Practical File for Advance Java

1. INDEX
Sr. No. Program Remarks
1.
Write a program on Multithreading
2.
Write a program on Input/output Stream
3. Write a program on Interfaces
4. Write a program on Applet
5. Write a program on SWING Application
6. Write a program on JDBC
7. Write a program on Servlets
8.
Write a program on JSP
9.
Write a program on Sending E-Mail
10.
Write a program on Implementing RMI

2. Program No1: Write a program on Multithreading
import java.io.*;
class a implements Runnable
{
Thread t;
a()
{
t=new Thread(this, "thread1");
t.start();
}
public void run(){
try{
System.out.println("Manish");
Thread.sleep(1000);
}
catch(Exception ex){
}
}
}
class thread1{
public static void main(String arg[]){
try{
for(int i=0;i<=5;i++)
{
new a();
Thread.sleep(500);
System.out.println("Jain");
}
}
catch(Exception ex)
{
}
}
}

3. OUTPUT:-

4. Program No2: Write a program on Input/output
Stream
import java.io.*;
class inputoutput{
public static void main(String args[])
throws IOException
{
char c;
BufferedReader br = new BufferedReader(new
InputStreamReader(System.in));
System.out.println("Enter characters, 'q' to quit.");
do
{
c = (char) br.read();
System.out.println(c);
}
while(c != 'q');
}
}

5. OUTPUT:-

6. Program No3: Write a program on Interfaces
import java.io.*;
class student
{
int roll;
void get(int r)
{
roll=r;
}
void disp()
{
System.out.println("Roll no."+roll);
}
}
class test extends student
{
float t1,t2,t3;
void gettest(float a,float b,float c)
{
t1=a;
t2=b;
t3=c;
}
void distest()
{
System.out.println("Test 1:"+t1);
System.out.println("Test 2:"+t2);
System.out.println("Test 3:"+t3);
}
}
class program extends test
{
float p1,p2;
void getprac(float a,float b)
{
p1=a;
p2=b;
}
void disprac()
{

7. System.out.println("Program 1:"+p1);
System.out.println("Program 2:"+p2);
}
}
interface sport
{
float spwt=6.0f;
public void dispwt();
}
class Result extends program implements sport
{
float total;
public void dispwt()
{
System.out.println("Sport weightage:"+spwt);
}
void distotal()
{
total=t1+t2+t3+p1+p2+spwt;
disp();
distest();
disprac();
dispwt();
System.out.println("Total Result:"+total);
}
}
public class Marks
{
public static void main(String args[])
{
Result r=new Result();
r.get(150);
r.gettest(80,85,89);
r.getprac(45,49);
r.distotal();
}
}

8. OUTPUT:-

9. Program No4: Write a program on Applet
import java.applet.*;
import java.awt.*;
/*<applet Code="face.class" Width=600 Height=600>
</applet>*/
public class face extends Applet
{
public void paint(Graphics g)
{
g.drawString("Applet Program",250,50);
g.drawOval(200,100,200,200);
g.fillOval(250,150,30,20);
g.fillOval(320,150,30,20);
g.drawLine(299,150,299,225);
g.drawArc(274,200,50,50,210,120);
}
}

10. OUTPUT:-

11. Program No 5: Write a program on SWING
Application
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Main1 extends JApplet implements ActionListener
{
JRadioButton r1,r2;
String msg="";
JButton b;
JTextField t1,t2;
ButtonGroup bg;
public void init()
{
getContentPane().setLayout(new FlowLayout());
JLabel l1=new JLabel("Enter Name");
t1=new JTextField(10);
t2=new JTextField(25);
t2.setEditable(false);
b=new JButton("Display");
r1=new JRadioButton("Male");
r2=new JRadioButton("Female");
bg=new ButtonGroup();
bg.add(r1); bg.add(r2);
getContentPane().add(l1);
getContentPane().add(t1);
getContentPane().add(r1);
getContentPane().add(r2);

12. getContentPane().add(b);
getContentPane().add(t2);
b.addActionListener(this);
}
public void actionPerformed(ActionEvent e)
{
msg="Hello ";
if(r1.isSelected())
msg=msg+"Mr. "+t1.getText();
else
msg=msg+"Ms. "+t1.getText();
t2.setText(msg);
}
}

13. OUTPUT:

14. Program No 6: Write a program on JDBC
import java.io.*;
import java.sql.*;
import java.awt.*;
import java.awt.event.*;
class jdbc extends Frame implements ActionListener,WindowListener
{
Label l1,l2,l3;
TextField t1,t2,t3;
Button b1,b2,b3;
Connection con;
Statement st;
jdbc()
{
addWindowListener(this);
l1=new Label("Emp_ID");
l2=new Label("Name");
l3=new Label("Salary");
t1=new TextField("");
t2=new TextField("");
t3=new TextField("");
b1=new Button("Save");
b2=new Button("Search");
b3=new Button("Delete");
setLayout(null);
l1.setBounds(100,100,100,30);
l2.setBounds(100,130,100,30);
l3.setBounds(100,160,100,30);
t1.setBounds(200,100,100,30);
t2.setBounds(200,130,100,30);
t3.setBounds(200,160,100,30);
b1.setBounds(100,190,50,30);
b2.setBounds(150,190,50,30);
b3.setBounds(200,190,50,30);
add(l1);
add(l2);
add(l3);
add(t1);
add(t2);

15. add(t3);
add(b1);
add(b2);
add(b3);
b1.addActionListener(this);
b2.addActionListener(this);
b3.addActionListener(this);
try
{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
System.out.println("Driver Loaded");
con=DriverManager.getConnection("jdbc:odbc:emp");
System.out.println("Connected");
st=con.createStatement();
}
catch(Exception ex)
{
System.out.println("Doesn't Exist");
}
}
public void windowClosed(WindowEvent we)
{
}
public void windowOpened(WindowEvent we)
{
}
public void windowClosing(WindowEvent we)
{
System.exit(0);
}
public void windowActivated(WindowEvent we)
{
}
public void windowDeactivated(WindowEvent we)
{
}
public void windowIconified(WindowEvent we)
{
}
public void windowDeiconified(WindowEvent we)
{
}

16. public void actionPerformed(ActionEvent ae)
{
try
{
if(ae.getSource()==b1)
{
st.execute("Insert into emp
values("+t1.getText()+",'"+t2.getText()+"',"+t3.getText()+")");
t1.setText("");
t2.setText("");
t3.setText("");
}
if(ae.getSource()==b2)
{
ResultSet rs=st.executeQuery("Select * from emp where
emp_id="+t1.getText()+"");
if(rs.next())
{
t1.setText(rs.getString(1));
t2.setText(rs.getString(2));
t3.setText(rs.getString(3));
}
}
if(ae.getSource()==b3)
{
st.execute("Delete from emp where emp_id="+t1.getText()+"");
t1.setText("");
t2.setText("");
t3.setText("");
}
}
catch(Exception ex)
{
}
}
public static void main(String arg[])
{
jdbc j=new jdbc();
j.setTitle("Program No.:-1");
j.setSize(500,500);
j.setVisible(true);
}
}

17. OUTPUT:-

18. Program No 7: Write a program on Servlets
HTML CODE:-
<html>
<head>
<title></title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-
8">
</head>
<body bgcolor="white" text="black">
<script>
function va()
{
if(form1.username.value=="")
{
alert("Error");
return false;
}
if(form1.username.value.length<6)
{
alert("Error");
return false;
}
if(form1.email.value.indexOf("@")==-1)
{
alert("Invalid id");
return false;
}
return true;
}
</script>
<form name="form1"
action="http://localhost:8080/servlet/NewServlet" onsubmit="return
va();">
<table border="0" align="center">
<thead><tr>
<th>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&

19. nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&
nbsp;&nbsp;&nbsp;&nbsp;<u>Servlet</u></th>
<th></th></tr>
</thead>
<tbody>
<tr><br><br><td>Username</td>
<td><input type="text" name="username" value=""
/></td></tr>
<tr><td>Email-Id</td>
<td><input type="text" name="email" value=""
/></td></tr>
<tr><td>City</td>
<td><input type="text" name="city" value="" /></td></tr>
<tr><td>State</td>
<td><input type="text" name="state" value="" /></td></tr>
<tr><td></td>
<td><input type="submit" value="SUBMIT"/></td></tr>
</tbody>
</table>
</form>
</body>
</html>
JAVA CODE:-
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class NewServlet extends HttpServlet {
protected void processRequest(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
try {
out.print("<br><br><center>");

20. String username=request.getParameter("username");
out.println("Username="+username+"<br>");
String email=request.getParameter("email");
out.println("Email-id="+email+"<br>");
String city=request.getParameter("city");
out.println("City="+city+"<br>");
String state=request.getParameter("state");
out.println("State="+state+"<br>");
out.print("</center>");
} finally {
out.close();
}
}
@Override
protected void doGet(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
@Override
protected void doPost(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
@Override
public String getServletInfo() {
return "Short description";
}
}

21. OUTPUT:-

22. Program No 8: Write a program on JSP
<%@ page language="java"%>
<html>
<head>
<title>Even number program in JSP</title>
</head>
<body>
<%
for(int i=0;i<=20;i++)
{
if((i%2)==0)
{
out.print("<center>");
out.print("Even number :"+i);
out.print("<br></center>");
}
}
%>
</body>
</html>

23. OUTPUT:-

24. Program NO 9: Write a program on Sending E-Mail
import java.awt.*;
import java.awt.event.*;
import java.net.*;
import java.io.*;
import java.util.*;
import javax.swing.*;
class MailTestFrame extends JFrame
{
private JTextArea msg, comm;
private JTextField sr,fr,to;
JButton sd;
private Scanner in;
private PrintWriter out;
public MailTestFrame()
{
setSize(300,300);
setTitle("Mail Test");
getContentPane().setLayout(new FlowLayout());
JLabel l1=new JLabel("From: ");
fr=new JTextField(21);
JLabel l2=new JLabel("To:");
to=new JTextField(22);
JLabel l3=new JLabel("SMTP server:");
sr=new JTextField(17);
msg=new JTextArea("",5,10);
JScrollPane sp1=new JScrollPane(msg);
comm=new JTextArea("Mail From", 5, 10);
JScrollPane sp2=new JScrollPane(comm);

25. sd = new JButton("Send");
getContentPane().add(l1);
getContentPane().add(fr);
getContentPane().add(l2);
getContentPane().add(to);
getContentPane().add(l3);
getContentPane().add(sr);
getContentPane().add(sp1);
getContentPane().add(sp2);
getContentPane().add(sd);
sd.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e)
{
new Thread(new Runnable()
{
public void run()
{
comm.setText("");
sendmail();
}
}).start();
}
});
}
public void sendmail()
{
try
{
Socket s=new Socket(sr.getText(),25);
InputStream ins=s.getInputStream();

26. OutputStream outs=s.getOutputStream();
in=new Scanner(ins);
out=new PrintWriter(outs,true);
String host=InetAddress.getLocalHost().getHostName();
receive();
send("Hello "+host);
receive();
send("MAIL FROM:<"+fr.getText()+">");
receive();
send("RCPT TO:<"+to.getText()+">");
receive();
send("DATA");
receive();
send(msg.getText());
receive();
s.close();
}
catch(IOException e)
{
comm.append("Error: "+e);
}
}
public void send(String str)throws IOException
{
comm.append(str);
comm.append("n");
out.print(str.replaceAll("n", "rn"));
out.flush();
}
public void receive()throws IOException

27. {
if(in.hasNextLine())
{
String l=in.nextLine();
comm.append(l);
comm.append("n");
}
}
}
public class MailText
{
public static void main(String[] args)
{
JFrame f =new MailTestFrame();
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setVisible(true);
}
}

28. OUTPUT:

29. Program No10: Write a program on Implementing
RMI
Client Program:
import java.io.*;
import java.rmi.*;
public class NormalClient
{ public static void main(String[] arg)
{
String IpName,FileName,Ip;
StackInter DataObject;
byte[] Content;
try { BufferedReader Buffer=new BufferedReader(new
InputStreamReader(System.in));
System.out.println("Enter the Ip Address :");
IpName = Buffer.readLine();
System.out.println("Enter the File Name :");
FileName = Buffer.readLine();
Ip="rmi://"+IpName+"/hai";
DataObject=(StackInter)Naming.lookup(Ip);
Content = DataObject.st(FileName);
File Fn=new File(FileName);
BufferedOutputStream OutFile=new
BufferedOutputStream(new
FileOutputStream(Fn.getName()));
OutFile.write(Content,0,Content.length);
OutFile.flush();
OutFile.close();
}
catch(Exception e){}
}}

30. Implementation Program:
import java.rmi.*;
import java.rmi.server.*;
import java.io.*;
public class StackImpl extends UnicastRemoteObject implements
StackInter
{
public StackImpl() throws RemoteException {}
public byte[] st(String str) throws RemoteException
{
File f=new File(str);
byte b[]=new byte[(int)f.length()];
try
{
BufferedInputStream f1= new
BufferedInputStream(new FileInputStream(f));
f1.read(b,0,b.length);
f1.close();
}
catch(Exception e) { }
return (b);
}
}
Interface:
import java.rmi.*;
public interface StackInter extends Remote
{

31. byte[] st(String str)throws RemoteException;
}
Server Program:
import java.rmi.*;
public class StackServer
{
public static void main(String arg[])
{
try
{
StackImpl im=new StackImpl();
Naming.rebind("hai",im);
}
catch(Exception e)
{
System.out.println(e);
}
}
}

32. OUTPUT of SERVER file:
java.rmi.ConnectException: Connection refused to host: 127.0.0.1; nested
exception is: java.net.ConnectException: Connection refused: connect
OUTPUT of CLIENT file :
Enter the Ip Address :
127.0.0.1:1052
Enter the File Name :
lok.txt