이벤트 클래스

내용

(1) WindowEvent

윈도우가 활성화, 또는 닫힐 때 발생.

(2) ComponentEvent

(3) ContainerEvent

컨테이너에 컴포넌트가 추가/삭제되는 경우 발생.

(4) HierarchyEvent

컴포넌트의 계층구조가 바뀔 때 발생.

(5) MouseEvent

마우스의 움직임에 의해 발생.

(6) MouseWheelEvent

마우스 휠의 움직임에 의해 발생.

(7) KeyEvent

커보드의 입력에 의해 발생.

(8) InputMethodEvnet

입력할 수 있는 멤소드에서 이벤트가 발생했을 때.

(9) FocusEvent

컴포넌트에 포거스가 되었을 때.

(10) InputEvent

거의 모든 입력에 대한 이벤트가 발생했을때.

(11) PaintEvent

컴포넌트가 그려질 때 발생.

(1) ActionEvent

버튼 클릭등의 동작

(2) AdjustmentEvent

스크롤바등의 위치가 바뀌었을때

(3) TextEvent

텍스트 내용이 바뀌었을때

(4) ItemEvent

항목의 상태가 바뀌었을때

컴포넌트

발생 이벤트

Adju

Acti

Cont

Focu

Key

Mous

Comp

Item

Wind

Text

1.Adjustable

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2. Applet

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3. Button

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4. Canvas

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5. Checkbox

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6. CheckboxMenuItem

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7. Choice

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8. Component

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9. Container

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10. Dialog

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11. FileDialog

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12. Frame

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13. Label

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14. List

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15. Menu

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16. MenuItem

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17. Panel

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18. PopupMenu

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19. Scrollbar

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20. ScrollPane

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컴포넌트

발생 이벤트

Adju

Acti

Cont

Focu

Key

Mous

Comp

Item

Wind

Text

21. TextArea

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22. TextComponent

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23. TextField

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24. Window

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Adju : AdjustmentEvent

Acti : ActionEvnet

Cont : ContainerEvnet

Focu : FocusEvent

Key : KeyEvent

Mous : MouseEvent

Comp : ComponentEvent

item : ItemEvent

Wind : WindowEvent

Text : TextEvent

Listener or Adapter

구현해야 할 메소드

ActionListener

actionPerformed(ActionEvent e)

AdjustmentListener

adjustmentValueChange(AdjustmentEvent e)

ComponentListener
ComponentAdapter

componentHidden(ComponentEvent e)
componentShown(ComponentEvent e)
componentMoved(ComponentEvent e)
componentResized(ComponentEvent e)

ContainerListener
ContainerAdapter

componentAdded(ContainerEvent e)
componentRemoved(ContainerEvent e)

FocusListener
FocosAdapter

focusGained(FocusEvent e)
focusLost(FocusEvent e)

ItemListener

itemStateChanged(ItemEvent e)

KeyListener
KeyAdapter

keyPressed(KeyEvent e)
keyReleased(KeyEvent e)
keyTyped(KeyEvent e)

MouseListener
MouseAdapter

mouseClicked(MouseEvent e)
mouseEntered(MouseEvent e)
mouseExited(MouseEvent e)
mousePressed(MouseEvent e)
mouseReleased(MouseEvent e)

MouseMotionListener
MouseMotionAdapter

mouseDragged(MouseEvent e)
mouseMoved(MouseEvent e)

WindowListener
WindowAdapter

windowOpened(WindowEvent e)
windowClosing(WindowEvent e)
windowClosed(WindowEvent e)
windowActivated(WindowEvent e)
windowDeactivated(WindowEvent e)
windowIconfied(WindowEvent e)
windowDeiconfied(WindowEvent e)

void actionPerformed(ActionEvent e)

반드시 구현해야 하며 이곳에서 이벤트에 대한 처리를 한다.

Object event_obj.getSource()

이벤트가 발생한 객체를 반환한다.

String event_obj.getActionCommand()

이벤트가 발생한 객체의 이름을 반환한다.

// ================================================================

// ActionListener Example

// make : pwg

// date : 2003

// note : 버튼을 클릭하거나, 리스트창에서 더블클릭하면

// 이벤트가 발생하여 텍스트 창에 내용이 표시된다.

// ----------------------------------------------------------------

// ActionEvent를 사용할 수 있는 컴포넌트

// Button, List, TextField, MenuItem, CheckboxMenuItem

// ================================================================

import java.awt.*;

import java.awt.event.*; // 필수

public class ActionListenerEx extends Frame implements ActionListener

{

Button exitButton,cancelButton;

List list;

TextArea text;

Panel panelA, panelB;

public ActionListenerEx()

{

setTitle("ActionListener");

panelA = new Panel(new FlowLayout(FlowLayout.LEFT,0,0));

panelB = new Panel(new GridLayout(2,1));

// panelA

exitButton = new Button("exit");

cancelButton = new Button("cancel");

panelA.add(exitButton);

panelA.add(cancelButton);

// panelB

list = new List(10);

text = new TextArea(5,40);

// list item

list.add("호랑이");

list.add("고양이");

list.add("강아지");

list.add("망아지");

list.add("새앙쥐");

//

panelB.add(list);

panelB.add(text);

// Event 추가

exitButton.addActionListener(this);

cancelButton.addActionListener(this);

list.addActionListener(this);

//

add(panelA,BorderLayout.NORTH);

add(panelB,BorderLayout.CENTER);

}

public static void main(String args[])

{

ActionListenerEx f=new ActionListenerEx();

f.setSize(500,300);

f.setVisible(true);

}

public void actionPerformed(ActionEvent e) // ActionListener 에서는 반드시 구현

{

int i;

if(e.getSource() == exitButton)

{

dispose();

System.exit(0);

}

if(e.getSource() == cancelButton)

{

text.setText("cancel");

}

if(e.getSource() == list)

{

i = list.getSelectedIndex();

text.append("list -> " + e.getActionCommand());

text.append(" , Index ->" + i);

}

text.append("\n");

validate();

}

}

void mouseClicked(MouseEvent e)

마우스가 클릭되었을때

void mouseEntered(MouseEvent e)

마우스가 컴포넌트 내로 들어왔을때

void mouseExited(MouseEvent e)

마우스가 컴포넌트 밖으로 나갔을때

void mousePressed(MouseEvent e)

마우스의 버튼이 눌렀을 때.mouseClicked()보다 먼저 발생됨.

void mouseReleased(MouseEvent e)

마우스 버튼을 놨을때

void mouseDragged(MouseEvent e)

마우스를 드래그 할때

void mouseMoved(MouseEvent e)

마우스를 이동했을때

// =====================================================

// MouseEvent Example

// make : pwg

// date : 2003

// note : 프레임이나 객체에서 마우스를 조작하면 이벤트가

// 발생하여 리스트창에 내용이 표시된다.

// =====================================================

import java.awt.*;

import java.awt.event.*;

public class MouseEventEx extends Frame implements MouseListener,MouseMotionListener

{

Button exitButton, testButton,moveButton;

TextArea text;

Panel topPanel;

int bx=0, by=0; // 마우스 좌표.

public MouseEventEx()

{

topPanel = new Panel(null);

topPanel.addMouseMotionListener(this);

topPanel.setBounds(0,30,100,25);

text = new TextArea();

exitButton = new Button("exit");

testButton = new Button("test");

moveButton = new Button("move");

exitButton.setBounds(0,0,30,20);

testButton.setBounds(30,0,30,20);

moveButton.setBounds(60,0,30,20);

// add

topPanel.add(exitButton);

topPanel.add(testButton);

topPanel.add(moveButton);

// Listener

exitButton.addMouseListener(this);

testButton.addMouseListener(this);

moveButton.addMouseListener(this);

topPanel.addMouseMotionListener(this);

add(topPanel,BorderLayout.NORTH);

add(text,BorderLayout.CENTER);

}

// MouseListener Method

public void mouseClicked(MouseEvent e)

{

text.append("mouseClicked...");

text.append("x=" + e.getX());

text.append(", y=" + e.getY());

text.append(", Source=" + e.getSource());

text.append(", Key =" + e.getModifiers());

text.append("\n");

validate();

bx=e.getX();

by=e.getY();

if(e.getSource()==exitButton) System.exit(0);

}

public void mousePressed(MouseEvent e)

{

text.append("mousePressed...\n");

validate();

}

public void mouseEntered(MouseEvent e)

{

text.append("mouseEntered...\n");

validate();

}

public void mouseExited(MouseEvent e)

{

text.append("mouseExited...\n");

validate();

}

public void mouseReleased(MouseEvent e)

{

text.append("mouseReleased..." + e.getSource() + "\n");

validate();

}

public void mouseDragged(MouseEvent e)

{

text.append("mouse Dragged ...\n");

validate();

}

public void mouseMoved(MouseEvent e)

{

bx=e.getX();

by=e.getY();

text.append("mouse Moved ..." + bx + " , " + by + "\n");

validate();

}

public static void main(String[] args)

{

MouseEventEx f=new MouseEventEx();

f.setSize(600,300);

f.setVisible(true);

}

}

void adjustmentValueChange(AdjustmentEvent e)

AdjustmentEvent가 발생되면 call되는 필수 메소드

int e.getValue()

객체의 현재 값을 리턴

// ==============================================================

// AdjustmentListener Example

// make : pwg

// date : 2003

// --------------------------------------------------------------

// note : 스크롤바를 드래그하여 패널의 색상을 바꾼다.

// ==============================================================

import java.awt.*;

import java.awt.event.*;

public class AdjustmentListenerEx extends Frame implements ActionListener, AdjustmentListener

{

Panel pCenter, pEast;

Scrollbar rScrollbar, gScrollbar, bScrollbar;

Button exitButton;

int r=100,g=100,b=100;

public AdjustmentListenerEx()

{

// panel

pCenter = new Panel();

pEast = new Panel(new GridLayout(0,3));

// component

rScrollbar = new Scrollbar(Scrollbar.VERTICAL, 100,50,0,305);

gScrollbar = new Scrollbar(Scrollbar.VERTICAL, 100,50,0,305);

bScrollbar = new Scrollbar(Scrollbar.VERTICAL, 100,50,0,305);

rScrollbar.setBackground(new Color(255,0,0));

gScrollbar.setBackground(new Color(0,255,0));

bScrollbar.setBackground(new Color(0,0,255));

exitButton = new Button("exit");

// Listener

exitButton.addActionListener(this);

rScrollbar.addAdjustmentListener(this);

gScrollbar.addAdjustmentListener(this);

bScrollbar.addAdjustmentListener(this);

pCenter.setBackground(new Color(r,g,b));

pEast.add(rScrollbar);

pEast.add(gScrollbar);

pEast.add(bScrollbar);

add(pCenter, BorderLayout.CENTER);

add(pEast,BorderLayout.EAST);

add(exitButton, BorderLayout.NORTH);

}

// Listener Method

public void actionPerformed(ActionEvent e)

{

dispose();

System.exit(0);

}

public void adjustmentValueChanged(AdjustmentEvent e)

{

if(e.getSource() == rScrollbar) r=e.getValue();

if(e.getSource() == gScrollbar) g=e.getValue();

if(e.getSource() == bScrollbar) b=e.getValue();

pCenter.setBackground(new Color(r,g,b));

validate();

}

public static void main(String[] args)

{

AdjustmentListenerEx f= new AdjustmentListenerEx();

f.setSize(300,300);

f.setVisible(true);

}

}

void keyPressde(KeyEvent e)

키가 눌려지면 발생.

void keyReleased(KeyEvent e)

눌려진 키가 띄어지면 발생.

void KeyTyped(KeyEvent e)

타자되면 발생.

char getKeyChar()

입력된 문자

int getKeyCode()

입려된 문자의 상수값.(상수값은 내정되어 있음)

VK_ENTER

VK_UP

VK_ALT

VK_DOWN

VK_CONTROL

VK_LEFT

VK_SHIFT

VK_RIGHT

// ==============================================

// KeyListener Example

// make : pwg

// date : 2003

// ----------------------------------------------

// note : 키가 눌려지면 해당 키의 내용이

// 리스트창에 표시된다.

// ==============================================

import java.awt.*;

import java.awt.event.*;

public class KeyListenerEx extends Frame implements ActionListener, KeyListener

{

Panel topPanel;

Button exitButton;

TextArea textArea;

TextField textField;

public KeyListenerEx()

{

Panel topPanel = new Panel();

exitButton = new Button("Exit");

textArea = new TextArea(10,30);

textField = new TextField(20);

// add_on Panel

topPanel.add(textField);

topPanel.add(exitButton);

add(textArea,BorderLayout.CENTER);

add(topPanel,BorderLayout.NORTH);

// add Listener

textField.addKeyListener(this);

exitButton.addActionListener(this);

}

public void actionPerformed(ActionEvent e)

{

System.exit(0);

}

public void keyTyped(KeyEvent e)

{

textArea.append("" + e.getKeyChar() + "\n");

}

public void keyPressed(KeyEvent e)

{

if(e.getKeyCode() == KeyEvent.VK_ENTER)

{

textArea.append(textField.getText() + "\n");

textField.setText("");

}

if(e.getKeyCode() == KeyEvent.VK_ALT)

{

textArea.append(" alt key in \n");

}

if(e.getKeyCode() == KeyEvent.VK_CONTROL)

{

textArea.append(" control key in \n");

}

}

public void keyReleased(KeyEvent e)

{

}

public static void main(String[] args)

{

KeyListenerEx f= new KeyListenerEx();

f.setSize(500,300);

f.setVisible(true);

}

}

void windowOpend(WindowEvent e)

창이 열렸을때

void windowClosing(WindowEvent e)

창이 닫히고 있을때

void windowClosed(WindowEvent e)

창이 닫혔을때

void windowActivated(WidnowEvent e)

활성화 되었을때

void windowDeactivated(WindowEvent e)

비활성화 되었을때

void windowIconified(WidnowEvent e)

최소화 되었을때

void windowDeiconified(WindowEvent e)

창이 다시 복귀되었을때

// ============================================

// WindowListener Example

// make : pwg

// date : 2003

// --------------------------------------------

// note :

// ============================================

import java.awt.*;

import java.awt.event.*;

public class WindowListenerEx extends Frame implements WindowListener, ActionListener

{

Button exitButton;

public WindowListenerEx()

{

exitButton = new Button("exit");

add(exitButton);

exitButton.addActionListener(this);

addWindowListener(this);

}

public void actionPerformed(ActionEvent e)

{

System.exit(0);

}

// WindowListener Method

public void windowActivated(WindowEvent e)

{

System.out.println("Window Active");

}

public void windowClosed(WindowEvent e)

{

System.out.println("Window Closed");

}

public void windowClosing(WindowEvent e)

{

System.out.println("Window Closing");

dispose();

System.exit(0);

}

public void windowDeactivated(WindowEvent e)

{

System.out.println("Window Deactive");

}

public void windowIconified(WindowEvent e)

{

System.out.println("Window Icon");

}

public void windowDeiconified(WindowEvent e)

{

System.out.println("Window Deicon");

}

public void windowOpened(WindowEvent e)

{

System.out.println("Window Open");

}

public static void main(String[] args)

{

WindowListenerEx f= new WindowListenerEx();

f.setSize(300,300);

f.setVisible(true);

}

}

// ===============================================
// WindowAdapter Example
// make : pwg
// date : 2003
// note :
// ===============================================
import java.awt.*;
import java.awt.event.*;

public class WindowAdapterEx extends Frame
{
Button b;
public WindowAdapterEx()
{
addWindowListener(new myWinAdapter());
b=new Button("exit");
b.addMouseListener(new myMouseAdapter());
add(b);
}

public static void main(String[] args)
{
WindowAdapterEx f= new WindowAdapterEx();
f.setSize(300,300);
f.setVisible(true);
}

// 내부 클래스
class myWinAdapter extends WindowAdapter
{
public void windowClosing(WindowEvent e)
{
String str=b.getLabel();
System.out.println("window closed event...");
System.out.println(str + "버튼도 있는데...");
System.exit(0);
}
}

class myMouseAdapter extends MouseAdapter
{
public void mouseClicked(MouseEvent e)
{
System.out.println("windowClosing 도 있는데...");
System.exit(0);
}
};
}