5th sem java

Year 2017 Group B 2.Write a program to display records from the table “employee” that contains (id, name, post and salary) inside the database “testdb”.

import java.sql.*;
public class Ques2_2017 {
public static void main(String[] args) {
String url = "jdbc:mysql://localhost:3306/testdb";
String uname = "root";
String pwd = "";
try {
Class.forName("com.mysql.jdbc.Driver");
Connection con = DriverManager.getConnection(url, uname, pwd);
String sql = "select * from employee";
Statement st = con.createStatement();
ResultSet rs = st.executeQuery(sql);
while(rs.next()) {
        System.out.println(rs.getString("id"));
        System.out.println(rs.getString("name"));
        System.out.println(rs.getString("post"));
       System.out.println(rs.getString("salary"));
}
}catch(Exception ex) {
  System.out.println(ex);
     }
   }
 }

import java.sql.*;

public class Ques2_2017 {

public static void main(String[] args) {

String url = "jdbc:mysql://localhost:3306/testdb";

String uname = "root";

String pwd = "";

try {

Class.forName("com.mysql.jdbc.Driver");

Connection con = DriverManager.getConnection(url, uname, pwd);

String sql = "select * from employee";

Statement st = con.createStatement();

ResultSet rs = st.executeQuery(sql);

while(rs.next()) {

System.out.println(rs.getString("id"));

System.out.println(rs.getString("name"));

System.out.println(rs.getString("post"));

System.out.println(rs.getString("salary"));

}

}catch(Exception ex) {

System.out.println(ex);

}

Q.no 3 Create jsp page to display all odd numbers from 10 to 50

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
  <title>Printing odd numbers from 10 to 50</title>
</head>
<body>
<% out.print("<b> odd numbers from 10 to 50</><br>");
for( int i=10;i<=50;i++) {
  if(i%2!==0){
        out.print("<br><b>"+i+"</b>");
   }
 }
%>
</body>
</html>

<%@page contentType="text/html" pageEncoding="UTF-8"%>

<!DOCTYPE html>

<html>

<head>

<title>Printing odd numbers from 10 to 50</title>

</head>

<body>

<% out.print(" odd numbers from 10 to 50</> ");

for( int i=10;i<=50;i++) {

if(i%2!==0){

out.print(" "+i+"");

}

</body>

</html>

Q.no 5 Write a servlet to find the reverse of a string.

import java.applet.*;
import java.awt.event.*;
import java.awt.*;
public class T2017_5 extends Applet implements ActionListener{
Panel p1,p2;
Label l1,l2,l3;
TextField t1,t2,t3;
Button b1,b2;
public void init(){
p1=new Panel();
p2=new Panel();
p1.setLayout(new GridLayout(3,2));
p2.setLayout(new FlowLayout());
l1=new Label("Number 1");
l2=new Label("Number 2");
l3=new Label("Result");
t1=new TextField();
t2=new TextField();
t3=new TextField();
t3.setEditable(false);
p1.add(l1); p1.add(t1);
p1.add(l2); p1.add(t2);
p1.add(l3); p1.add(t3);
add(p1); add(p2);
b1=new Button("+");
b2=new Button("-");
p2.add(b1); p2.add(b2);
}
public void start(){
b1.addActionListener(this);
b2.addActionListener(this);
}
public void actionPerformed(ActionEvent e){
int a=Integer.parseInt(t1.getText());
int b=Integer.parseInt(t2.getText());
if(e.getSource()==b1){
int c=a+b;
t3.setText(" "+c);
}
else if(e.getSource()==b2){
int c=a-b;
t3.setText(" "+c);
  }
 }
 }

import java.applet.*;

import java.awt.event.*;

import java.awt.*;

public class T2017_5 extends Applet implements ActionListener{

Panel p1,p2;

Label l1,l2,l3;

TextField t1,t2,t3;

Button b1,b2;

public void init(){

p1=new Panel();

p2=new Panel();

p1.setLayout(new GridLayout(3,2));

p2.setLayout(new FlowLayout());

l1=new Label("Number 1");

l2=new Label("Number 2");

l3=new Label("Result");

t1=new TextField();

t2=new TextField();

t3=new TextField();

t3.setEditable(false);

p1.add(l1); p1.add(t1);

p1.add(l2); p1.add(t2);

p1.add(l3); p1.add(t3);

add(p1); add(p2);

b1=new Button("+");

b2=new Button("-");

p2.add(b1); p2.add(b2);

}

public void start(){

b1.addActionListener(this);

b2.addActionListener(this);

}

public void actionPerformed(ActionEvent e){

int a=Integer.parseInt(t1.getText());

int b=Integer.parseInt(t2.getText());

if(e.getSource()==b1){

int c=a+b;

t3.setText(" "+c);

}

else if(e.getSource()==b2){

int c=a-b;

t3.setText(" "+c);

}

Group […]

Year 2016 Group B Q.no 2 Write a swing program to add two numbers given as input by user.

import java.awt.*;
import javax.swing.*;
import javax.swing.event.*;
import java.awt.event.*;
public class T2016_2 extends JFrame implements ActionListener{
JTextField t1,t2;
JLabel sum;
JButton b;
public T2016_2(){
t1=new JTextField();
t2=new JTextField();
sum=new JLabel("");
b=new JButton("Add");
setLayout(new GridLayout(4,1));
add(t1); add(t2); add(b); add(sum);
setSize(200,400);
setVisible(true);
b.addActionListener(this);
}
public void actionPerformed(ActionEvent e){
int n1=Integer.parseInt(t1.getText());
int n2=Integer.parseInt(t2.getText());
int s=n1+n2;
sum.setText("Sum is: "+s);
}
public static void main(String[] args) {
new T2016_2();
}
}

import java.awt.*;

import javax.swing.*;

import javax.swing.event.*;

import java.awt.event.*;

public class T2016_2 extends JFrame implements ActionListener{

JTextField t1,t2;

JLabel sum;

JButton b;

public T2016_2(){

t1=new JTextField();

t2=new JTextField();

sum=new JLabel("");

b=new JButton("Add");

setLayout(new GridLayout(4,1));

add(t1); add(t2); add(b); add(sum);

setSize(200,400);

setVisible(true);

b.addActionListener(this);

}

public void actionPerformed(ActionEvent e){

int n1=Integer.parseInt(t1.getText());

int n2=Integer.parseInt(t2.getText());

int s=n1+n2;

sum.setText("Sum is: "+s);

}

public static void main(String[] args) {

new T2016_2();

}

Q.no 3 Write an applet to check whether given word by user is of length 5 or not.

import java.applet.*;
import java.awt.*;
import java.awt.event.*;
public class T2016_3 extends Applet implements KeyListener{
TextField t1;
Label lab;
public void init(){
t1=new TextField();
add(t1);
lab=new Label();
add(lab);
setSize(300,300);
setLayout(new GridLayout(2,1));
}
public void start(){
t1.addKeyListener(this);
}
public void keyTyped(KeyEvent e){}
public void keyPressed(KeyEvent e){}
public void keyReleased(KeyEvent e){
String a=t1.getText();
if(a.length()==5){
lab.setText(a+" is of length 5");
}
else{
lab.setText(a+" is not of length 5");
  }
 }
}

import java.applet.*;

import java.awt.*;

import java.awt.event.*;

public class T2016_3 extends Applet implements KeyListener{

TextField t1;

Label lab;

public void init(){

t1=new TextField();

add(t1);

lab=new Label();

add(lab);

setSize(300,300);

setLayout(new GridLayout(2,1));

}

public void start(){

t1.addKeyListener(this);

}

public void keyTyped(KeyEvent e){}

public void keyPressed(KeyEvent e){}

public void keyReleased(KeyEvent e){

String a=t1.getText();

if(a.length()==5){

lab.setText(a+" is of length 5");

}

else{

lab.setText(a+" is not of length 5");

}

4. Write a JSP program to display ” Apache Tomcat” eight times.

<html>
<head>
</head>
<body>
<%
  for(int i = 1; i <= 8; i++) {
 out.println("Apache Tomcat <br />");
}
%>
</body>
</html>

<html>

<head>

</head>

<body>

for(int i = 1; i <= 8; i++) {

out.println("Apache Tomcat ");

}

</body>

</html>

5. Write a program […]

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