java

java

Hi friends yesterday i asked you this...How do i write a program that has maybe 5 labels and 5 textboxes for student details, name, surname, id no., address, cell no., student no.. Then when the user inputs data it is stored in the database. Access or excell. Your answer really helped, but i need the program to write to a file or directory. I have an example of your code mixed with mine and it does not work. Pls help, im begging you friends. Here is the example code:

package studentDetailsDatabase;

import java.awt.*;
import java.sql.*;
import javax.swing.*;
import java.awt.event.*;
import java.io.File;
import java.io.PrintWriter;

class FormDemo extends JFrame {
public static File dir;
public static File fileName;

JButton ADD;
JPanel panel;
JFrame f;

FormDemo(){
JLabel label1,label2,label3,label4,label5;
final JTextField text1,text2,text3,text4,text5;
label1 = new JLabel("Student ID:");
text1 = new JTextField(20);

label2 = new JLabel("First Name:");
text2 = new JTextField(20);

label3 = new JLabel("Last Name:");
text3= new JTextField(20);

label4 = new JLabel("Address:");
text4 = new JTextField(20);

label5= new JLabel("Contact No:");
text5= new JTextField(20);

ADD=new JButton("Enter");
ADD.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
String v1=text1.getText();
String v2=text2.getText();
String v3=text3.getText();
String v4=text4.getText();
String v5=text5.getText();
int ide=Integer.parseInt(v1);
int no=Integer.parseInt(v5);

try{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection connect =DriverManager.getConnection("jdbc:odbc:access","","");
Statement st=connect.createStatement();
int i=st.executeUpdate("insert into Student(id,FirstName,LastName,Address,ContactNo) values("+ide+",'"+v2+"','"+v3+"','"+v4+"',"+v5+")");
JOptionPane.showMessageDialog(null,"Inserted Successfully");
}
catch(Exception ex){
System.out.println(ex);
JOptionPane.showMessageDialog(null,"Error");
}

}
});
f=new JFrame();
panel=new JPanel(new GridLayout(6,2));
panel.add(label1);
panel.add(text1);
panel.add(label2);
panel.add(text2);
panel.add(label3);
panel.add(text3);
panel.add(label4);
panel.add(text4);
panel.add(label5);
panel.add(text5);
panel.add(ADD);
f.add(panel,BorderLayout.CENTER);
f.setTitle("STUDENT DETAILS");
f.setVisible(true);
f.pack();
}
public static void main(String[]args){
FormDemo ff=new FormDemo();
StringBuffer sb = new StringBuffer();
String detailLine1, detailLine2;
PrintWriter pw;

try {
//2. Point to the directory where the file is located
File dir = new File("dir");
System.out.println(dir.isDirectory());

//3. Point to the file
File fileName = new File(dir,"StudentDetails.csv");
System.out.println(fileName.isFile());

text1 = ("");
text2 = ("");

sb.append("Student List for the year ");
sb.append("\n\n\n");
sb.append(text1);
sb.append("\n");
sb.append(detailLine2);
sb.append("text2");


pw = new PrintWriter(fileName);
pw.write(sb.toString());

//8. Ensure that the last data is written and close the PrintWriter
pw.flush();
pw.close();

} catch (Exception e) {
System.out.println("*******THE ERROR THAT WE GET "+ e.getMessage());
e.printStackTrace();
}
}
}

Thank you for responding.
View Answers

September 28, 2010 at 10:56 AM

Hi Friend,

Try the following code:

import java.io.*;
import java.awt.*;
import java.sql.*;
import javax.swing.*;
import java.awt.event.*;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFCell;

class FormDemo extends JFrame {
HSSFWorkbook wb;
HSSFSheet sheet;
JButton ADD;
JPanel panel;
JFrame f;

FormDemo(){
JLabel label1,label2,label3,label4,label5;
final JTextField text1,text2,text3,text4,text5;
label1 = new JLabel("Student ID:");
text1 = new JTextField(20);

label2 = new JLabel("First Name:");
text2 = new JTextField(20);

label3 = new JLabel("Last Name:");
text3= new JTextField(20);

label4 = new JLabel("Address:");
text4 = new JTextField(20);

label5= new JLabel("Contact No:");
text5= new JTextField(20);
wb = new HSSFWorkbook();
sheet = wb.createSheet("Excel Sheet");
HSSFRow rowhead = sheet.createRow((short)0);
rowhead.createCell((short) 0).setCellValue("ID");
rowhead.createCell((short) 1).setCellValue("First Name");
rowhead.createCell((short) 2).setCellValue("Last Name");
rowhead.createCell((short) 3).setCellValue("Address");
rowhead.createCell((short) 4).setCellValue("Contact No");

ADD=new JButton("Enter");
ADD.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
String v1=text1.getText();
String v2=text2.getText();
String v3=text3.getText();
String v4=text4.getText();
String v5=text5.getText();
int ide=Integer.parseInt(v1);
int no=Integer.parseInt(v5);

September 28, 2010 at 10:57 AM

continue..

try{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection connect =DriverManager.getConnection("jdbc:odbc:access","","");
Statement st=connect.createStatement();
int i=st.executeUpdate("insert into Student(id,FirstName,LastName,Address,ContactNo) values("+ide+",'"+v2+"','"+v3+"','"+v4+"',"+v5+")");
JOptionPane.showMessageDialog(null,"Inserted Successfully");

ResultSet rs=st.executeQuery("select * from student");
int index=1;
while(rs.next()){
HSSFRow row = sheet.createRow((short)index);
row.createCell((short)0).setCellValue(rs.getInt(1));
row.createCell((short)1).setCellValue(rs.getString(2));
row.createCell((short)2).setCellValue(rs.getString(3));
row.createCell((short)3).setCellValue(rs.getString(4));
row.createCell((short)4).setCellValue(rs.getInt(5));
index++;
}
FileOutputStream fileOut = new FileOutputStream("c:/student.xls");
wb.write(fileOut);
fileOut.close();
}
catch(Exception ex){
System.out.println(ex);
JOptionPane.showMessageDialog(null,"Error");
}
}
});
f=new JFrame();
panel=new JPanel(new GridLayout(6,2));
panel.add(label1);
panel.add(text1);
panel.add(label2);
panel.add(text2);
panel.add(label3);
panel.add(text3);
panel.add(label4);
panel.add(text4);
panel.add(label5);
panel.add(text5);
panel.add(ADD);
f.add(panel,BorderLayout.CENTER);
f.setTitle("STUDENT DETAILS");
f.setVisible(true);
f.pack();
}
public static void main(String[]args){
FormDemo ff=new FormDemo();
}
}

Thanks









Related Tutorials/Questions & Answers:
java
java  diff bt core java and java
java
java  what is java
Advertisements
java
java   why iterator in java if we for loop
Java
Java   Whether Java is pure object oriented Language
JAVA
JAVA  how the name came for java language as "JAVA
java
java  explain technologies are used in java now days and structure java
java
java  different between java & core java
java
java  is java open source
java
java  what is java reflection
java
java   in java does not pointers concept but what is nullpointers in java?   nullpointer is a runtime Exception
java
what is the size of array in java ?  what is the size of array in java ? what is the mean of finalize in java
java
java  why to set classpath in java
java
java  RARP implementation using java socket
java
java  sample code for RARP using java
Java
Java  how to do java in command prompt
java
java  how use java method
java
java  is java purely object oriented language
java
java  why multiple inheritance is not possible in java
java
java  give a simple example for inheritance in java
java
java  give a simple example for inheritance in java
java
java  why to set classpath in java
java
java  why to set classpath in java
java
java  why to set classpath in java
java
java   What is ?static? keyword
java
java  Does java allows multiline comments
java
java  Write a java code to print "ABABBABCABABBA
java
java  write a program in java to acess the email
java
java  send me java interview questions
java
java  what are JAVA applications development tools
Java
Java   Whether Java is Programming Language or it is SOftware
java
java  explain object oriented concept in java
java
java   difference between class and interface
Java
Java  how to draw class diagrams in java
java
java  write a java program using filenotfoundexception
java
java  how to edit text document by using java then how to edit starting and ending of text document by using java
java
java  different between java & core java print("code sample
java
java  how can use sleep in java   which book learn of java language
java
java  hi im new to java plz suggest me how to master java[email protected]
java
java   How to set java Policy for applet using jdk 6
java
java pattern code for a given words  java pattern code for a given words pattern
java
java  dear, i want a field for date picker using java/java script
java
java  create java program for delete and update the details,without using database, just a normal java program
java
java  why methods in java raise exceptions   Have a look at the following link: Java Exceptions
java
java code to search the nodes  how to write the java code to search the nodes using routers
java
java online telephone directory  i need coding for online telephone directory..by using java....pls help me
java
java  different between java & core java print("code sample
java
java  how to invoke one chart java file from another java file
java
java  how to prepare the java   Hi Friend, If you want to learn how to install java, creating and running a java program then go through the following links: http://www.roseindia.net/java/beginners/index.shtml http
java
java  java swing   Swing is a principal GUI toolkit for the Java programming language. It is a part of the JFC (Java Foundation Classes), which is an API for providing a graphical user interface for Java programs
java
java  what is the need of java if java is not there what will happen... work unless you have Java installed, and more are created every day. Java... to scientific supercomputers, cell phones to the Internet, Java is everywhere! http

Ads