GTU Paper Solution and Material as Per GTU syllabus

Go to this website and download the Study material of GTU Syllabus.

http://gtu-paper.blogspot.com/

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Simple Demo Of RMI Registry Program

Demointerface.java

/**

 *

 * @author Nish

 */

public interface DemoInterface extends java.rmi.Remote{

    

              public String sayDemo() throws java.rmi.RemoteException;

}

Demosever.java

import java.rmi.RemoteException;

import java.rmi.registry.LocateRegistry;

import java.rmi.server.UnicastRemoteObject;

/**

 *

 * @author Nish

 */

public class DemoServer implements DemoInterface{

    

String message;

    

public DemoServer(){

        

super();

    

}

    

public DemoServer(String msg){

        

message = msg;

   

 }    

    

@Override

    

public String sayDemo() throws RemoteException {

       return message;

    

}

    

public static void main(String []args){

  

      try {

            

DemoInterface  h = new DemoServer("Hello");

            

DemoInterface stub = (DemoInterface)UnicastRemoteObject.exportObject(h, 0);

            

java.rmi.registry.Registry reg = LocateRegistry.getRegistry();

  

          reg.rebind("Hello", stub);

            

System.out.println("Server is ready for Operation");

        

} 

catch (Exception ex) {}

        

    

}

}

Democlient.java

import java.rmi.registry.LocateRegistry;

import java.rmi.registry.Registry;

/**

 *

 * @author Nish

 */

public class DemoClient {

    

public static void main(String []args){

      

  try{

           

 Registry reg = LocateRegistry.getRegistry("localhost");

           DemoInterface h = (DemoInterface)reg.lookup("Hello");

            

System.out.println(h.sayDemo());

        

}

catch(Exception e){}

  

  }

}

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Steps To Run RMI Program in JAVA

Using the Following steps you can able to run your RMI program in JAVA 

1) First Comiple all java class
javac *.java
2) Then after start rmi registry
start rmiregistry
3) Then after generate stub and skelton using rmic,
rmic (implemented class)
4) Then after run server
java Server
5) Then after open new command prompt in same directory and run client
java Client

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Java Swing Look and Feel Feature-Example-Set Motif,Metal and Windows Look and Feel

Write a following code in netbeans IDE 7.1 and save file as RegistrationForm.java and run it and you can able to set your look and feel in your application.  

package registrationform;

/**

 *

 * @author NISH

 */

import java.awt.Container;

import java.awt.Font;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.ItemEvent;

import java.awt.event.ItemListener;

import javax.swing.*;

public class RegistrationForm extends JFrame implements ItemListener,ActionListener{

    JLabel title,lookfeel;

    JLabel l[]=new JLabel[7];

    JTextField t[]=new JTextField[7];

    JPasswordField tp;

    String lbl[]=new String[7];

    Container c;

    JComboBox cb;

    JRadioButton male,female;

    JOptionPane jop;

    ButtonGroup grp;

    JButton breg,bcncl;

    int vsp=80,hsp=100;

    int spx,spy;

    public RegistrationForm()

    {

        lbl[0]="Name :"; lbl[1]="Address :"; lbl[2]="Gender :"; lbl[3]="Email :"; lbl[4]="Phno :"; lbl[5]="Uname :"; lbl[6]="Password :";

        c=this.getContentPane();

        setLayout(null);

        lookfeel=new JLabel("Select LookAndFill :");

        lookfeel.setBounds(5, 5, 120, 20);

        c.add(lookfeel);

        cb=new JComboBox();

        cb.setBounds(125, 5, 75, 20);

        cb.addItem("Metal");

        cb.addItem("Motif");

        cb.addItem("Window");

        c.add(cb);

        title=new JLabel("Registration");

        title.setFont(new Font("Times New Roman", NORMAL, 20));

        title.setBounds(170, 30, 120,90);

        c.add(title);

       

        spy=30;

        spx=100;

        for(int i=0;i<=6;i++)

        {

            l[i]=new JLabel(lbl[i]);

            l[i].setBounds(vsp,hsp , 80, 40);

            hsp=hsp + spy;

            c.add(l[i]);

        }

        male=new JRadioButton("Male");

        female=new JRadioButton("Female");

        vsp=80;

        vsp=vsp+spx;

        hsp=110;

        for(int i=0;i<=6;i++)

        {

            t[i]=new JTextField("");

            if(i==2)

            {

                    male.setBounds(vsp,hsp, 60, 20);

                    c.add(male);

                    female.setBounds(vsp + 70,hsp, 100, 20);

                    c.add(female);

                    male.setSelected(true);

                    grp=new ButtonGroup();

                    grp.add(male);

                    grp.add(female);

            }

            else if(i==6)

            {

                tp=new JPasswordField();

                tp.setBounds(vsp, hsp, 170, 20);

                c.add(tp);

            }

            else

            {

                t[i].setBounds(vsp,hsp , 170, 20);

                c.add(t[i]);

            }

            hsp=hsp + spy;

        }

        breg=new JButton("Submit");

        breg.setBounds(110, hsp+spy, 90, 30);

        c.add(breg);

       

        bcncl=new JButton("Cancel");

        bcncl.setBounds(220, hsp+spy, 90, 30);

        c.add(bcncl);

        cb.addItemListener(this);

        breg.addActionListener(this);

        bcncl.addActionListener(this);

    }

    public static void main(String[] args) {

        RegistrationForm rg=new RegistrationForm();

        rg.setTitle("Registration Form");

        rg.setSize(450, 500);

        rg.setResizable(false);

        rg.show();

    }

    @Override

    public void itemStateChanged(ItemEvent e) {

        try {

            if(cb.getSelectedItem().toString() == "Metal")

            {

                UIManager.setLookAndFeel("javax.swing.plaf.metal.MetalLookAndFeel");

            }

            if(cb.getSelectedItem().toString() == "Motif")

            {

                UIManager.setLookAndFeel("com.sun.java.swing.plaf.motif.MotifLookAndFeel");

            }

            if(cb.getSelectedItem().toString() == "Window")

            {              UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");

            }

            SwingUtilities.updateComponentTreeUI(c);

        }

        catch(Exception ex)

        {

        }

    }

    @Override

    public void actionPerformed(ActionEvent e) {

        jop=new JOptionPane();

        String str="";

        if(e.getSource().equals(breg))

        {

                for(int i=0;i<=6;i++)

                {

                    if(i==2)

                    {

                        if(male.isSelected())

                        {

                            str= str + lbl[i] + " " + "Male" + "\n";

                        }

                        else

                        {

                            str= str + lbl[i] + " " + "FeMale" + "\n";

                        }

                    }

                    else if(i==6)

                    {

                        str= str + lbl[i] + " " + tp.getText().toString() + "\n";

                    }

                    else

                    {  

                        str= str + lbl[i] + " " + t[i].getText().toString() + "\n";

                      

                    } 

                } 

               jop.showMessageDialog(c,str,null, JOptionPane.INFORMATION_MESSAGE);

        }

        for(int i=0;i<=6;i++)

        {

            t[i].setText("");

        }

        tp.setText("");

        if(e.getSource().equals(bcncl))

        {

            for(int i=0;i<=6;i++)

            {

                t[i].setText("");

            }

            tp.setText("");

        }

    }

}

Output:-

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Make Analog Clock using java

write a following code in netbeans IDE 7.1 and save file as Analogclock.java and run it and you will have your own Analog Clock... 

package analogclock;

/**

 *

 * @author NISH

 */

import java.applet.Applet;

import java.awt.Color;

import java.awt.Graphics;

import java.util.Calendar;

/*

 <applet code="Clck" width=1500 height=3000>

 </applet>

 */

public class Analogclock extends Applet implements Runnable

{

    private static final double TWO_PI   = 2.0 * Math.PI;

    private Calendar nw = Calendar.getInstance();

    int width=300,hight=300;

    int xcent= width / 2,ycent= hight / 2;

    int minhand,maxhand;

    double rdns;

    int dxmin,dymin,dxmax,dymax;

    double radins,sine,cosine;

    double fminutes;

    Thread t=null;

    Boolean stopFlag;

  

    public void start()

    {

       t=new Thread(this);

       stopFlag = false;

       t.start();

    }

    public void run()

    {

       for( ; ; )

       {

              try {

                     updateTime();

                     repaint();

                     Thread.sleep(100);

                     if(stopFlag)

                        break;

                   }

              catch(InterruptedException e) {}

       }

    }

    public void stop()

    {

        stopFlag=true;

        t=null;

    }

    private void updateTime() {

       

        nw.setTimeInMillis(System.currentTimeMillis());

    }

    public void paint(Graphics g)

    {

        int hours   = nw.get(Calendar.HOUR);

        int minutes = nw.get(Calendar.MINUTE);

        int seconds = nw.get(Calendar.SECOND);

        int millis  = nw.get(Calendar.MILLISECOND);

        minhand=width /8;

        maxhand=width /2;

        rdns= (seconds + ((double)millis/1000)) / 60.0;

        drw(g,rdns,0,maxhand);

        g.drawString(hours + ":" + minutes + ":" + seconds,  minhand+90, maxhand+60);

        minhand = 0;                    // Minute hand starts in middle.

        maxhand = width / 3;

        fminutes = (minutes + rdns) / 60.0;

        drw(g, fminutes, 0, maxhand);

       minhand = 0;                    // Minute hand starts in middle.

        maxhand = width / 4;

        drw(g, (hours + fminutes) / 12.0, 0, maxhand);

        g.drawOval(0,0, width, hight);

        g.drawString("9", xcent-145, ycent -0);

        g.drawString("3", xcent+140, ycent -0);

        g.drawString("6",xcent , ycent+145);

        g.drawString("12",xcent , ycent-135);

     }

   

    public void drw(Graphics g,double prct,int minRadius, int maxRadius) 

    {

        radins= (0.5 - prct)* TWO_PI;

        sine   = Math.sin(radins);

        cosine = Math.cos(radins);

        dxmin = xcent + (int)(minRadius * sine);

        dymin = ycent + (int)(minRadius * cosine);

       

        dxmax = xcent + (int)(maxRadius * sine);

        dymax = ycent + (int)(maxRadius * cosine);

      

        g.drawLine(dxmin, dymin, dxmax, dymax);

    }

   

}

output:-

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