Sql server, .net and c# video tutorial: GridView insert update delete in asp.net - Part 23

Sql server, .net and c# video tutorial: GridView insert update delete in asp.net - Part 23

Process-to-Process Delivery: UDP and TCP

Data Deliveries Types

Process-To-Process Delivery

Types

A. TCP : Transmission Control Protocol

B. UDP : User Datagram Protocol

C. SCTP : Stream Control Transmission Protocol

  TCP Working 

 Code

Communicate Between Client & Server Program , when both are running on Same Machine through Transmission Control Protocol

// This code is for Client save it as cli.java

import java.io.IOException;

import java.io.PrintStream;

import java.net.Socket;

import java.net.UnknownHostException;

import java.util.Scanner;

public class cli{

public static void main(String args[]) throws UnknownHostException, IOException

 {

  int number,temp;

 Scanner sc =new Scanner(System.in);

 Socket s =new Socket("127.0.0.1",1344);// for ip address & port number

 Scanner sc1= new Scanner(s.getInputStream());//get input stream

 

  System.out.println("Enter any number");

  number= sc.nextInt();

  PrintStream P= new PrintStream(s.getOutputStream());

  P.println(number);

  temp=sc1.nextInt(); // creating temporary variable in order to accepting result from the server

  System.out.println(temp);

   

 }

}

// This code is for Server save it as ser.java

import java.io.IOException;

import java.io.PrintStream;

import java.net.ServerSocket;

import java.net.Socket;

import java.util.Scanner;

  

public class ser {

 public static void main(String args[]) throws IOException

 {

  int number,temp;

  ServerSocket s1=new ServerSocket(1344);// specified same port number as specified in the client  

  Socket ss=s1.accept(); // for accept incoming request from the client.

  Scanner sc=new Scanner(ss.getInputStream()); // accept some data from the client. 

  number=sc.nextInt();

 

  temp=number*2; // result saving on the operation and pass it.

 

  PrintStream p=new PrintStream(ss.getOutputStream());

  p.println(temp);

 }

}

//*OutputScreen*/

 UDP Working 

Code

Communicate Between Client & Server , when both are running on Same Machine through User DataGram Protocol (UDP)

// this is code for Server

class UDPServer {

  public static void main(String args[]) throws Exception

    {

      DatagramSocket serverSocket = new DatagramSocket(9876);

      byte[] receiveData = new byte[1024];

      byte[] sendData  = new byte[1024];

      while(true)

        {

          System.out.println("SERVER is waiting to receive a string");

          DatagramPacket receivePacket = new DatagramPacket(receiveData, receiveData.length);

          serverSocket.receive(receivePacket);

          String sentence = new String(receivePacket.getData());

          InetAddress IPAddress = receivePacket.getAddress();

          int port = receivePacket.getPort();

          String capitalizedSentence = sentence.toUpperCase();

          sendData = capitalizedSentence.getBytes();

          DatagramPacket sendPacket = new DatagramPacket(sendData, sendData.length, IPAddress, port);

          serverSocket.send(sendPacket);

          System.out.println("SERVER has converted a string from lowercase to uppercase");

        }

      } 

// this is code for Client 

import java.io.*;

import java.net.*;

// this program wil send a string to server & server in return send the same string in capital

class UDPClient {

    public static void main(String args[]) throws Exception

    {

      BufferedReader inFromUser =

        new BufferedReader(new InputStreamReader(System.in));

      DatagramSocket clientSocket = new DatagramSocket();

      InetAddress IPAddress = InetAddress.getByName("localhost");

      byte[] sendData = new byte[1024];

      byte[] receiveData = new byte[1024];

      String sentence = inFromUser.readLine();

      sendData = sentence.getBytes();

DatagramPacket sendPacket = new DatagramPacket(sendData, sendData.length, IPAddress, 9876);

      clientSocket.send(sendPacket);

      DatagramPacket receivePacket = new DatagramPacket(receiveData, receiveData.length);

      clientSocket.receive(receivePacket);

      String modifiedSentence =  new String(receivePacket.getData());

      System.out.println("FROM SERVER:" + modifiedSentence);

      clientSocket.close();

      }

}

//*OutputScreen*/

For More About TCP & UDP

ADT Lab Manual For KUK Syllabus

https://www.scribd.com/document/331444216/ADT-Lab

Java Applet House Design

 /** Applet Using To Design House  /*

package applet;

import java.awt.*;
import java.applet.*;

public class DrawingHouse extends Applet
{
public void init()
{
setSize(500,400);
}
public void paint(Graphics g)
{
   setBackground(Color.red);
    //Drwaw clouds
    g.setColor(Color.WHITE);
    g.fillOval(30, 30, 40, 40);
    g.fillOval(60, 30, 40, 40);
    g.fillOval(80, 30, 40, 40);
    g.fillOval(40, 10, 40, 40);
    g.fillOval(70, 10, 40, 40);
   
    g.fillOval(160, 10, 20, 20);
    g.fillOval(175, 10, 20, 20);
    g.fillOval(190, 10, 20, 20);
    g.fillOval(170, 20, 20, 20);
    g.fillOval(185, 20, 20, 20);
   
   
    //Draw Roof
    g.setColor(Color.red);
    int xs[] = {100,160,220};
    int ys[] = {100,58,100};
   // int[] ys = null;
Polygon poly=new Polygon(xs,ys,3);
    g.fillPolygon(poly);
    //For Body Of The House
    g.setColor(Color.blue);
    g.fillRect(100,100,120,120);
   
    //draw the door
    g.setColor(Color.white);
    g.fillRect(145, 160, 30, 60);
   
    //For Sun
    g.setColor(Color.yellow);
    g.fillOval(240, 30, 50, 50);
   
    //for clouds
    g.setColor(Color.white);
    g.fillOval(260,50,30,30);
    g.fillOval(280, 50, 30, 30);
    g.fillOval(300, 50, 30, 30);
    g.fillOval(270, 40, 30, 30);
    g.fillOval(298, 40, 30, 30);
   
    //draw the door
    g.setColor(Color.white);
    g.fillRect(145, 160, 30, 60);
   
    //for Chimney
    g.setColor(Color.black);
    g.fillRect(128,55,10,30);
   
    //door block & 2 window
    g.setColor(Color.black);
    g.fillRect(145, 160, 30, 60);
    g.setColor(Color.magenta);
    g.fillPolygon(poly);
   
    //For Window
    g.setColor(Color.white);
    g.fillRect(115,125,25,25);
   
   
    //cross bar window
    g.setColor(Color.black);
    g.drawLine(127, 125, 127, 150);
   
    //window2
    g.setColor(Color.white);
    g.fillRect(180, 125, 25, 25);
   
    //window 2 cross bar
    g.setColor(Color.black);
    g.drawLine(192, 125, 192, 150);
   
    //B standard
    //Draw grass
    g.setColor(Color.orange);
    g.fillRect(0,200,300,40);
   
    // draw tree
    g.setColor(Color.gray);
    g.fillRect(28, 100, 20, 100);
    g.setColor(Color.green);
    g.fillOval(0,40,80,80);
   
    // author Label1
    g.setColor(Color.cyan);
    g.drawString("Anuj Kumar Rey ", 280,300);
}
}

OutputScreen

How to write Action Listener for a JButton(Swing JButton Event)

import javax.swing.*;
import java.awt.*;

class MyFrame extends JFrame {
JButton btn=new JButton("click");
Container c;
MyFrame()
{
c=this.getContentPane();
c.setLayout(null);
btn.setBounds(100,50,100,50);
c.add(btn);
}
}
class AcionDemo
{
public static void main(String[] args)
{
MyFrame f=new MyFrame();
f.setTitle("ActionDemo");
f.setVisible(true);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setBounds(100,50,700,500);
}
}

/**OutputScreen*/

/** 
 * simply displays Diffrent Button Color Using ActionListener.
 */

import javax.swing.*;
import java.awt.*; import java.awt.event.*; class MyFrame extends JFrame implements ActionListener { JButton btn1=new JButton("RED"); JButton btn2=new JButton("YELLOW"); JButton btn3=new JButton("GREEN"); JButton btn4=new JButton("BLACK"); JButton btn5=new JButton("BLUE"); JButton btn6=new JButton("GRAY"); Container c; MyFrame() { c=this.getContentPane(); c.setLayout(null); btn1.setBounds(100,50,100,50); btn2.setBounds(200,50,100,50); btn3.setBounds(300,50,100,50); btn4.setBounds(400,50,100,50); btn5.setBounds(500,50,100,50); btn6.setBounds(600,50,100,50); btn1.addActionListener(this); btn2.addActionListener(this); btn3.addActionListener(this); btn4.addActionListener(this); btn5.addActionListener(this); btn6.addActionListener(this); c.add(btn1); c.add(btn2); c.add(btn3); c.add(btn4); c.add(btn5); c.add(btn6); } public void actionPerformed(ActionEvent e) { //c.setBackground(Color.YELLOW); if(e.getSource()==btn1) { c.setBackground(Color.RED); } if(e.getSource()==btn2) { c.setBackground(Color.YELLOW); } if(e.getSource()==btn3) { c.setBackground(Color.GREEN); } if(e.getSource()==btn4) { c.setBackground(Color.BLACK); } if(e.getSource()==btn5) { c.setBackground(Color.blue); } if(e.getSource()==btn6) { c.setBackground(Color.gray); } } } class AcionDemo { public static void main(String[] args) { MyFrame f=new MyFrame(); f.setTitle("ActionDemo"); f.setVisible(true); f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); f.setBounds(100,50,700,500); } }

//*OutputScreen*/

LoginFrame

Step For Creating LoginFrame
To Create Two Class e.g.LoginFrame & Splashscreen
1. For LoginFrame

/* LoginFrame */

import javax.swing.*;

import java.awt.*;

import java.awt.event.*;

public class LoginFrame implements ActionListener {

JFrame frame;

private  JPanel panel1;

private  JPanel panel2;

private  JPanel panel3;

private JButton loginBtn;

private JButton exitBtn;

private JLabel nameLbl;

private JLabel userLbl;

private JLabel passwordLbl;

private  JTextField userTxt;

private  JPasswordField passwordTxt;

 public String loginname;

public String loginpass;

// class Veriables

Dimension screen = Toolkit.getDefaultToolkit().getScreenSize();

public LoginFrame()

{

panel1 = new JPanel();

panel1.setLayout(new FlowLayout());

nameLbl = new JLabel("WELCOME");

panel2 = new JPanel();

panel2.setLayout(new GridLayout(2,2));

userLbl = new JLabel("Username :");

userTxt = new JTextField(20);

passwordLbl = new JLabel("Password :");

passwordTxt = new JPasswordField(20);

panel3 = new JPanel();

panel3.setLayout(new FlowLayout());

loginBtn = new JButton("Login", new ImageIcon(LoginFrame.class.getResource("images/Key.gif")));

loginBtn.addActionListener(this);

exitBtn = new JButton("Exit", new ImageIcon(LoginFrame.class.getResource("images/Keys.gif")));

exitBtn.addActionListener(this);

panel1.add(nameLbl);

panel2.add(userLbl);

panel2.add(userTxt);

panel2.add(passwordLbl);

panel2.add(passwordTxt);

panel3.add(loginBtn);

panel3.add(exitBtn);

frame = new JFrame("Login Frame...");

frame.setSize(300,200);

Container pane = frame.getContentPane();   

pane.setLayout(new GridLayout(3,1));

pane.add(panel1);

pane.add(panel2);

pane.add(panel3);

 frame.setIconImage(new ImageIcon("images/Business.png").getImage());

frame.setResizable(false);

frame.setLocation((screen.width - 500)/2,((screen.height-350)/2));

frame.setVisible(true);

frame.addWindowListener(new WindowAdapter()

{

public void windowClosing(WindowEvent e)

{

System.exit(0);

}

});

            }

public void actionPerformed(ActionEvent event)

{

Object source = event.getSource();

if(source.equals(loginBtn))

{

login();

} 

else if(source.equals(exitBtn))

{

System.exit(0);

}

}

public void login()

{

loginname = userTxt.getText().trim();

loginpass = passwordTxt.getText().trim();

//write sql query

}

public static void main(String[] args)

{

 SplashScreen FormSplash = new SplashScreen();

  Thread ThFormSplash = new Thread(FormSplash);

ThFormSplash.start();

    while(!FormSplash.isShowing())

    {

      try

      {

        //Display the FormSplash for 2 seconds

        Thread.sleep(2000);

      }

      catch(InterruptedException e)

      {

      }

    }

 FormSplash.dispose();

LoginFrame frame1 = new LoginFrame();

// MainMenu menu = new MainMenu(loginname,currentdate);

}

}

 2. For SplashScreen 

   /* SplashScreen */

import javax.swing.*;

import java.awt.*;

import javax.swing.border.LineBorder;

public class SplashScreen extends JWindow implements Runnable

{

public void run()

{

JLabel SplashScreenLabel = new JLabel(new ImageIcon("pharmacy_rx.png"));

Dimension screen = Toolkit.getDefaultToolkit().getScreenSize();

Color cl = new Color (255,200, 120);

SplashScreenLabel.setBorder (new LineBorder (cl, 10));

getContentPane().add(SplashScreenLabel,BorderLayout.CENTER);

setSize(395,310);

setLocation((screen.width-500)/2,(screen.height-500)/2);

show();

}

}

Note

/*To add  two icon e.g.- Login & Exit Button Icon*/

/*Also to add  SplashScreen(Time) Image.*/

OUTPUT SCREEN