CCITcoder
Contents
Introduction to Java
DataType and Operation
Conditional statements
Iterative statements
Functions
OOPs
- OOPs
- Object
- Access Specifiers
- Methods Returning Value
- Nesting of methods
- method Overloading
- Constructor
- Constructor Overloading
- Immutablemmutable Objects
String
Static Data members
Inherintance
- Inherintance
- Method Overriding
- calling base method
- Constructors and Inheritance
- Types of Inheritance
- Single Inhertance
- Multi-level Inheritance
- Hierarchical Inheritance
Polymorphisam
Applets
AWT
- AWT
- Class Frame
- Class Button
- Event Delegation Modal
- Class TextField
- Class TextArea
- Class Label
- Class Component
- Class Container
- Class Checkbox
- Class List
- Class Choice
- Class FlowLayout
- Class BorderLayout
- Class GridLayout
- Class CardLayout
- Class Panel
- Class Font
- Menus
- Mouse Events
- Window Events
MultiThreading
I/o
Exception Handling
Collection FrameWork
Contents
Introduction to Java
DataType and Operation
Conditional statements
Iterative statements
Functions
OOPs
- OOPs
- Object
- Access Specifiers
- Methods Returning Value
- Nesting of methods
- method Overloading
- Constructor
- Constructor Overloading
- Immutablemmutable Objects
String
Static Data members
Inherintance
- Inherintance
- Method Overriding
- calling base method
- Constructors and Inheritance
- Types of Inheritance
- Single Inhertance
- Multi-level Inheritance
- Hierarchical Inheritance
Polymorphisam
Applets
AWT
- AWT
- Class Frame
- Class Button
- Event Delegation Modal
- Class TextField
- Class TextArea
- Class Label
- Class Component
- Class Container
- Class Checkbox
- Class List
- Class Choice
- Class FlowLayout
- Class BorderLayout
- Class GridLayout
- Class CardLayout
- Class Panel
- Class Font
- Menus
- Mouse Events
- Window Events
MultiThreading
I/o
Exception Handling
Collection FrameWork
AWT-Abstract Window Toolkit
MouseEvents
- If a Listener object is interested in Mouse Events of a Component then such Listener can be can be registered with component by calling methods of Component.
- void addMouseListener(MouseListener l)
- If listener is interested in regular mouse events.
- void addMouseMotionListener(MouseMotionListener l)
- If listener is interested in mouse movements.
Interface MouseListener
- This interface must be implemented by listener who is interested in mouse events.
- public abstract void mouseClicked ( MouseEvent e );
- public abstract void mouseEntered ( MouseEvent e );
- public abstract void mouseExited ( MouseEvent e );
- public abstract void mousePressed ( MouseEvent e );
- public abstract void mouseReleased ( MouseEvent e );
Interface MouseMotionListener
- This listener is notified whenever you move or drag mouse.
- public abstract void mouseDragged(MouseEvent e);
- public abstract void mouseMoved(MouseEvent e);
#Design a Frame to High Light Label when mouse is entered on Label.
import java.awt.*;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
class MyFrame extends Frame implements MouseListener
{
Label lbl;
public MyFrame()
{
lbl=new Label("CCIT");
add(lbl);
lbl.addMouseListener(this);
Font fnt=new Font("TimesRoman",Font.BOLD,50);
lbl.setFont(fnt);
}
public void mouseClicked (MouseEvent e){}
public void mousePressed (MouseEvent e){}
public void mouseReleased (MouseEvent e){}
public void mouseEntered (MouseEvent e)
{
lbl.setForeground(Color.red);
}
public void mouseExited (MouseEvent e)
{
lbl.setForeground(Color.black);
}
}
class demo
{
public static void main(String argvs[])
{
MyFrame frm=new MyFrame();
frm.setSize(400,300);
frm.setVisible(true);
}
}
Class MouseEvent
- This type of Object contains different type of information about MouseEvent.
- int getX()
- int getY()
- Point getPoint()
- Returns the x, y position of the mouse pointer.
- int getButton()
- Returns which, if any, of the mouse buttons has changed state.
- Value can be
- static int BUTTON1
- static int BUTTON2
- static int BUTTON3
#Design an Applet to show mouse co-ordinates in status bar on mouse movements.
import java.applet.Applet;
import java.awt.event.*;
public class MyApplet extends Applet
implements MouseMotionListener
{
public void init()
{
this.addMouseMotionListener(this);
}
public void mouseMoved (MouseEvent e)
{
int x=e.getX();
int y=e.getY();
showStatus("X="+x+" Y="+y);
}
public void mouseDragged (MouseEvent e){}
}
//<applet code=MyApplet width=250 height=150 > < /applet>
#Design a Sketch Pad Frame.
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
class MyFrame extends Frame
implements MouseMotionListener,MouseListener
{
int x1,y1;
public MyFrame()
{
this.addMouseMotionListener(this);
this.addMouseListener(this);
}
public void mouseClicked (MouseEvent e){}
public void mouseEntered (MouseEvent e){}
public void mouseExited (MouseEvent e){}
public void mousePressed (MouseEvent e)
{
x1=e.getX();
y1=e.getY();
}
public void mouseReleased (MouseEvent e){}
public void mouseMoved (MouseEvent e){}
public void mouseDragged (MouseEvent e)
{
Graphics g=this.getGraphics();
g.drawLine(x1,y1,e.getX(),e.getY());
x1=e.getX();
y1=e.getY();
}
}
class demo
{
public static void main(String args[])
{
MyFrame frm=new MyFrame();
frm.setSize(400,300);
frm.setVisible(true);
}
}
