Ad java prac sol set

Advance Java (Sem 5 – T.Y.B.Sc.I.T.)
Iram Ramrajkar

PRACTICAL 01:

Write a java program to present a set of choices for a user to select
Stationary products and display the price of Product after Selection from the
list.

Prac1.java:

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

class MyFrame extends JFrame implements ListSelectionListener
{
Container cp;
JList l1;
JLabel lbl;

//creating a 1D array to store the items
String[] items ={"pen","pencil","ruler","eraser","sharpner"};

//creating another 1D array to store their prices.
int[] price={12,13,15,5,5,25,35};

MyFrame()
{
//call parent constructor
super();

//decide size of the frame
setSize(400,400);

//obtain the content pane to add components
cp=this.getContentPane();

//decide layout
cp.setLayout(new FlowLayout());

//instantiate components
l1=new JList(items);
lbl=new JLabel(" ");

//register list to respond to events

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l1.addListSelectionListener(this);

//add components to container
cp.add(l1);
cp.add(lbl);
}

public void valueChanged(ListSelectionEvent e)
{
//check if user selected an item or not
if (l1.getSelectedIndex() == -1)
{ lbl.setText("no items selected"); }
else
{
int indx = l1.getSelectedIndex();
lbl.setText("price: "+price[indx]);
}
}
}

class Prac1
{
public static void main(String args[])
{
MyFrame mf = new MyFrame();
mf.setVisible(true);
}
}

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PRACTICAL 02:

Write a java program to demonstrate typical Editable Table, describing
employee details for a software company.

Prac2.java:

import java.awt.*;

class MyFrame extends JFrame
{
JTable jt;
JScrollPane jsp;

//create 2D array to store the table data
Object[][] data = {
{"Shledon", "Cooper", "System Associate", new Integer(5)},
{"Leonard", "Hofstadter", "System Tester", new Integer(3)},
{"Kunal", "Kotherppalli", "Web Designer", new Integer(2)},
{"Penny", "Cuoco", "System Associate", new Integer(20)},
{"Joey", "Tribiani", "Network Admin", new Integer(10)}
};

//create a 1D array to store table headers
String[] title = {"First Name", "Last Name","Position","Experience"};

public MyFrame()
{
super();

//decide size of frame
setSize( 300, 300 );

//obtain the content pane to add the components.
Container cp = this.getContentPane();

//decide layout
cp.setLayout( new FlowLayout() );


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jt = new JTable(data, title);

//add table to a scroll pane so that table headers can be visible
jsp = new JScrollPane(jt);

add scroll pane to container
cp.add(jsp);
}
}

class Prac2
{
{
}
}

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PRACTICAL 03:

Write a java program using Split pane to demonstrate a screen divided in two
parts, one part contains the names of Planets and another Displays the image
of planet. When user selects the planet name form Left screen, appropriate
image of planet displayed in right screen.

Prac3.java:

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

class MyFrame extends JFrame implements ListSelectionListener
{
JList lst;
JLabel lbl;

//create 1D array to store planet names
String planets[] =
{"mercury","venus","earth","mars","jupiter","saturn","uranus","neptune","pluto"};

public MyFrame()
{
super();

//decide size of frame
setSize(150, 150);

lst = new JList(planets);
lbl = new JLabel(" ");

//create the split pane
JSplitPane splitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, true,
lst, lbl);

//add split pane to frame
cp.add(splitPane);

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//register list to respond to events.
lst.addListSelectionListener(this);
}

public void valueChanged(ListSelectionEvent e)
{
//check if the user has selected an item or not:
if (e.getSelectedIndex() == -1)
{
lbl.setText("Please select a planet..");
}
else
{
//obtain the selected item:
String str = lst.getSelectedValue().toString();

//set the image for the label:
lbl.setIcon(new ImageIcon(str+".jpg"));
}
}
}

class Prac3
{
{
}
}

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PRACTICAL 04:

Develop Simple Servlet Question Answer Application.

index.html:

<html>
<body>
<form action="processAnswer" method="post">
Q.1. What is 2+2? <br/>
<input type="radio" name="q1" value="1"/>1 <br/>
<input type="radio" name="q1" value="4"/>4 <br/> <br/>

Q.2. Which of the following is not a vowel? <br/>
<input type="radio" name="q2" value="a"/>a <br/>
<input type="radio" name="q2" value="e"/>e <br/>
<input type="radio" name="q2" value="i"/>i <br/>
<input type="radio" name="q2" value="c"/>c <br/> <br/>

Q.3. Which of the following is a fruit?
<input type="radio" name="q3" value="potatoe"/>potatoe <br/>
<input type="radio" name="q3" value="onion"/>onion <br/>
<input type="radio" name="q3" value="tomatoe"/>tomatoe <br/>
<input type="radio" name="q3" value="pepper"/>pepper <br/> <br/>

<input type="submit" value="check"/>
</form>
</body>
</html>

processAnswer.java:

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;

public class processAnswer extends HttpServlet
{
public void doPost(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException
{

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int correct =0, incorrect=0;

//obtain the values sent by the user
String a1=req.getParameter("q1");

//decide the type of response
res.setContentType("text/html");

//obtain a print writer object to print o/p to user
PrintWriter pw = res.getWriter();

//check if user’s selection matches correct ans accdngly change counter val
if(a1.equals("4")) {correct ++;}
else{incorrect++;}

if(a2.equals("c")) {correct ++;}
else{incorrect++;}

if(a3.equals("tomatoe")) {correct ++;}
else{incorrect++;}

//display the result to user
pw.println("Correct: " + correct + " Incorrect: "+incorrect);

//close the print write
pw.close();
}
}

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Advance Java

PRACTICAL 05:

Develop Servlet Application of Basic Calculator (+,-,*, /, %).

index.html:

<html>
<body>
<form action="calculate" method="post">
Number: <input type="text" name="t1"/> <br/>

<select name="op">
<option value="+">+</option>
<option value="-">-</option>
<option value="/">/</option>
<option value="*">*</option>
<option value="%">%</option>
</select> <br/>

Number: <input type="text" name="t2"/> <br/>

<input type="submit" value="calculate"/>
</form>
</body>
</html>

calculate.java:

import java.io.*;

public class calculate extends HttpServlet
{
public void doPost(HttpServletRequest req, HttpServletResponse res)
{
//obtain values from user’s html page
int num1 = Integer.parseInt(req.getParameter("t1"));
int num2 = Integer.parseInt(req.getParameter("t2"));
String op = req.getParameter("op");

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//set the kknid of data to be sent
res.setContentType("text/html");

//obtain print writer object to print o/p to user
PrintWriter pw = res.getWriter();

//check the operation selected and perform the task
if(op.equals("+")) { pw.println((num1+num2));}

else if(op.equals("-")) { pw.println((num1-num2));}

else if(op.equals("/")) { pw.println((num1/num2));}

else if(op.equals("*")) { pw.println((num1*num2));}

else { pw.println((num1%num2));}

//close the print writer
pw.close();
}
}

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Advance Java

PRACTICAL 06:

Develop a JSP Application to accept Registration Details form user and Store
it into the database table.

index.html:

<html>
<body>
<form action="Register.jsp" method="post">
User-Id: <input type="text" name="t1"/> <br/>
Password: <input type="password" name="t2"/> <br/>
First Name: <input type="text" name="t3"/> <br/>
Last Name: <input type="text" name="t4"/> <br/>
Email: <input type="text" name="t5"/> <br/>
<input type="submit" value="register"/>
</form>
</body>
</html>

Register.jsp:

//import JDBC API package using page directive
<%@page import="java.sql.*"%>

//code logic in scritplet
<%
//obtain values entered by user
String user_id=request.getParameter("t1");
String password=request.getParameter("t2");
String first_name=request.getParameter("t3");
String last_name=request.getParameter("t4");
String email=request.getParameter("t5");

try
{
//load driver
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");

//establish connection
Connection con=DriverManager.getConnection("jdbc:odbc:myDsn");

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//create statement
PreparedStatement ps = con.prepareStatement("insert into reg values
(?,?,?,?,?)");

//sert the values in the question mark
ps.setString(1, user_id);
ps.setString(2, password);
ps.setString(3, first_name);
ps.setString(4, last_name);
ps.setString(5, email);

//execute query
ps.executeUpdate();

//diaply o/p to user
out.println("Registration done!");
}
catch(Exception e) {out.println("Error: "+e);}
%>

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Advance Java

PRACTICAL 07:

Develop a JSP Application to Authenticate User Login as per the registration
details. If login success the forward user to Index Page otherwise show login
failure Message.

index.html:

<html>
<body>
<form action="authenticate.jsp" method="post">
User-Id: <input type="text" name="t1"/> <br/>
Password: <input type="password" name="t2"/> <br/>
<input type="submit" value="login"/>
</form>
</body>
</html>

authenticate.jsp

//import JDBC API using page directive
<%@page import="java.sql.*"%>

//code logic in scriptlet
<%

//obtain values entered by user
String user_id=request.getParameter("t1");
String password=request.getParameter("t2");

try
{
//load driver

//establish connection

//create statement
PreparedStatement ps = con.prepareStatement("select * from reg where
user_id=? and password=?");

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//set values for question marks
ps.setString(1, user_id);
ps.setString(2, password);

//execute query
ResultSet rs=ps.executeQuery();

//check if user and pwd are correct and accdngly perform task
if (rs.next()) {response.sendRedirect("welcome.html");}
else {out.println("could not login!");}
}
catch(Exception e) {out.println("Error: "+e);}
%>

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Advance Java

PRACTICAL 08:

Develop a web application to add items in the inventory using JSF.

index.xhtml:

<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core">

<h:body>
<h:form>
Item Name: <h:inputText id="t1" value="#{inventory.item}"/> <br/>

Item Price: <h:inputText id="t2" value="#{inventory.price}">
<f:convertNumber type="number"/>
</h:inputText> <br/>

Item Quantity: <h:inputText id="t2" value="#{inventory.qty}">
<f:convertNumber type="number"/>
</h:inputText>

<h:commandButton id="btn" value="Add Item"
action="#{inventory.addItem()}"/>
</h:form>
</h:body>
</html>

Inventory.java:

import javax.faces.bean.*;
import java.sql.*;

@ManagedBean
@SessionScoped
public class Inventory
{
String item;
int price, qty;

public String getItem() { return item; }

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public void setItem(String item) { this.item = item; }

public int getPrice() { return price; }

public void setPrice(int price) { this.price = price; }

public int getQty() { return qty; }

public void setQty(int qty) { this.qty = qty; }

public String addItem()
{
try
{

PreparedStatement ps = con.prepareStatement("insert into inven values
(?,?,?)");
ps.setString(1, item);
ps.setInt(2, price);
ps.setInt(3, qty);

ps.executeUpdate();

return "success";
}
catch(Exception e)
{return "fail";}
}
}

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faces-config.xml

<faces-config version="2.0"
xmlns="http://java.sun.com/xml/ns/javaee" >

<navigation-rule>
<from-view-id>index.xhtml</from-view-id>
<navigation-case>
<from-action>#{inventory.addItem()}</from-action>
<from-outcome>success</from-outcome>
<to-view-id>page1.xhtml</to-view-id>
</navigation-case>

<navigation-case>
<from-action>#{inventory.addItem()}</from-action>
<from-outcome>fail</from-outcome>
<to-view-id>page2.xhtml</to-view-id>
</navigation-case>
</navigation-rule>
</faces-config>

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Advance Java

PRACTICAL 09:

Develop a Room Reservation System Application Using Enterprise Java Beans.

ReservationBean.java:

package ejb;
import javax.ejb.Stateless;
import java.sql.*;

@Stateless
public class ReservationBean
{
public boolean canReserve(String name, String startDate, String endDate)
{
try
{
boolean flag=true;


PreparedStatement ps = con.prepareStatement("select * from reservation
where startDate=?");
ps.setDate(1,Date.valueOf(startDate) );

ResultSet rs=ps.executeQuery();

if (rs.next()) {flag=false;}
else
{
PreparedStatement ps1 = con.prepareStatement("insert into reservation values
(?,?,?)");
ps.setString(1,name);
ps.setDate(2,Date.valueOf(startDate) );
ps.setDate(3,Date.valueOf(endDate) );
ps.executeUpdate();
flag=true;
}
return flag;
}
catch(Exception e) {return false;} } }

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myServlet.java:

import ejb.*;
import javax.ejb.*;
import java.io.*;

public class myServlet extends HttpServlet {

@EJB
private ReservationBean myBean;

public void doGet(HttpServletRequest request, HttpServletResponse response)
{
String name = request.getParameter("t1");
String startDate = request.getParameter("t2");
String endDate = request.getParameter("t3");

response.setContentType("text/html");
PrintWriter out = response.getWriter();

boolean ans=myBean.canReserve(name, startDate, endDate);
if(ans==true) {out.println("room has been reserved.");}
else {out.println("room could not be reserved.");}
}
}

index.html:

<html>
<body>
<form action="myServlet" method="get">
Name: <input type="text" name="t1"/> <br/>
Start Date: <input type="text" name="t2"/> <br/>
End Date: <input type="text" name="t3"/> <br/>
<input type="submit" value="reserve room"/>
</form>
</body> </html>

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PRACTICAL 10:

Develop a Hibernate application to store Feedback of Website Visitor in
MySQL Database.

myBean.java:

package myApp;
import java.io.Serializable;

public class myBean implements Serializable{
private String name;
private String message;
private Integer id;

public myBean () {}

public myBean (Integer i,String nm) {name=nm; id=i;}

public void setName(String nm) {name=nm;}

public String getName() {return name;}

public void setMessage(String m) {message=m;}

public String getMessage() {return message;}

public Integer getId(){return id;}

public void setId(Integer i) {id=i;}
}

Feedback.hbm.xml:

<hibernate-mapping>
<class name="myApp.myBean" table="myFeedback" catalog="myDB">
<id name="id" type="java.lang.Integer">
<column name="userNo"/>
<generator class="identity"/>
</id>

<property name="name" type="java.lang.String">
<column name="name" length="25"/>

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</property>

<property name="message" type="java.lang.String">
<column name="message" length="120"/>
</property>
</class>
</hibernate-mapping>

hibernate.cgf.xml:

<hibernate-configuration>
<session-factory>
<property
name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
<property
name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property
name="hibernate.connection.url">jdbc:mysql://localhost:3306/myDB</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.connection.password">1234</property>
<mapping resource="myApp/Feedback.hbm.xml"/>
</session-factory>
</hibernate-configuration>

storeFeedback.jsp:

<%@page import="org.hibernate.*, org.hibernate.cfg.*, myApp.myBean"%>

<%!SessionFactory sf;
Session s; %>
<%
String name=request.getParameter("t1");
String message=request.getParameter("t2");

sf=new Configuration().configure().buildSessionFactory();
s=sf.openSession();

Transaction t=null;
myBean bean=new myBean();

try

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{
t=s.beginTransaction();
bean.setName(name);
bean.setMessage(message);

s.save(bean);
t.commit();
out.println("Added record!");
}

catch(RuntimeException e)
{
if(t != null) t.rollback();
out.println(e);
}
%>

index.html:

<html>
<body>
<form action="storeFeedback.jsp" method="post">
Name: <input type="text" name="t1"/> <br/>
Message: <input type="text" name="t2"/> <br/>
<input type="submit" value="store feedback"/>
</form>
</body>
</html>

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Advance Java

PRACTICAL 11:

Develop a simple Struts Application to Demonstrate 3 page Website of
Teaching Classes which passes values from every page to another

First.java:

package coaching;
import com.opensymphony.xwork2.*;

public class First extends ActionSupport
{
String first_name, last_name, course, college;

public String getCollege() { return college; }

public void setCollege(String c) { college = c; }

public String getCourse() { return course; }

public void setCourse(String c) { course = c; }

public String getFirst_name() { return first_name; }

public void setFirst_name(String f) { first_name = f; }

public String getLast_name() { return last_name; }

public void setLast_name(String l) { last_name = l; }

public String execute()
{ return "secondPage"; }
}

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Second.java:

package coaching;

public class Second extends ActionSupport
{
String first_name, last_name, course, college;

public String getCollege() { return college; }

public void setCollege(String c) { college = c; }

public String getCourse() { return course; }

public void setCourse(String c) { course = c; }

public String getFirst_name() { return first_name; }

public void setFirst_name(String f) { first_name = f; }

public String getLast_name() { return last_name; }

public void setLast_name(String l) { last_name = l; }

{ return "thirdPage"; }
}

struts.xml:

<struts>
<package name="/" extends="struts-default">
<action name="First" class="coaching.First">
<result name="secondPage">/page2.jsp</result>
</action>

<action name="Second" class="coaching.Second">
<result name="thirdPage">/page3.jsp</result>
</action>

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</package>
</struts>

page1.jsp:

<%@taglib prefix="s" uri="/struts-tags" %>
<html>
<body>
<s:form method="get" action="coaching/First.action">
First Name: <s:textfield name="first_name"/> <br/>
Last Name: <s:textfield name="last_name"/>
<s:submit value="click me!"/>
</s:form>
</body>
</html>

page2.jsp:

<html>
<body>
<s:form method="get" action="coaching/Second.action">
<s:hidden name="first_name"/> <br/>
<s:hidden name="last_name"/> <br/>

College: <s:textfield name="college"/> <br/>
Course: <s:textfield name="course"/>
</s:form>
</body>
</html>

page3.jsp:

<html>
<body>
<s:form method="get" action="coaching/First.action">
You entered the following data: <br/>
First Name: <s:property value="first_name"/> <br/>
Last Name: <s:property value="last_name"/> <br/>
College: <s:property value="college"/> <br/>
Course: <s:property value="course"/> <br/>

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</s:form>
</body> </html>
PRACTICAL 12:
Develop a simple Struts Application to Demonstrate E-mail Validator.

Validate.java:

package check;

import java.util.regex.*;

public class Validate extends ActionSupport
{
String email;

public String getEmail() { return name; }

public void setEmail(String e) { email = e; }

{
String pattern ="^[_A-Za-z0-9]+(.[_A-Za-z0-9]+)*@[A-Za-z0-9]+(.[A-Za-
z0-9]+)*";

Pattern p=Pattern.compile(pattern);
Matcher m=p.matcher(email);
boolean flg=m.matches();

if(flag==true) {return "yes";}
else {return "no";}
}
}

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struts.xml:

<struts>
<package name="/" extends="struts-default">
<action name="Validate" class="check.Validate">
<result name="yes">/page1.html</result>
<result name="no">/page2.html</result>
</action>
</package>
</struts>

index.jsp:

<html>
<body>
<s:form method="get" action="check/Validate.action">
Enter your Email ID: <s:textfield name="email"/>
</s:form>
</body>
</html>

page1.html:

<html>
<body>
<p> Emial ID is correct </p>
</body>
</html>

page2.html:

<html>
<body>
<p> Emial ID is not correct </p>
</body>
</html>

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PRACTICAL 13:

Develop a simple “Hello World” Web Service in Java.

HelloUser.java:

package myPack;

import javax.jws.WebService;
import javax.jws.WebMethod;
import javax.jws.WebParam;
import javax.ejb.Stateless;

@WebService( )
@Stateless()
public class HelloUser {

@WebMethod( )
public String sayHello(@WebParam( ) String name) {
return "Hello, "+name+" ..!! Welcome to web services :) ";
}
}

myServlet.java:

import java.io.*;
import javax.xml.ws.*;
import pack.*;

public class myServlet extends HttpServlet {
@WebServiceRef(wsdlLocation = "WEB-
INF/wsdl/localhost_8080/HelloUser/HelloUser.wsdl")
private HelloUser_Service service;

public void doGet(HttpServletRequest request, HttpServletResponse response)
{
String nm = request.getParameter("t1");
response.setContentType("text/html");
PrintWriter pw = response.getWriter();

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String ans=sayHello(nm);
pw.println("<h2>"+ans+"</h2>");
pw.close();
}

private String sayHello(java.lang.String user) {
pack.HelloUser port = service.getHelloUserPort();
return port.sayHello(user);
}

}

index.html:

<html>
<body>
<form action="myServlet" method="get">
Name: <input type="text" name="t1"/>
<input type="submit" value="click me"/>
</form>
</body>
</html>

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PRACTICAL 14:

Develop an application to show searching the Directory using JNDI capabilities

Dir.java:

import javax.naming.*;
import java.util.*;

class Dir
{
pulbic static void main(String a[])
{
String addr="file:ad_java";

Hashtable args = new Hashtable();

args.put(Context.INITIAL_CONTEXT_FACTORY,"test.sun.jndi.fscontext.FSConte
xtFactory");
args.put(Context.PROVIDER_URL,addr);

try
{
Context c = new InitialContext(args);
NamingEnumeration ne = c.listBindings("");

while(ne.hasMore())
{
Binding b = (Binding) ne.next();
System.out.println("File: "+b.getName());
}
c.close();
}
catch(Exception e)
{ System.out.println("Error: "+e);}
}
}

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PRACTICAL 15:

Develop a program to show file access using JNDI capabilities.

import javax.naming.*;
import java.util.*;

class FileAccess
{
pulbic static void main(String a[])
{
String file_nm="abc.txt";

Hashtable args = new Hashtable();

args.put(Context.INITIAL_CONTEXT_FACTORY,"test.sun.jndi.fscontext.FSConte
xtFactory");

try
{
Context ctx=new InitialContext();
Object obj = ctx.lookup(name);
System.out.println("The file is located at: "+obj);
ctx.close();
}
catch(Exception e)
{ System.out.println("Error: "+e);}
}
}

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Ad java prac sol set

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