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HarithaAdapa
java
1 Answer(s)      4 years and 3 months ago
Posted in : Java Beginners


Hi

iam created a new registration form as a desktop application using swings.
and this is the code: pls have a look




import mysql.DataAcc;
// import package class for getting database connection
import java.sql.*;
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
class D1 extends JFrame implements ActionListener{
//instance variable
String str="";
/* Swing classess */
JLabel l,l1,l2,l3,l4,title,l5,l6;
JTextField t,t1,t2,t3,t4;
JButton b,b1,b2,b3,b4,b5,exit;
JTextArea ta,ta1;
//create new instance of class D1
D1() {
setSize(700,500); //set Frame Size
Container c=getContentPane(); //Objects add to Container
c.setLayout(null);
ta=new JTextArea(30,30);
title=new JLabel("Employee Information");
l1=new JLabel("Employee Number");
l2=new JLabel("Employee Name");
l=new JLabel("Employee Password");
l3=new JLabel("Employee Salary");
l4=new JLabel("Employee Address");
l5=new JLabel("Database Operation's ");
t1=new JTextField(10);
t2=new JTextField(10);
t =new JTextField(10);
t3=new JTextField(10);
t4=new JTextField(10);
b=new JButton("Reports");
b1=new JButton("Insert");
b2=new JButton("Delete");
b3=new JButton("Update");
b4=new JButton("Single");
b5=new JButton("View");
exit=new JButton("Exit");
//set bounds() palce components in a givel dimesions in the Frame
title.setBounds(200,10,150,100);
//components add to Continer
c.add(title);
l1.setBounds(100,40,150,100);
c.add(l1);
l2.setBounds(100,70,150,100);
c.add(l2);
l.setBounds(100,100,150,100);
c.add(l);
l3.setBounds(100,130,150,100);
c.add(l3);
l4.setBounds(100,160,150,100);
c.add(l4);
l5.setBounds(200,230,250,100);
c.add(l5);
t1.setBounds(250,80,150,20);
c.add(t1);
t2.setBounds(250,110,150,20);
c.add(t2);
t.setBounds(250,140,150,20);
c.add(t);
t3.setBounds(250,170,150,20);
c.add(t3);
t4.setBounds(250,210,150,20);
c.add(t4);
//add buttons to the ActionListener Interface
b .addActionListener(this);
b1.addActionListener(this);
b2.addActionListener(this);
b3.addActionListener(this);
b4.addActionListener(this);
b5.addActionListener(this);
exit.addActionListener(this);
b .setBounds(10,240,80,20);
c.add(b);
b1.setBounds(100,240,80,20);
c.add(b1);
b2.setBounds(190,240,80,20);
c.add(b2);
b3.setBounds(280,240,80,20);
c.add(b3);
b4.setBounds(370,240,80,20);
c.add(b4);
b5.setBounds(460,240,80,20);
c.add(b5);
exit.setBounds(550,240,80,20);
c.add(exit);
ta.setBounds(200,300,270,100);
c.add(ta);
setVisible(true);
}
public void actionPerformed(ActionEvent e) {
Connection con=null;
DataAcc d=new DataAcc();
if(e.getSource()==b1) {
ta.setText(str);
/*get values from textfields*/
int sno=Integer.parseInt(t1.getText());
String sname=t2.getText();
String spwd =t.getText();
double sal=Double.parseDouble(t3.getText());
String address=t4.getText();
try {
con=d.getConnect();
PreparedStatement pst=con.prepareStatement("insert into test values(?,?,?,?,?)");
pst.setInt(1,sno);
pst.setString(2,sname);
pst.setString(3,spwd);
pst.setDouble(4,sal);
pst.setString(5,address);
int i=pst.executeUpdate();
if(i>0)
l5.setText("Insertion Operation Performed");
else
l5.setText("Insertion Operation Failed");
pst.clearParameters();
/*text field values clear after insertion performed*/
t1.setText("");
t2.setText("");
t.setText("");
t3.setText("");
t4.setText("");
}catch(Exception ae){
ae.printStackTrace();
}
}//Buuton B1 if

if(e.getSource()==b5) {
ta.setText(str);
try {
con=d.getConnect();
PreparedStatement pst=con.prepareStatement("select * from test");
ResultSet rs=pst.executeQuery();
while(rs.next()) {
int n1=rs.getInt(1);
String n2=rs.getString(2);
String n=rs.getString(3);
double n3=rs.getDouble(4);
String n4=rs.getString(5);
/*append all values to the text area by ta.append()*/
ta.append(""+n1+"\t"+n2+"\t"+n+"\t"+n3+"\t"+n4+"\n");
//JOptionPane.showMessageDialog(null,n1+"\n"+n2+"\n"+n3+"\n"+n4);
l5.setText("View test Table Data");
}
}catch(Exception ae){
ae.printStackTrace();
}
}//Button b5 if
if(e.getSource()==b2) {
ta.setText(str);
int sno=Integer.parseInt(t1.getText());
try {
con=d.getConnect();
PreparedStatement pst=con.prepareStatement("delete from test where Empnumber="+sno);
int i=pst.executeUpdate();
if(i>0)
l5.setText("Deletion Operation Performed");
else
l5.setText("Deletion Operation Failed");
pst.clearParameters();
t1.setText("");
t2.setText("");
t.setText("");
t3.setText("");
t4.setText("");
}catch(Exception ae){
ae.printStackTrace();
}
}//Button b2 if
if(e.getSource()==b3) {
ta.setText(str);
int sno=Integer.parseInt(t1.getText());
String sname=t2.getText();
String spwd=t.getText();
double sal=Double.parseDouble(t3.getText());
String address=t4.getText();
try {
con=d.getConnect();
//PreparedStatement pst=con.prepareStatement("update test set sname=?,spwd=?,sal=?,address=? where sno=?");
PreparedStatement pst=con.prepareStatement("update test set Empname=?,Emppassword=?,Empsal=?,Empadd=? where Empnumber=?");
pst.setString(1,sname);
pst.setString(2,spwd);
pst.setDouble(3,sal);
pst.setString(4,address);
pst.setInt(5,sno);
int i=pst.executeUpdate();
if(i>0)
l5.setText("Update Operation Performed");
else
l5.setText("Update Operation Failed");
pst.clearParameters();
t1.setText("");
t2.setText("");
t.setText("");
t3.setText("");
t4.setText("");
}catch(Exception ae){
ae.printStackTrace();
}
}//button b3 if
if(e.getSource()==b4) {
ta.setText(str);
int sno=Integer.parseInt(t1.getText());
try {
con=d.getConnect();
PreparedStatement pst=con.prepareStatement("select * from test where Empnumber="+sno);
ResultSet rs=pst.executeQuery();
if(rs.next()) {
t1.setText(""+rs.getInt(1));
t2.setText(rs.getString(2));
t.setText(rs.getString(3));
t3.setText(""+rs.getDouble(4));
t4.setText(rs.getString(5));
ta.append(t1.getText()+"\n"+t2.getText()+"\n"+t.getText()+"\n"+t3.getText()+"\n"+t4.getText());
l5.setText("Record Avilable with Serial Number : "+sno);
}
else {
l5.setText("No Record Avilable with Serial Number : "+sno);
pst.clearParameters();
t1.setText("");
t2.setText("");
t.setText("");
t3.setText("");
t4.setText("");
}
}catch(Exception ae){
ae.printStackTrace();
}
}//Button b5 if
if(e.getSource()==exit)
System.exit(0);

}
}
class Database {
public static void main(String[] args) {
D1 d=new D1();
}

}




and





package mysql;
import java.sql.*;
import java.io.*;

public class DataAcc
{
public Connection con=null;
public Connection getConnect()
{
try
{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
con=DriverManager.getConnection("jdbc:odbc:msdesktop");
System.out.println("Connected");
}
catch(Exception e)
{
System.out.println(e);
}
return con;
}//getConnection

}//class






the o/p is coming
in that o/p we type all the fields and we click "insert" it is inserted into the database and all the operations is working
my doubt is if we type the empnumber and we click "reports" the respective empnumber,name,sal,place is displayed in another frame(window).

please help me.

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View Answers

July 21, 2010 at 4:37 PM


Hi Friend,

Add the following code to the actionPerformed() method:

if(e.getSource()==b){
int sno=Integer.parseInt(t1.getText());
try {
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection con=DriverManager.getConnection("jdbc:odbc:access");
PreparedStatement pst=con.prepareStatement("select * from test where Empnumber="+sno);
ResultSet rs=pst.executeQuery();
JFrame f=new JFrame();
int n1=0,n3=0;
String n="",n2="",n4="";
JPanel p=new JPanel(new GridLayout(5,1));
if(rs.next()) {
n1=rs.getInt(1);
n2=rs.getString(2);
n=rs.getString(3);
n3=rs.getInt(4);
n4=rs.getString(5);
}
p.add(new JLabel("Emp No: "+Integer.toString(n1)));
p.add(new JLabel("Name: "+n2));
p.add(new JLabel("Password: "+n));
p.add(new JLabel("Salary: "+Integer.toString(n3))) ;
p.add(new JLabel("Address: "+n4));
f.add(p);
f.setVisible(true);
f.pack();
}catch(Exception ae){

}
}

Thanks


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