Diploma Computer/IT

Java Programming Practical 30 Question 1 Write program to retrieve data from table using ResultSet interface. (Use various methods of navigation methods) ResultDemo.java Java import java.sql.*; public class ResultDemo { public static void main(String args[]) { try { Class.forName("com.mysql.jdbc.Driver"); System.out.println("Driver loaded"); Connection con= DriverManager.getConnection("jdbc:mysql://localhost:3306/mydb","root",""); System.out.println("Connection to the database created"); Statement st = con.createStatement(); String query […]

Java Programming Practical 29 Question 1 Develop JDBC program to retrieve data. ResultDemo.java Java import java.sql.*; public class ResultDemo { public static void main(String args[]) { try { Class.forName("com.mysql.jdbc.Driver"); System.out.println("Driver loaded"); Connection con= DriverManager.getConnection("jdbc:mysql://localhost:3306/mydb","root",""); System.out.println("Connection to the database created"); Statement st = con.createStatement(); String query = "select * from student"; ResultSet rs=st.executeQuery(query); System.out.println("Roll NotttNametttBranch"); while(rs.next())

Java Programming Practical 28 Question 1 Write a program for Implementing Insert Statement. InsertDemo.java Java import java.sql.*; public class InsertDemo { public static void main(String[] args) { try { Class.forName("com.mysql.jdbc.Driver"); System.out.println("Driver loaded"); Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/mydb","root",""); System.out.println("Connection created"); Statement stmt = con.createStatement(); String sql = "insert into student values(4343,'PQRS','CO')"; stmt.executeUpdate(sql); System.out.println("Record inserted"); stmt.close(); con.close(); }

Java Programming Practical 27 Question 1 Write a Program to create a Student Table in database and insert a record in a Student table. StudentDemo.java Java import java.sql.*; public class StudentDemo { public static void main(String[] args) { try { Class.forName("com.mysql.jdbc.Driver"); System.out.println("Driver loaded"); Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/mydb","root",""); System.out.println("Connection created"); Statement stmt = con.createStatement(); String sql

Java Programming Practical 26 Question 1 Write a program using DatagramPacket and DatagramSocket to create chat application ChatReceiver.java Java import java.net.*; import java.io.*; import java.util.*; class ChatReceiverThread extends Thread { DatagramSocket ds; DatagramPacket dp; ChatReceiverThread(DatagramSocket s) { ds=s; } public void run() { while(true) { try { byte[] data =new byte[500]; dp=new DatagramPacket(data,500); ds.receive(dp); String

Java Programming Practical 25 Question 1 Write a program to check credentials of users (Client will send user id and password to server and server will authenticate the client using equals()) CheckServer.java Java import java.net.*; import java.io.*; class CheckServer { public static void main(String[ ] args) { try { String message; ServerSocket connectionSocket = new

Java Programming Practical 24 Question 1 Write a program using URL class to retrieve the host, protocol, port and file of URL http://www.msbte.org.in URLDemo.java Java import java.net.*; class URLDemo { public static void main(String args[])throws MalformedURLException { URL netAddress=new URL("http://www.msbte.org.in"); System.out.println("Protocol:"+netAddress.getProtocol()); System.out.println("Port:"+netAddress.getPort()); System.out.println("Host:"+netAddress.getHost()); System.out.println("File:"+netAddress.getFile()); } } import java.net.*; class URLDemo { public static void main(String

Java Programming Practical 23 Question 1 Develop a program using InetAddress class to retrieve IP address of computer when hostname is entered by the user. InetDemo.java Java import java.io.*; import java.net.*; public class InetDemo { public static void main(String args[])throws IOException { String hostname; DataInputStream din=new DataInputStream(System.in); System.out.println("Enter Host Name: "); hostname= din.readLine(); InetAddress ia=InetAddress.getByName(hostname);

Java Programming Practical 22 Question 1 Write a program using JTextField to perform the addition of two numbers AddNumbers.java Java import javax.swing.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; public class AddNumbers extends JFrame implements ActionListener { JTextField jt1,jt2; JLabel jl,jl1,jl2; JButton jb; AddNumbers() { jt1=new JTextField(); jt2=new JTextField(); jl=new JLabel(); jl1=new JLabel("Enter Number 1:"); jl2=new JLabel("Enter Number

Java Programming Practical 21 Question 1 Write Java Program to display following output. GridBagDemo1.java Java import java.awt.*; class GridBagDemo1 extends Frame { Button b1; Label l1,l2; TextField t1; TextArea ta; GridBagDemo1() { GridBagLayout gb = new GridBagLayout(); GridBagConstraints gbc = new GridBagConstraints(); b1=new Button("Submit"); l1=new Label("Name"); l2=new Label("Comments"); t1=new TextField(10); ta=new TextArea(10,30); setLayout(gb); gbc.fill =