Some sort of confusion!!!

hirak1984

316 100+

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import java.awt.*;

import java.awt.event.*;

import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.ResultSet;

import java.sql.Statement;
 
import javax.swing.*;

import javax.swing.text.JTextComponent;
 
public class Examples extends JApplet implements ActionListener {

    JTextField jtf, jtf1;
 
    JPasswordField pass = new JPasswordField(15);
 
    Container contentpane = getContentPane();
 
    String ss[] = new String[100];
 
    JTextField jtf2, jtf3;
 
    JLabel label1 = new JLabel("FIRST FILE");
 
    JLabel label2 = new JLabel("SECOND FILE");
 
    String s1[] = new String[2];
 
    int i = 0, flag = 0,back=0;

    //Frame frame1=new JFrame("LOGIN PAGE");
 
    Container contentPane =getContentPane();
 
    public void init() {
 
        jtf = new JTextField(3);

        jtf1 = new JTextField(15);

        JPanel p1 = new JPanel(new GridLayout(3, 1));

        p1.add(new JLabel("SID"));

        p1.add(jtf);

        p1.add(new JLabel("User name:"));
 
        System.out.println(jtf.getText());

        p1.add(jtf1);

        p1.add(new JLabel("Password:"));

        p1.add(pass);

        contentPane.add("North", p1);

        JButton submit = new JButton("SUBMIT");

        submit.setActionCommand("submit");

        submit.addActionListener(this);

        // submit.doClick();

        JButton reset = new JButton("RESET");

        reset.setActionCommand("reset");

        reset.addActionListener(this);

        // reset.doClick();

        JPanel p2 = new JPanel();

        p2.add(submit);
 
        p2.add(reset);

        contentPane.add("Center", p2);

        // setSize(240, 120);
 
    }
 
    public void actionPerformed(ActionEvent ae) {

        String comm = null;

        int i = 0;

        comm = ae.getActionCommand();

        if (comm == "submit" && i == 0) {

            i++;

            getValue(jtf.getText(), jtf1.getText(), pass.getText());

            // System.out.println(pass.getText());

        }

        if (comm == "reset") {

            jtf.setText("");

            jtf1.setText("");

            pass.setText("");
 
            return;

        }
 
        if (comm == "submit1") {
 
        }

        if (flag == 1 && comm != "submit1"&&comm!="submit") {
 
            s1[0] = comm;

            jtf2.setText(comm);

        }

        if (flag == 0 && comm != "submit1"&&comm!="submit") {

            s1[1] = comm;

            jtf3.setText(comm);

        }

        flag++;

        if (flag == 2)

            flag = 0;
 
    }
 
    public void getValue(String sid, String user, String pass) {

        // System.out.println(pass);

        String s1 = "jdbc:oracle:thin:@157.227.93.32:1521:"+sid;

        int i = 0;

        try {

            // System.out.println(pass);

            Class.forName("oracle.jdbc.driver.OracleDriver");

            Connection conn = DriverManager.getConnection(s1, user,pass);

            Statement stmt = conn.createStatement();

            ResultSet rs = stmt

                    .executeQuery("select distinct TABLE_NAME  from  USER_CONSTRAINTS");

            while (rs != null && rs.next()) {

                // System.out.println(pass);

                ss[i] = rs.getString("TABLE_NAME");

                i++;

            }
 
        } catch (Exception e) {

            JOptionPane.showConfirmDialog(null, 

                    "ERROR LOGIN", "ERROR IN LOGIN,TRY AGAIN?", JOptionPane.YES_NO_OPTION);
 
            //e.printStackTrace();

        }

        int ii = 0;

        JFrame theFrame = new JFrame("SELECT TWO TABLES");

        theFrame.pack();

        theFrame.setVisible(true);

        Container content = theFrame.getContentPane();

        jtf2 = new JTextField("FIRST FILE", 15);

        jtf2.setEditable(false);

        jtf2.setBackground(Color.WHITE);

        jtf3 = new JTextField("SECOND FILE", 15);

        jtf3.setEditable(false);

        jtf3.setBackground(Color.WHITE);

        content.setLayout(new FlowLayout());

        label1.setLabelFor(jtf);

        label2.setLabelFor(jtf1);

        JButton jb[] = new JButton[i];

        JButton jb1 = new JButton(

                "<html><body  ><font  type=Comic Sans MS size=5><b><i>SUBMIT</i></b></font></body></html>");

        // ImageIcon icon=new ImageIcon("action.gif");

        content.add(label1);

        content.add(jtf2);

        content.add(label2);

        content.add(jtf3);
 
        // contentPane.add(label2);

        /*

         * label2.setAlignmentX(10); label2.setAlignmentY(3);

         */

        for (ii = 0; ii < i; ii++) {
 
            jb[ii] = new JButton(

                    "<html><body ><font  color=black type=Comic Sans MS size=4><b><i>"

                            + ss[ii] + "</i></b></font></body></html>");

            jb[ii].setActionCommand(ss[ii]);

            jb[ii].addActionListener(this);

            jb[ii].doClick();

            jb[ii]

                    .setToolTipText("<html><body><font  color=black type=Comic Sans MS size=4><b><i>"

                            + ss[ii] + "</i></b></font></body></html>");

            jb[ii].setBackground(Color.CYAN);

            jb[ii].setBorderPainted(true);
 
            jb[ii].setRequestFocusEnabled(true);

            content.add(jb[ii]);
 
        }
 
        jb1.setActionCommand("submit1");

        jb1.addActionListener(this);

        jb1.doClick();

        jb1

                .setToolTipText("<html><body bgcolor ><font  type=Comic Sans MS size=5><b><i>SUBMIT</i></b></font></body></html>");

        jb1.setBackground(Color.red);

        content.add(jb1);
 
    }
 
}

Jan 19 '07 #1

Subscribe Post Reply

1351

hirak1984

316

100+

I write java codes a little ,they run and everything is ok.But still I cant understand what it means by OOPS.I fill very sorry when after seeing my codes my seniors tell that,"it runs,but this is very much procedure oriented",try adapting "object oriented " style.I have added a sample code written by me,wid reference to that,someone please explain,what oops actually means and how can I convert this code into an oops style.Thanks in regards...

[code]

import java.awt.*;
import java.awt.event.*;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;

import javax.swing.*;
import javax.swing.text.JTextComponent;

public class Examples extends JApplet implements ActionListener {
JTextField jtf, jtf1;

JPasswordField pass = new JPasswordField(15);

Container contentpane = getContentPane();

String ss[] = new String[100];

JTextField jtf2, jtf3;

JLabel label1 = new JLabel("FIRST FILE");

JLabel label2 = new JLabel("SECOND FILE");

String s1[] = new String[2];

int i = 0, flag = 0,back=0;
//Frame frame1=new JFrame("LOGIN PAGE");

Container contentPane =getContentPane();

public void init() {

jtf = new JTextField(3);
jtf1 = new JTextField(15);
JPanel p1 = new JPanel(new GridLayout(3, 1));
p1.add(new JLabel("SID"));
p1.add(jtf);
p1.add(new JLabel("User name:"));

System.out.println(jtf.getText());
p1.add(jtf1);
p1.add(new JLabel("Password:"));
p1.add(pass);
contentPane.add("North", p1);
JButton submit = new JButton("SUBMIT");
submit.setActionCommand("submit");
submit.addActionListener(this);
// submit.doClick();
JButton reset = new JButton("RESET");
reset.setActionCommand("reset");
reset.addActionListener(this);
// reset.doClick();
JPanel p2 = new JPanel();
p2.add(submit);

p2.add(reset);
contentPane.add("Center", p2);
// setSize(240, 120);

}

public void actionPerformed(ActionEvent ae) {
String comm = null;
int i = 0;
comm = ae.getActionCommand();
if (comm == "submit" && i == 0) {
i++;
getValue(jtf.getText(), jtf1.getText(), pass.getText());
// System.out.println(pass.getText());
}
if (comm == "reset") {
jtf.setText("");
jtf1.setText("");
pass.setText("");

return;
}

if (comm == "submit1") {

}
if (flag == 1 && comm != "submit1"&&comm!="submit") {

s1[0] = comm;
jtf2.setText(comm);
}
if (flag == 0 && comm != "submit1"&&comm!="submit") {
s1[1] = comm;
jtf3.setText(comm);
}
flag++;
if (flag == 2)
flag = 0;

}

public void getValue(String sid, String user, String pass) {
// System.out.println(pass);
String s1 = "jdbc:oracle:thin:@157.227.93.32:1521:"+sid;
int i = 0;
try {
// System.out.println(pass);
Class.forName("oracle.jdbc.driver.OracleDriver");
Connection conn = DriverManager.getConnection(s1, user,pass);
Statement stmt = conn.createStatement();
ResultSet rs = stmt
.executeQuery("select distinct TABLE_NAME from USER_CONSTRAINTS");
while (rs != null && rs.next()) {
// System.out.println(pass);
ss[i] = rs.getString("TABLE_NAME");
i++;
}

} catch (Exception e) {
JOptionPane.showConfirmDialog(null,
"ERROR LOGIN", "ERROR IN LOGIN,TRY AGAIN?", JOptionPane.YES_NO_OPTION);

//e.printStackTrace();
}
int ii = 0;
JFrame theFrame = new JFrame("SELECT TWO TABLES");
theFrame.pack();
theFrame.setVisible(true);
Container content = theFrame.getContentPane();
jtf2 = new JTextField("FIRST FILE", 15);
jtf2.setEditable(false);
jtf2.setBackground(Color.WHITE);
jtf3 = new JTextField("SECOND FILE", 15);
jtf3.setEditable(false);
jtf3.setBackground(Color.WHITE);
content.setLayout(new FlowLayout());
label1.setLabelFor(jtf);
label2.setLabelFor(jtf1);
JButton jb[] = new JButton[i];
JButton jb1 = new JButton(
"<html><body >SUBMIT</body></html>");
// ImageIcon icon=new ImageIcon("action.gif");
content.add(label1);
content.add(jtf2);
content.add(label2);
content.add(jtf3);

// contentPane.add(label2);
/*
* label2.setAlignmentX(10); label2.setAlignmentY(3);
*/
for (ii = 0; ii < i; ii++) {

jb[ii] = new JButton(
"<html><body >"
+ ss[ii] + "</body></html>");
jb[ii].setActionCommand(ss[ii]);
jb[ii].addActionListener(this);
jb[ii].doClick();
jb[ii]
.setToolTipText("<html><body>"
+ ss[ii] + "</body></html>");
jb[ii].setBackground(Color.CYAN);
jb[ii].setBorderPainted(true);

jb[ii].setRequestFocusEnabled(true);
content.add(jb[ii]);

}

jb1.setActionCommand("submit1");
jb1.addActionListener(this);
jb1.doClick();
jb1
.setToolTipText("<html><body bgcolor >SUBMIT</body></html>");
jb1.setBackground(Color.red);
content.add(jb1);

}

}

Jan 19 '07 #2

r035198x

13,262

8TB

I write java codes a little ,they run and everything is ok.But still I cant understand what it means by OOPS.I fill very sorry when after seeing my codes my seniors tell that,"it runs,but this is very much procedure oriented",try adapting "object oriented " style.I have added a sample code written by me,wid reference to that,someone please explain,what oops actually means and how can I convert this code into an oops style.Thanks in regards...

[code]

import java.awt.*;
import java.awt.event.*;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;

import javax.swing.*;
import javax.swing.text.JTextComponent;

public class Examples extends JApplet implements ActionListener {
JTextField jtf, jtf1;

JPasswordField pass = new JPasswordField(15);

Container contentpane = getContentPane();

String ss[] = new String[100];

JTextField jtf2, jtf3;

JLabel label1 = new JLabel("FIRST FILE");

JLabel label2 = new JLabel("SECOND FILE");

String s1[] = new String[2];

int i = 0, flag = 0,back=0;
//Frame frame1=new JFrame("LOGIN PAGE");

Container contentPane =getContentPane();

public void init() {

jtf = new JTextField(3);
jtf1 = new JTextField(15);
JPanel p1 = new JPanel(new GridLayout(3, 1));
p1.add(new JLabel("SID"));
p1.add(jtf);
p1.add(new JLabel("User name:"));

System.out.println(jtf.getText());
p1.add(jtf1);
p1.add(new JLabel("Password:"));
p1.add(pass);
contentPane.add("North", p1);
JButton submit = new JButton("SUBMIT");
submit.setActionCommand("submit");
submit.addActionListener(this);
// submit.doClick();
JButton reset = new JButton("RESET");
reset.setActionCommand("reset");
reset.addActionListener(this);
// reset.doClick();
JPanel p2 = new JPanel();
p2.add(submit);

p2.add(reset);
contentPane.add("Center", p2);
// setSize(240, 120);

}

public void actionPerformed(ActionEvent ae) {
String comm = null;
int i = 0;
comm = ae.getActionCommand();
if (comm == "submit" && i == 0) {
i++;
getValue(jtf.getText(), jtf1.getText(), pass.getText());
// System.out.println(pass.getText());
}
if (comm == "reset") {
jtf.setText("");
jtf1.setText("");
pass.setText("");

return;
}

if (comm == "submit1") {

}
if (flag == 1 && comm != "submit1"&&comm!="submit") {

s1[0] = comm;
jtf2.setText(comm);
}
if (flag == 0 && comm != "submit1"&&comm!="submit") {
s1[1] = comm;
jtf3.setText(comm);
}
flag++;
if (flag == 2)
flag = 0;

}

public void getValue(String sid, String user, String pass) {
// System.out.println(pass);
String s1 = "jdbc:oracle:thin:@157.227.93.32:1521:"+sid;
int i = 0;
try {
// System.out.println(pass);
Class.forName("oracle.jdbc.driver.OracleDriver");
Connection conn = DriverManager.getConnection(s1, user,pass);
Statement stmt = conn.createStatement();
ResultSet rs = stmt
.executeQuery("select distinct TABLE_NAME from USER_CONSTRAINTS");
while (rs != null && rs.next()) {
// System.out.println(pass);
ss[i] = rs.getString("TABLE_NAME");
i++;
}

} catch (Exception e) {
JOptionPane.showConfirmDialog(null,
"ERROR LOGIN", "ERROR IN LOGIN,TRY AGAIN?", JOptionPane.YES_NO_OPTION);

//e.printStackTrace();
}
int ii = 0;
JFrame theFrame = new JFrame("SELECT TWO TABLES");
theFrame.pack();
theFrame.setVisible(true);
Container content = theFrame.getContentPane();
jtf2 = new JTextField("FIRST FILE", 15);
jtf2.setEditable(false);
jtf2.setBackground(Color.WHITE);
jtf3 = new JTextField("SECOND FILE", 15);
jtf3.setEditable(false);
jtf3.setBackground(Color.WHITE);
content.setLayout(new FlowLayout());
label1.setLabelFor(jtf);
label2.setLabelFor(jtf1);
JButton jb[] = new JButton[i];
JButton jb1 = new JButton(
"<html><body >SUBMIT</body></html>");
// ImageIcon icon=new ImageIcon("action.gif");
content.add(label1);
content.add(jtf2);
content.add(label2);
content.add(jtf3);

// contentPane.add(label2);
/*
* label2.setAlignmentX(10); label2.setAlignmentY(3);
*/
for (ii = 0; ii < i; ii++) {

jb[ii] = new JButton(
"<html><body >"
+ ss[ii] + "</body></html>");
jb[ii].setActionCommand(ss[ii]);
jb[ii].addActionListener(this);
jb[ii].doClick();
jb[ii]
.setToolTipText("<html><body>"
+ ss[ii] + "</body></html>");
jb[ii].setBackground(Color.CYAN);
jb[ii].setBorderPainted(true);

jb[ii].setRequestFocusEnabled(true);
content.add(jb[ii]);

}

jb1.setActionCommand("submit1");
jb1.addActionListener(this);
jb1.doClick();
jb1
.setToolTipText("<html><body bgcolor >SUBMIT</body></html>");
jb1.setBackground(Color.red);
content.add(jb1);

}

}

Please do not double post. OOP is not something you can learn with one snippet of code. Get a text to read about it e.g Thinking in Java or visit www.oopweb.com.

Jan 19 '07 #3

abctech

157

100+

Hi hirak1984

To get an idea about the basic difference read this article:-
http://en.wikipedia.org/wiki/Procedural_programming

Jan 20 '07 #4

hirak1984

316

100+

hey thanx for the two links.they r really helpful.But i must mention another book,which also helped me,and i hope will help others with similar queries.
it is SCJP 5 by Kathey Sierra and Bert Bates

Jan 22 '07 #5

RohiniSrinivasan

OOPs is just an object oriented programming strategy.
In OOPs all that we handle is in the form of objects.Even when we want to access a function,or a member of a class then we need the object of that particular class.Object is just an instance of a class or they are called as basic run time entities.

Jan 22 '07 #6

r035198x

13,262

8TB

hey thanx for the two links.they r really helpful.But i must mention another book,which also helped me,and i hope will help others with similar queries.
it is SCJP 5 by Kathey Sierra and Bert Bates

Thanks for the other reference as well.

Jan 22 '07 #7

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Some sort of confusion!!!

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