Q1. Write a java program using multithreading
to execute the threads sequentially.
(Use
Synchronized Method)
class DemoT extends Thread
{
DemoT1
t;
String
name;
public DemoT(String
s,DemoT1 t1)
{
name=s;
start();
t=new
DemoT1();
t1=t;
}
public
void run()
{
t.Display(name);
}
}
class DemoT1
{
synchronized
void Display(String name1)
{
try
{
for(int
i=1;i<=5;i++)
{
System.out.println(name1+" "+i);
}
}catch(Exception
e)
{
}
}
}
public class DemoThread
{
public
static void main(String[] args)
{
DemoT1
td=new DemoT1();
DemoT d=new
DemoT("FIRST ",td);
DemoT
d1=new DemoT("SECOND",td);
DemoT
d2=new DemoT("THIRD ",td);
}
}
Q2. Write a SERVLET program that
provides information about a HTTP request from a client, such as IP address and
browser type. The servlet also provides information about the server on which
the servlet is running, such as the operating system type, and the names of
currently loaded servlets.
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.util.*;
public class info_check extends HttpServlet
{
public void
doGet(HttpServletRequest req,HttpServletResponse res)throws ServletException,
IOException
{
try
{
res.setContentType("text/html");
PrintWriter
out = res.getWriter();
out.println("<html>");
out.println("<body>");
java.util.Properties
p=System.getProperties();
out.println("Server
Name
:"+req.getServerName()+"<br>");
out.println("Operating
System Name :"+p.getProperty("Linux")+"<br>");
out.println("IP
Address
:"+req.getRemoteAddr()+"<br>");
out.println("Remote
User:"+req.getRemoteUser()+"<br>");
out.println("Remote
Host:"+req.getRemoteHost()+"<br>");
out.println("Local
Name
:"+req.getLocalName()+"<br>");
out.println("Server
Port:"+req.getServerPort()+"<br>");
out.println("Servlet
Name :"+this.getServletName()+"<br>");
out.println("Protocol
Name :"+req.getProtocol()+"<br>");
out.println("</html>");
out.println("</body>");
}
catch(Exception
e)
{
e.printStackTrace();
}
}
}
