() / 2); int ypos = (int)(screen.getHeight() / 2 - frm.getHeight() / 2); super.setLocation(xpos, ypos); super.setResizable(false); super.setVisible(true); }

20 20 Institute of Ambient Intelligence 2009, Choi, Namseok, Dongseo Univ., E-mail : sugi@dit.dongseo.ac.kr 자주 사용되는 Event 클래스  ActionListener : 버튼클릭, 메뉴선택 등 public void init() { file.add(fopen); file.add(fsave); mb.add(file); this.setMenuBar(mb); } public void start() { fopen.addActionListener(this); fsave.addActionListener(this); } public void actionPerformed(ActionEvent e) { if(e.getSource() == fopen) fdlg1.setVisible(true); else if(e.getSource() == fsave) fdlg2.setVisible(true); }

21 21 Institute of Ambient Intelligence 2009, Choi, Namseok, Dongseo Univ., E-mail : sugi@dit.dongseo.ac.kr 자주 사용되는 Event 클래스  ActionListener : 버튼클릭, 메뉴선택 등 public class Exam_02 { public static void main(String[] ar) { Exam_02_Sub ex = new Exam_02_Sub(" 제목 "); }

22 22 Institute of Ambient Intelligence 2009, Choi, Namseok, Dongseo Univ., E-mail : sugi@dit.dongseo.ac.kr 자주 사용되는 Event 클래스  WindowAdapter 와 WindowListener : Frame 관련 import java.awt.*; import java.awt.event.*; class Exam_02_Sub extends Frame implements ActionListener,WindowListener { public void start() { this.addWindowListener(this); } public void windowClosing(WindowEvent e) { System.exit(0); } public void windowClosed(WindowEvent e) {} public void windowOpened(WindowEvent e) {} public void windowActivated(WindowEvent e) {} public void windowDeactivated(WindowEvent e) {} public void windowIconified(WindowEvent e) {} public void windowDeiconified(WindowEvent e) {} }

23 23 Institute of Ambient Intelligence 2009, Choi, Namseok, Dongseo Univ., E-mail : sugi@dit.dongseo.ac.kr 자주 사용되는 Event 클래스  MouseAdapter 와 MouseListener : 마우스 클릭 등 마우스 관련 import java.awt.*; import java.awt.event.*; class Exam_03_Sub extends Frame implements MouseListener, MouseMotionListener{ private Label lb = new Label("x = 000, y = 000"); private Button bt = new Button(" 확인 "); private BorderLayout bl = new BorderLayout(); public Exam_03_Sub(String title) { super(title); this.init(); this.start();

24 24 Institute of Ambient Intelligence 2009, Choi, Namseok, Dongseo Univ., E-mail : sugi@dit.dongseo.ac.kr 자주 사용되는 Event 클래스  MouseAdapter 와 MouseListener : 마우스 클릭 등 마우스 관련 super.setSize(300, 200); Dimension screen = Toolkit.getDefaultToolkit().getScreenSize(); Dimension frm = super.getSize(); int xpos = (int)(screen.getWidth() / 2 - frm.getWidth() / 2); int ypos = (int)(screen.getHeight() / 2 - frm.getHeight() / 2); super.setLocation(xpos, ypos); super.setResizable(false); super.setVisible(true); } public void init() { this.setLayout(bl); this.add("North", lb); this.add("South", bt); }

25 25 Institute of Ambient Intelligence 2009, Choi, Namseok, Dongseo Univ., E-mail : sugi@dit.dongseo.ac.kr 자주 사용되는 Event 클래스  MouseAdapter 와 MouseListener : 마우스 클릭 등 마우스 관련 public void start() { bt.addMouseListener(this); this.addMouseMotionListener(this); } public void mouseClicked(MouseEvent e) {} public void mouseEntered(MouseEvent e) { if(e.getSource() == bt) { bt.setLabel(" 버튼위에 마우스가 있네요 !"); } public void mouseExited(MouseEvent e) { if(e.getSource() == bt) { bt.setLabel(" 확인 "); }

26 26 Institute of Ambient Intelligence 2009, Choi, Namseok, Dongseo Univ., E-mail : sugi@dit.dongseo.ac.kr 자주 사용되는 Event 클래스  MouseAdapter 와 MouseListener : 마우스 클릭 등 마우스 관련 public void mousePressed(MouseEvent e) {} public void mouseReleased(MouseEvent e) {} public void mouseDragged(MouseEvent e) { if(e.getSource() == this) { int x = e.getX(); int y = e.getY(); lb.setText("x = " + x + ", y = " + y); } public void mouseMoved(MouseEvent e) {} } public class Exam_03 { public static void main(String[] ar) { Exam_03_Sub ex = new Exam_03_Sub(" 제목 "); }

27 27 Institute of Ambient Intelligence 2009, Choi, Namseok, Dongseo Univ., E-mail : sugi@dit.dongseo.ac.kr 자주 사용되는 Event 클래스  KeyAdapter 와 KeyListener : 키 관련  FocusAdapter 와 FocusListener : 포커스 관련  ItemListener : List 나 Choice 에서의 아이템 관련 class Exam_04_Sub extends Frame implements FocusListener, KeyListener, ItemListener{ private TextField tf1 = new TextField(); private TextField tf2 = new TextField(); private Label lb1 = new Label("NONE : ", Label.RIGHT); private Label lb2 = new Label("NONE"); private Choice ch = new Choice(); private Label lb3 = new Label("NONE"); private GridLayout gl = new GridLayout(4, 1); private Panel p1 = new Panel(); private GridLayout gl1 = new GridLayout(1, 2, 5, 5); private GridLayout gl2 = new GridLayout(1, 2, 5, 5); private Panel p2 = new Panel();

28 28 Institute of Ambient Intelligence 2009, Choi, Namseok, Dongseo Univ., E-mail : sugi@dit.dongseo.ac.kr 자주 사용되는 Event 클래스  키 관련, 포커스 관련, List 나 Choice 에서의 아이템 관련 public Exam_04_Sub(String title) { super(title); this.init(); this.start(); super.setSize(250, 120); Dimension screen = Toolkit.getDefaultToolkit().getScreenSize(); Dimension frm = super.getSize(); int xpos = (int)(screen.getWidth() / 2 - frm.getWidth() / 2); int ypos = (int)(screen.getHeight() / 2 - frm.getHeight() / 2); super.setLocation(xpos, ypos); super.setResizable(false); super.setVisible(true); }

29 29 Institute of Ambient Intelligence 2009, Choi, Namseok, Dongseo Univ., E-mail : sugi@dit.dongseo.ac.kr 자주 사용되는 Event 클래스  키 관련, 포커스 관련, List 나 Choice 에서의 아이템 관련 public void init() { this.setLayout(gl); p1.setLayout(gl1); p1.add(tf1); p1.add(tf2); this.add(p1); p2.setLayout(gl2); p2.add(lb1); p2.add(lb2); this.add(p2); ch.add("NONE"); for(char c = 'A'; c <= 'Z'; c++) { String str = "" + c + c + c; ch.add(str); } this.add(ch); this.add(lb3); }

30 30 Institute of Ambient Intelligence 2009, Choi, Namseok, Dongseo Univ., E-mail : sugi@dit.dongseo.ac.kr 자주 사용되는 Event 클래스  키 관련, 포커스 관련, List 나 Choice 에서의 아이템 관련 public void start() { tf1.addFocusListener(this); tf2.addFocusListener(this); tf1.addKeyListener(this); tf2.addKeyListener(this); ch.addItemListener(this); } public void focusGained(FocusEvent e) { if(e.getSource() == tf1) { lb1.setText(" 첫번째 TextField 위치 : "); } else if(e.getSource() == tf2) { lb1.setText(" 두번째 TextField 위치 : "); }

31 31 Institute of Ambient Intelligence 2009, Choi, Namseok, Dongseo Univ., E-mail : sugi@dit.dongseo.ac.kr 자주 사용되는 Event 클래스  키 관련, 포커스 관련, List 나 Choice 에서의 아이템 관련 public void focusLost(FocusEvent e) {} public void keyPressed(KeyEvent e) {} public void keyReleased(KeyEvent e) { if(e.getSource() == tf1) { int cnt = tf1.getText().trim().length(); lb2.setText(cnt + " 개 "); } else if(e.getSource() == tf2) { int cnt = tf2.getText().trim().length(); lb2.setText(cnt + " 개 "); } public void keyTyped(KeyEvent e) {} public void itemStateChanged(ItemEvent e) { if(e.getSource() == ch) { String str = ch.getSelectedItem(); lb3.setText(" 선택된 내용 = " + str); }}}

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