Creating a Database Table
Database: A database is a large collection
of data or information to stored in our computer in an arranged way. It helps us
for accessing, managing and updating the data easily. In this example we are
using MySQL database, which is a RDBMS. A RDBMS (Relational Database Management
System) is a type of DBMS (Database Management System) which stores the data in
the form of tables. RDBMS is very powerful as it doesn't need to aware how the
data is related or how it is going to be extracted from the database. So, we can
view the same database in many different ways.
Table: A table is basic component of database
(DB) that has number of rows and columns. All tables are stored in a
specific database.
Here we are providing you an example with code and it's
description that helps you to create a database table by using java file. Brief description given
below:
Description of program:
Firstly in this program we are going to establish the connection with
database and creating a table with some fields. If table name already exists then
we are displaying the message "Table already exists!".
Description of code:
Statement:
It is a interface. Statement object executes the SQL statement and returns the result it produces.
createStatement():
It is a method of Connection interface. which returns Statement
object. This method will compile again and again whenever the program
runs.
CREATE TABLE table_name(field_name):
An appropriate code used for creating a table with given field name.
executeUpdate(String table):
This method also executes SQL statement that may be INSERT, UPDATE OR
DELETE
statement are used in the code. It takes string types parameters for SQL statement.
It returns int.
Here is the code of program:
import java.sql.*;
public class CreateTable{
public static void main(String[] args) {
System.out.println("Table Creation Example!");
Connection con = null;
String url = "jdbc:mysql://localhost:3306/";
String dbName = "jdbctutorial";
String driverName = "com.mysql.jdbc.Driver";
String userName = "root";
String password = "root";
try{
Class.forName(driverName).newInstance();
con = DriverManager.getConnection(url+dbName, userName, password);
try{
Statement st = con.createStatement();
String table = "CREATE TABLE Employee11(Emp_code integer, Emp_name varchar(10))";
st.executeUpdate(table);
System.out.println("Table creation process successfully!");
}
catch(SQLException s){
System.out.println("Table all ready exists!");
}
con.close();
}
catch (Exception e){
e.printStackTrace();
}
}
}
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Current Comments
7 comments so far (post your own) View All Comments Latest 10 Comments:please give solution for that
Posted by syeddiwan on Tuesday, 03.18.08 @ 16:07pm | #53175
now i've found a good tutorial on jdbc.
definitly this type of tutorial is going to be
master in java step by step.
Posted by pankaj on Saturday, 02.2.08 @ 07:25am | #46935
you lessons is very great thanks
Posted by mustafa on Tuesday, 11.13.07 @ 09:00am | #37167
Respected!
Would u like to tell me how i can create the table in MS Access, where i have to make changing in the previous example of cretating a table in mysql
regards
Posted by m masoom on Sunday, 09.23.07 @ 01:14am | #28883
<html>
<head>
<%@ page
import = "java.io.*"
import = "java.lang.*"
import = "java.sql.*"
%>
<title>
JSP Example 2
</title>
</head>
<body>
<h1>JSP Example 3</h1>
<%
String place;
Connection dbconn;
ResultSet results;
PreparedStatement sql;
try
{
Class.forName ("sun.jdbc.odbc.JdbcOdbcDriver");
try
{
int latitude,longitude,easting,northing;
boolean doneheading = false;
out.println("Suyog before connection");
dbconn = DriverManager.getConnection("jdbc:mysql::/localhost:8080/LA/employee","","");
out.println("Suyog database");
// place = request.getParameter("place");
sql = dbconn.prepareStatement("SELECT * FROM employee");
results = sql.executeQuery();
while(results.next())
{
if(! doneheading)
{
out.println("<table border=2>");
doneheading = true;
}
latitude = results.getInt("latitude");
longitude = results.getInt("longitude");
easting = results.getInt("easting");
northing = results.getInt("northing");
out.println("<tr><td>" + latitude);
out.println("<td>" + longitude);
out.println("<td>" + easting);
out.println("<td>" + northing);
}
if(doneheading)
{
out.println("</table>");
}
else
{
out.println("No matches for ");
}
}
catch (SQLException s)
{
out.println("SQL Error<br>");
}
}
catch (ClassNotFoundException err)
{
out.println("Class loading error");
}
%>
</body>
</html>
Posted by suyoh on Saturday, 09.15.07 @ 12:06pm | #27017
how can using statement and create statement
public static void main(String args[]) {
System.out.println("Table Creation Example!");
Connection con = null;
String url = "jdbc:mysql://localhost:3306/";
String dbName = "rameshdb";
String driverName = "com.mysql.jdbc.Driver";
String userName = "root";
String password = "root";
try{
Class.forName(driverName).newInstance();
con = DriverManager.getConnection(url+dbName, userName, password);
try{
Statement st = con.createStatement();
String table = "CREATE TABLE Employee11(Emp_code integer, Emp_name varchar(10))";
st.executeUpdate(table);
System.out.println("Table creation process successfully!");
} catch(SQLException s){
System.out.println("Table all ready exists!");
}
con.close();
} catch (Exception e){
e.printStackTrace();
}
Posted by ramesh on Friday, 07.27.07 @ 16:31pm | #22055
This is the best tutorial i have come through.
Posted by Thatayaone on Sunday, 03.4.07 @ 19:33pm | #10639