verify the code and give me the code with out errors

verify the code and give me the code with out errors

import java.awt.*;
import java.awt.event.*;
import javax.swing.border.Border;
import javax.swing.BorderFactory;
import javax.swing.*;
import java.awt.Dimension;
import javax.swing.JLabel;
import javax.swing.JComponent; 
import java.awt.Graphics;
import java.sql.*;
import javax.swing.JFrame;
import javax.swing.JPanel;
import java.util.Date;
public class add 
{
String msg;
JFrame f;
JPanel p;
JTextField l=new JTextField();

JLabel l1=new JLabel("REG.NO");
JTextField t=new JTextField(6);

JLabel l2=new JLabel("NAME");
JTextField t1=new JTextField(15);

JLabel l3=new JLabel("COLLEGE NAME");
JTextField t2=new JTextField(35);

JLabel l4=new JLabel("CONTACT NO");
JTextField t3=new JTextField(11);

JLabel l5=new JLabel("EMAIL-ID  ");
JTextField t4=new JTextField(20);

JLabel l6=new JLabel("PROJECT IN");
String project[]={"NETWORK","EMBEDDED","VLSI","HARDWARE","VB.NET","JAVA","ASP.NET","ECE"};

JLabel l7=new JLabel("COURSE");
String course[]={"EMBEDDED SYSTEM","VLSI DESIGN","PLC","PCB 

DESIGN","C/C++","JAVA","J2EE","VB.NET","ASP.NET","PHP","NETWORKING","WIRELESS"};

JLabel l8=new JLabel("PROJECT TITLE");
JTextArea title=new JTextArea(3,60);

JLabel l9=new JLabel("AMOUNT");
JTextField t5=new JTextField(7);
JLabel l10=new JLabel("PAID");
JTextField t6=new JTextField(7);

JLabel l11=new JLabel("BALANCE");
JTextField t7=new JTextField(7);

JLabel l12=new JLabel("ADDRESS");
JTextArea address=new JTextArea(4,40);

JButton save=new JButton("SAVE");
JButton clear=new JButton("CLEAR");
JButton print=new JButton("PRINT");


JComboBox c4=new JComboBox(project);
JComboBox c5=new JComboBox(course);

public add()
{
f=new JFrame("ADD NEW STUDENT");
p=new JPanel();
p.setLayout(new GridLayout(0, 3));
l.setText("DATE:"+""+new Date().toString());
l.setForeground(Color.RED);
Border border=BorderFactory.createLineBorder(Color.BLUE,3);
l.setBorder(border);
p.add(l);
p.add(l1);
p.add(t);

p.add(l2);
p.add(t1);
p.add(l3);
p.add(t2);
p.add(l4);
p.add(t3);
p.add(l5);
p.add(t4);
p.add(l6);
p.add(c4);
p.add(l7);

p.add(c5);
p.add(l8);
p.add(title);
p.add(l9);
p.add(t5);
p.add(l10);
p.add(t6);
p.add(l11);
p.add(t7);
p.add(l12);
p.add(address);

p.add(save);
p.add(clear);
p.add(print);

clear.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent ae)
{
t.setText("");
t1.setText("");
t2.setText("");
t3.setText("");
t4.setText("");
t5.setText("");
t6.setText("");
t7.setText("");
address.setText("");
title.setText("");
}
});
save.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
try
{
String date=l.getText();
double regno=Double.parseDouble(t.getText());
String name=t1.getText();
String college=t2.getText();
double contactno=Double.parseDouble(t3.getText());
String email=t4.getText();
String project=c4.getSelectedItem().toString();
String course=c5.getSelectedItem().toString();
String Title=title.getText();
double amount=Double.parseDouble(t5.getText());
double paid=Double.parseDouble(t6.getText());
double balance=Double.parseDouble(t7.getText());
String Address=address.getText();
Connection con=null;

Statement st=con.createStatement();
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
con=DriverManager.getConnection("jdbc:odbc:student");
int query=st.executeUpdate("INSERT INTO student" 

+"(date,regno,name,college,contactno,email,Project,course,Title,amount,paid,balance,Address)"+"VALUES(?,?,?,?,?,?

,?,?,?,?,?,?,?)");

JOptionPane.showMessageDialog(null, "Succesfully 

Saved.","Information",JOptionPane.INFORMATION_MESSAGE);
}
catch(Exception eex)
{
eex.printStackTrace();
}
}
});

f.add(p, BorderLayout.CENTER);
f.add(p);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  f.setSize(800,800);

 f.setVisible(true);

}

public static void main(String[] args)
{
add a=new add();
}
}

when i run this program... it shows the given below errors.pls clear the errors and give me correct tutorial for my knowledge improving.pls anyone help me.

E:\>java add
java.lang.NullPointerException
    at add$2.actionPerformed(add.java:143)
    at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1
95)
    at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.ja
a:2318)
    at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonMode
.java:387)
    at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:24
)
    at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButton
istener.java:236)
    at java.awt.Component.processMouseEvent(Component.java:6263)
    at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
    at java.awt.Component.processEvent(Component.java:6028)
    at java.awt.Container.processEvent(Container.java:2041)
    at java.awt.Component.dispatchEventImpl(Component.java:4630)
    at java.awt.Container.dispatchEventImpl(Container.java:2099)
    at java.awt.Component.dispatchEvent(Component.java:4460)
    at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:457
)
    at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4238

    at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4168)
    at java.awt.Container.dispatchEventImpl(Container.java:2085)
    at java.awt.Window.dispatchEventImpl(Window.java:2478)
    at java.awt.Component.dispatchEvent(Component.java:4460)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThr
ad.java:269)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread
java:184)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThr
ad.java:174)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169

    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161

    at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
View Answers

Ads









Related Tutorials/Questions & Answers:
verify the code and give me the code with out errors
verify the code and give me the code with out errors   import... clear the errors and give me correct tutorial for my knowledge improving.pls anyone help me. E:\>java add java.lang.NullPointerException at add
Plz give me code for this question
Plz give me code for this question  Program to find depth of the file in a directory and list all files those are having more number of parent directories
Advertisements
Give me the source code for this problem
Give me the source code for this problem  Ram likes skiing a lot. That's not very surprising, since skiing is really great. The problem with skiing is one have to slide downwards to gain speed. Also when reached the bottom most
ModuleNotFoundError: No module named 'give_me_code'
ModuleNotFoundError: No module named 'give_me_code'  Hi, My Python... 'give_me_code' How to remove the ModuleNotFoundError: No module named 'give_me_code' error? Thanks   Hi, In your python
how to send email please give me details with code in jsp,servlet
how to send email please give me details with code in jsp,servlet  how to send email please give me details with code in jsp,servlet
give me source code of webpage creation using html
give me source code of webpage creation using html  how to create a webpage using html
huffman code give the explanation for this code
huffman code give the explanation for this code  package bitcompress...); } value = 0; bit_count = 0; } } else { int code; bit_array[bit_count++] = bit; if ((code = huffcode_find (bit_array
huffman code give the explanation for this code
huffman code give the explanation for this code  package bitcompress...); } value = 0; bit_count = 0; } } else { int code; bit_array[bit_count++] = bit; if ((code = huffcode_find (bit_array
give the code for this ques///
give the code for this ques///  write a program in java in which there is a clss readline. the functionality of this class is to read a string from... the following code: import java.util.*; class ReadLine{ public static String
I need help on my Java code.... please please help me out!?
I need help on my Java code.... please please help me out!?  Well my code is supposed to ask for an input file and then (ex: input.txt), read... in the file. Also it should be displayed on the screen. However my code doesn't display
Java Swing code for zoom in and out
Java Swing code for zoom in and out  hi.......... I require a code in java swing for image zoom in and zoom out can u tell me how it can be done or what is the code plz help
Commenting out your code - Java Tutorials
errors But the given below code compile : public class Sample2...Commenting Erroneous Code & Unicode newline Correct In this section, you will find an interesting  problem related to commenting erroneous code
code to alert when no checkbox is selected and verify them with orther set
code to alert when no checkbox is selected and verify them with orther set ... in database Thanks a lot in advance guys Please help me out guys please.. i...".. Now i need a code to throw alert whenc there is no check box selected under
code
code  please provide code for custom tags.by using currdate tag we need to get current date?please give me code
code
and give him Rs 300/- as education allowance for each children. Write a single line of code to print the amount he should be paid as allowance
<errors><error><domain>yt:quota</domain><code>too_many_recent_calls</code></error></errors>
;/code></error></errors> Tell me how to resolve the issue
ModuleNotFoundError: No module named 'commented-out-code'
ModuleNotFoundError: No module named 'commented-out-code'  Hi, My... named 'commented-out-code' How to remove the ModuleNotFoundError: No module named 'commented-out-code' error? Thanks   Hi, In your
ModuleNotFoundError: No module named 'commented-out-code'
ModuleNotFoundError: No module named 'commented-out-code'  Hi, My... named 'commented-out-code' How to remove the ModuleNotFoundError: No module named 'commented-out-code' error? Thanks   Hi, In your
ModuleNotFoundError: No module named 'commented-out-code'
ModuleNotFoundError: No module named 'commented-out-code'  Hi, My... named 'commented-out-code' How to remove the ModuleNotFoundError: No module named 'commented-out-code' error? Thanks   Hi, In your
can any one give the frogort password code using jsp,
can any one give the frogort password code using jsp,  plz give the code for frogot password
Please help me to modify my java code from php code
]; } } I tried like this (see below JSP code) ... but this is not giving me the exact result as the above PHP code is giving. So please help me to convert...Modify Java code from PHP Code  i want to covert this php code int
Code
Code  code for connecting c lang to database
code
code    how to write this in java
code
code  code for android sample program
code
code   hi I need help in creating a java code that reminds user on a particular date about their festival. i have no clue of how to do it.. am looking forward to seek help from you
code
the correct code for a program.The output of the program is listed below...: {Block 5} ADDRESS-3: {San Juan} POST CODE:{6745} ENTER CODE (XX TO stop) CODE:{FF1} QUANTITY:{2} CODE:{TR4} QUANTITY:{1} CODE:XX INVOICE FOR YOUR ORDER Harry
code
code to create the RMI client on the local machine: import java.rmi.*; public... : "+e); } } } However, when the preceding code is executed it results... the correct code
code
code  i have four textboxes.whenever i click on up,down,left or down arrows then the cursor move to another textbox based on the key pressed.i want code for this in javascript
plzz tell me java code for that diamond
plzz tell me java code for that diamond   1 131 13531 1357531 13531 131 1
Please help me to modify my java code from php code
Please help me to modify my java code from php code  i want to covert this php code int java/JSP . if (isset($_POST['orders'])) { $orders...) ... but this is not giving me the exact result as the above PHP code is giving. So please
I didn't gat an output for this code, plz send me a correct code
I didn't gat an output for this code, plz send me a correct code  Hi, Here is my code: import java.awt.event.*; import java.awt.event.KeyAdapter; import java.awt.event.KeyEvent; import javax.swing.*; import java.sql.*; public

Ads