Ramanjaneyulu Dayinaboyina: మార్చి 2012

30, మార్చి 2012, శుక్రవారం

LAYOUT MANAGERS IN JAVA

A SAMPLE APPLICATION DEVELOPMENT BY USING SWING COMPONENTS

//creating a shopping form

//here I am creating a sample form by using the JApplet class in the swings

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

public class MyForm extends JApplet implements ActionListener

{

//vars

JLabel n,a,i,lbl;

JTextField name;

JTextArea addr;

JList lst;

JButton b1,b2;

Object x[];

Container c;

String str="" ,str1="",str2="";

public void init()

{

//create frame and content pane

JFrame jf = new JFrame();

c=jf.getContentPane();

c.setBackground(Color.yellow);

c.setLayout(null);

jf.setSize(500,400);

jf.setTitle("MyForm");

jf.setVisible(true);

//heading

lbl=new JLabel();

lbl.setForeground(Color.red);

lbl.setFont(new Font("Dialog",Font.BOLD,36));

lbl.setText(" ONLINE SHOPPING");

lbl.setBounds(200,10,550,40);

c.add(lbl);

//label and text fields for name

n= new JLabel("Enter name:",JLabel.RIGHT);

name=new JTextField(20);

n.setBounds(50,50,150,40);

name.setBounds(200,50,200,40);

c.add(n);

c.add(name);

//Label and textArea for address

a=new JLabel("Enter address:",JLabel.RIGHT);

addr=new JTextArea(6,20);

a.setBounds(50,100,150,40);

addr.setBounds(200,100,200,150);

c.add(addr);

c.add(a);

//a Label and ListBox for user Selection

i=new JLabel("select Items:",JLabel.RIGHT);

String data[] ={"T-shirts","Trousers","shorts","Jeans"};

lst=new JList(data);

i.setBounds(50,270,150,40);

lst.setBounds(200,270,200,100);

c.add(i);

c.add(lst);

//Push Buttons

b1= new JButton("ok");

b2= new JButton("Cancel");

b1.setBounds(200,400,150,40);

b2.setBounds(400,400,70,40);

c.add(b1);

c.add(b2);

//add ActionListener to buttons

b1.addActionListener(this);

b2.addActionListener(this);

}

public void actionPerformed(ActionEvent ae)

{

str=ae.getActionCommand();

if(str.equals("ok"))

{

str1+=name.getText()+"\n";

str1+=addr.getText()+"\n";

x=lst.getSelectedValues();

for(int i=0;i<x.length;i++)

str2+=(String)x[i]+"\n";

//send the data into addr

addr.setText(str1+str2);

str1="";

str2="";

}

else

{

name.setText("");

addr.setText("");

lst.clearSelection();

}

//html file -1 it contains the above form class

<! This page contains My form class>

<html>

</applet>

</html>

Another animated application

// here I am designing the animate class by using the awt and applet conecpts

import java.awt.*;

import java.applet.*;

public class Animate extends Applet

{

public void init()

{

}

public void paint(Graphics g)

{

Image i = getImage(getDocumentBase(),"Gajanan.gif");

for(int x=0;x<800;x++)

{

g.drawImage(i,x,0,this);

try

{

Thread.sleep(20);

}

catch(InterruptedException ie)

{ }

}

//html file with animate.class

<! this page contains Animate class>

<html>

</applet>

</html>

IDE S FOR THE SOFTWARE DEVELOPMENT IN JAVA

AWT APPLETS AND SWING COMPONENTS A QUICK REFERENCE

import java.awt.*;
import java.awt.event.*;

class wh extends WindowAdapter
{
public void windowClosing(WindowEvent we)
{
System.out.println("this is for window closing");
System.exit(0);
}
}

class frame extends Frame implements ActionListener,ItemListener
                {

          Checkbox c1,c2,c3,c4,c5,c6;
          boolean d1,d2,d3,d4,d5,d6;
          Font f1;
             int x;

        frame()
        {
setLayout(null);

//u edit this code instead of manually repeating the same code u use for loop which is easy and reduce the length of the code and increase the readability of the program
f1=new Font("Sanserif",Font.ITALIC,20);
Label l1=new Label("enter the name",Label.LEFT);
l1.setBounds(400,400,100,10);

Label l2=new Label("father name",Label.LEFT);
l2.setBounds(400,420,100,10);

Label l3=new Label("house no",Label.LEFT);
l3.setBounds(400,440,100,10);

Label l4=new Label("street",Label.LEFT);
l4.setBounds(400,460,100,10);

Label l5=new Label("town",Label.LEFT);
l5.setBounds(400,480,100,10);

Label l6=new Label("district",Label.LEFT);
l6.setBounds(400,500,100,10);

Label l7=new Label("state",Label.LEFT);
l7.setBounds(400,520,100,10);

Label l8=new Label("E-mail",Label.LEFT);
l8.setBounds(400,540,100,10);

Label l9=new Label("mobileno",Label.LEFT);
l9.setBounds(400,560,100,10);

Label l10=new Label("this is designed by kalyan",Label.LEFT);
l10.setBounds(400,580,100,10);

add(l1);
add(l2);
add(l3);
add(l4);
add(l5);
add(l6);
add(l7);
add(l8);
add(l9);
add(l10);

Button b1=new Button("red");
b1.addActionListener(this);
b1.setBounds(700,500,50,16);

Button b2=new Button("green");
b2.setBounds(700,520,50,16);
b2.addActionListener(this);

Button b3=new Button("yellow");
b3.setBounds(700,540,50,16);
b3.addActionListener(this);

Button b4=new Button("cyan");
b4.setBounds(700,560,50,16);
b4.addActionListener(this);

Button b5=new Button("magenta");
b5.setBounds(700,480,50,16);
b5.addActionListener(this);

c1=new Checkbox("title1");
c1.addItemListener(this);
c1.setBounds(100,400,100,20);

add(b1);
add(b2);
add(b3);
add(b4);
add(b5);

add(c1);

}
public void itemStateChanged(ItemEvent ie)
{
d1=c1.getState();
repaint();
}

public void actionPerformed(ActionEvent ae)
{
String s=ae.getActionCommand();
if(s.equals("red"))
x=1;
else
if(s.equals("green"))
x=2;
else
if(s.equals("yellow"))
x=3;
else
if(s.equals("cyan"))
x=4;
else
if(s.equals("magenta"))
x=5;
repaint();
}

public void paint(Graphics g)
{
Font f=new Font("Helvetica",Font.BOLD,14);
g.setFont(f);
g.drawString("@ramu dayinaboyina ",600,400);
g.setColor(Color.red);
g.drawString("1)D.C.M.E(Diploma in ComputerMaintainceEngg)",50,300);
g.drawString("2)D.C.E(Dipoma in Civil Engg)",50,320);
g.drawString("3)D.E.E.E(Diploma in Electrical &Electronical Engg)",50,340);
g.drawString("4)D.E.C.E(Diploma in Electronics &Electrical Engg)",50,360);
g.drawString("5)D.M.E(Diploma in Mechanical Engg)",50,380);
g.setColor(Color.green);
f=new Font("Helvetica",Font.BOLD,24);
g.setFont(f);
g.drawString("POLYTECHNIC CHIRALA" ,50,100);
g.setColor(Color.blue);
g.drawString("The Courses Offered for the year 2006-2007 are",50,200);
g.setColor(Color.cyan);
g.drawString("This is the HomePabe ",220,250);
g.drawString("this college is located in 10 acars and large buldings ,play grounds",50,260);

if(d1==true)
{
g.setColor(Color.cyan);
g.drawString("you clicked title1",40,20);
}

if(x==1)
{
g.setFont(f1);
g.drawString("you are implementing the sanserif font",400,400);
setBackground(Color.red);
}

if(x==1)
{
g.setFont(f1);
g.drawString("you are implementing the sanserif font with red color",200,400);
setBackground(Color.red);
}
if(x==2)
{
g.setFont(f1);
g.drawString("you are implementing the sanserif font with green color",200,400);
setBackground(Color.green);
}
if(x==3)
{
g.setFont(f1);
g.drawString("you are implementing the sanserif font with yellow color",200,400);
setBackground(Color.yellow);
}
if(x==4)
{
g.setFont(f1);
g.drawString("you are implementing the sanserif font with cyan color",200,400);
setBackground(Color.cyan);
}
if(x==5)
{
g.setFont(f1);
g.drawString("you are implementing the sanserif font with magenta color",200,400);
setBackground(Color.magenta);
}
}
public static void main(String r[])
{
frame f=new frame();
f.setVisible(true);
f.setSize(300,250);
f.setTitle("this is an example for the java frames");
System.out.println("to exit from the program press ctrl+c");
f.setBounds(0,0,1240,860);
f.setBackground(Color.yellow);
boolean b=f.isResizable();
System.out.println("the return value is true or false for resizeing"+b);

b=f.isResizable();
System.out.println("the return value is true or false for resizeing"+b);

int c=f.getState();
System.out.println("the value of the state of the frame is "+c);

f.setState(4);
c=f.getState();
System.out.println("after setting of the the value of the state of the frame is "+c);

System.out.println("the value fo the under corated is "+b);
System.out.println("ok successfully you created the frame concept in this session");

c=f.getCursorType();
System.out.println("the style fo the cursor is "+c);

f.addWindowListener(new wh());

}}

WEB SERVERS FOR THE JEE IMPLEMENTATION

JMS IN JEE

SECONDARY STORAGE IMPLEMENTATION CONCEPTS IN JAVA BY USING THIS PROCEDURE U CAN SEE THE ORACLE PROCEDURE CODE AT COMMAND PROMPT THIS IS USEFUL WHILE DOING JAVA DATABASE STORED PROGRAM CONCEPT

import java.lang.*;

import java.io.*;

class emp implements Serializable

{

int eno;

String name;

double sal;

void display()

{

System.out.println(eno+"\t"+name+"\t"+sal);

}

public class file

{

public static void main(String args[]) throws IOException

{

emp e=new emp();

ObjectOutputStream oos=null;

ObjectInputStream ois=null;

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

System.out.println("enter how many employees");

int n=Integer.parseInt(br.readLine());

oos=new ObjectOutputStream(new BufferedOutputStream(new FileOutputStream("emp")));

try

{

for(int i=0;i<n;i++)

{

System.out.println("enter the employee number");

e.eno=Integer.parseInt(br.readLine());

System.out.println("enter the employee name");

e.name=br.readLine();

System.out.println("enter the salary");

e.sal=Double.parseDouble(br.readLine());

oos.writeObject(e);

oos.reset();

}

oos.close();

}

catch(NotSerializableException ne)

{

System.out.println(ne);

}

catch(InvalidClassException ie )

{

System.out.println(ie);

}

catch(IOException ioe)

{

System.out.println(ioe);

}

System.out.println("reading objects from the file");

ois=new ObjectInputStream(new BufferedInputStream(new FileInputStream("emp")));

try

{

for(int i=0;i<n;i++)

{

emp e1=(emp)ois.readObject();

e1.display();

}

ois.close();

}

catch(ClassNotFoundException ce )

{

System.out.println(ce);

}

catch(IOException ioe)

{

System.out.println(ioe);

}

}//end of main();

}//end of class

SQL> select * from user_source;

NAME TYPE LINE TEXT

--------------------------------------------------------------------------------

PROC2 PROCEDURE 1 procedure proc2(n number , nm out varchar) //this is the original source code line

PROC2 PROCEDURE 2 as

PROC2 PROCEDURE 3 begin

PROC2 PROCEDURE 4 select name into nm from emp10 where id=n;

PROC2 PROCEDURE 5 end proc2;