JDBC Connectivity in JAVA

Question

Hi Can anyone tell me the exact procedure for the JDBC Connectivity in JAVA with an example? Thanks in Advance

Aarti · Answer

@Prabhu Yes i saw the post date of thread. and at all :)

Prabhu Raja · Answer

@ Aarti i think it was too late to answer this post . Look at the Date of Thread was posted.

Aarti · Answer

Can you please let me know which type of driver you are going to use

Satyapriya Nayak · Answer

Hi shalini, These are the steps to connecting to the database 1:Loading the drivers 2:Get the connection 3:Create the statement 4:Execute the query 5:Process the resultset 6:Close the connection Creation of dsn(database source name) Start-Control panel- Administrative Tools- Data Sources (ODBC)-go to system dsn tab-click add button-select a driver for which you want to set up data source (for Oracle- Oracle in XE)-select it and click finish-give any name in data source name textbox-then click ok button. Ex:- //Display records from the database using servlet import java.io.*; import javax.servlet.*; import javax.servlet.http.*; import java.sql.*; public class display extends HttpServlet { public void doGet(HttpServletRequest req ,HttpServletResponse res)throws IOException ,ServletException { PrintWriter out = res.getWriter(); res.setContentType("text/html"); out.println(" "); try { Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); Connection con=DriverManager.getConnection("jdbc:odbc:mydsn","system","pintu"); // Here dsnname- mydsn,user id- system(for oracle 10g),password for this is pintu Statement stmt=con.createStatement(); ResultSet rs=stmt.executeQuery("select * from employee"); out.println(" "); out.println(" EmpId EmpName Salary "); while(rs.next()) { String n=rs.getString("empid"); String nm=rs.getString("empname"); int s=rs.getInt("sal"); out.println(" "+n+" "+nm+" "+s+" "); } out.println(" "); out.println(" "); con.close(); } catch(Exception e) { out.println("error"); } } } Thanks If this post helps you mark it as answer

Prabhu Raja · Answer

Hi Shalini, import java.sql.* ; class JDBCQuery { public static void main( String args[] ) { try { // Load the database driver Class.forName( "sun.jdbc.odbc.JdbcOdbcDriver" ) ; // Get a connection to the database, Here Database is DataSource Name(DSN) //Username and password is optional Connection conn = DriverManager.getConnection( "jdbc:odbc:Database",Username,Password ) ; // Print all warnings for( SQLWarning warn = conn.getWarnings(); warn != null; warn = warn.getNextWarning() ) { System.out.println( "SQL Warning:" ) ; System.out.println( "State : " + warn.getSQLState() ) ; System.out.println( "Message: " + warn.getMessage() ) ; System.out.println( "Error : " + warn.getErrorCode() ) ; } // Get a statement from the connection Statement stmt = conn.createStatement() ; // Execute the query ResultSet rs = stmt.executeQuery( "SELECT * FROM Cust" ) ; // Loop through the result set while( rs.next() ) System.out.println( rs.getString(1) ) ; // Close the result set, statement and the connection rs.close() ; stmt.close() ; conn.close() ; } catch( SQLException se ) { System.out.println( "SQL Exception:" ) ; // Loop through the SQL Exceptions while( se != null ) { System.out.println( "State : " + se.getSQLState() ) ; System.out.println( "Message: " + se.getMessage() ) ; System.out.println( "Error : " + se.getErrorCode() ) ; se = se.getNextException() ; } } catch( Exception e ) { System.out.println( e ) ; } } } Is this helps you, then click "This is Correct answer" CheckBox

Jiteendra Sampathirao · Answer

hi shalini, refer this link and find the pdf in download link

JDBC Connectivity in JAVA

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