Slip 8

 Q1) Create a class Sphere, to calculate the volume and surface area of sphere. (Hint : Surface area=4*3.14(r*r), Volume=(4/3)3.14(r*r*r))

import java.util.*;

public class sphere_Slip8_1

{  

        public static void main(String args[])  

    {  

    int radius;  

    //double pie=3.14285714286;  

Scanner s=new Scanner(System.in);

System.out.println("Enter the Radious");

radius=s.nextInt();

double area=4*(Math.PI)*radius*radius;

  System.out.println("Area of the sphere="+area);

    double volume=(4.0/3.0)*Math.PI*(radius*radius*radius);  

    System.out.println("Volume of the sphere="+volume);  

     }  

}  

Q2) Design a screen to handle the Mouse Events such as MOUSE_MOVED and MOUSE_CLICKED and display the position of the Mouse_Click in a TextField.

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

 

public class Slip8_2 implements MouseListener,MouseMotionListener

{

JTextField t1;

String msg="";

    Slip8_2()

    {

 

        // Create and set up the window.

        JFrame frame = new JFrame("MouseListenerExample");

 

        // Display the window.

        frame.setLayout(new FlowLayout());

t1=new JTextField (30);

frame.addMouseListener(this);

frame.addMouseMotionListener(this);

frame.add(t1);

frame.setSize(500,300);

        frame.setVisible(true);

        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    }

public void mouseClicked(MouseEvent me) 

{

msg = "Mouse clicked at X = "+me.getX()+" Y = "+me.getY();

t1.setText(msg);

}

public void mouseEntered(MouseEvent me) {}

public void mouseExited(MouseEvent me) {}


// Handle button pressed.

public void mousePressed(MouseEvent me) {}


// Handle button released.

public void mouseReleased(MouseEvent me) {}

// Handle mouse dragged.

public void mouseDragged(MouseEvent me) {}

// Handle mouse moved.

public void mouseMoved(MouseEvent me)

 {

msg = "Mouse Moved at X = "+me.getX()+" Y = "+me.getY();

t1.setText(msg);

}

    public static void main(String[] args)

{

  new Slip8_2 ();

     }

}

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