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Thread: I am trying to connect my java application with SQL Server 2008 but I get error msgs

  1. #1
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    Default I am trying to connect my java application with SQL Server 2008 but I get error msgs

    //STEP 1. Import required packages

    import java.sql.*;


    public class JDBCCreateTable {

    // JDBC driver name and database URL
    // Database is called Student

    static final String JDBC_DRIVER = "com.SQLEXPRESS.jdbc.Driver";
    static final String DB_URL = "jdbc:SQLSERVER://SQLEXPRESS/Student";


    // Database credentials

    static final String USER = "sa";
    static final String PASS = "sasa";

    public static void main(String[] args) {
    Connection conn = null;
    Statement stmt = null;

    try{

    //STEP 2: Register JDBC driver

    Class.forName("com.SQLEXPRESS.jdbc.Driver");

    //STEP 3: Open a connection

    System.out.println("Connecting to database...");
    conn = DriverManager.getConnection(DB_URL,USER,PASS);


    //STEP 4: Execute a query

    System.out.println("Creating statement...");
    stmt = conn.createStatement();
    String sql;
    sql = "SELECT StudentID, StudentName, StudentAddress, PhoneNumber FROM StudentName";
    ResultSet rs = stmt.executeQuery(sql);

    //STEP 5: Extract data from result set

    while(rs.next()){

    //Retrieve by column name

    int id = rs.getInt("StudentID");
    int age = rs.getInt("StudentName");
    String first = rs.getString("StudentAddress");
    String last = rs.getString("PhoneNumber");

    //Display values

    System.out.print("StudentID: " + id);
    System.out.print("StudentName: " + age);
    System.out.print("StudentAddress: " + first);
    System.out.println("PhoneNumber: " + last);
    }


    //STEP 6: Clean-up environment

    rs.close();
    stmt.close();
    conn.close();
    }catch(SQLException se){

    //Handle errors for JDBC

    se.printStackTrace();
    }catch(Exception e){

    //Handle errors for Class.forName

    e.printStackTrace();
    }finally{

    //finally block used to close resources

    try{
    if(stmt!=null)
    stmt.close();

    }catch(SQLException se2){
    }

    // nothing we can do

    try{
    if(conn!=null)
    conn.close();
    }catch(SQLException se){
    se.printStackTrace();
    }
    //end finally try
    }

    //end try

    System.out.println("Goodbye!");
    }
    //end main

    }

    //end FirstExample
    Last edited by nadirkhan; November 19th, 2011 at 02:00 PM.


  2. #2
    Super Moderator copeg's Avatar
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    Default Re: I am trying to connect my java application with SQL Server 2008 but I get error m

    Error message? Where? What?

  3. #3
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    Default Re: I am trying to connect my java application with SQL Server 2008 but I get error m

    Here are the error messages that I get when I compile this code.

    at java.lang.ClassLoader.loadClass(Unknown Source)
    at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Unknown Source)
    at JDBCCreateTable.main(JDBCCreateTable.java:27)

  4. #4
    Super Moderator copeg's Avatar
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    Default Re: I am trying to connect my java application with SQL Server 2008 but I get error m

    That is not the full exception...that being said I presume it is a ClassNotFound exception, which means I recommend reading the following:
    Common Java Mistakes

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    Default Re: I am trying to connect my java application with SQL Server 2008 but I get error m

    There should be a jar that contains the Driver class needed to make the connection to the DB. That should fix the ClassNotFoundException.


    All intelligent thoughts have already been thought;
    what is necessary is only to try to think them again.



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    Default Re: I am trying to connect my java application with SQL Server 2008 but I get error m

    Now I get the following exception though I have downloaded the jar file from the microsoft site and saved it in the build path for eclipse.

    java.sql.SQLException: No suitable driver found for jdbc:microsoft:SQLSERVER://SQLEXPRESS:Student
    at java.sql.DriverManager.getConnection(Unknown Source)
    at java.sql.DriverManager.getConnection(Unknown Source)
    at JDBCCreateTable.main(JDBCCreateTable.java:32)

  7. #7

    Default Re: I am trying to connect my java application with SQL Server 2008 but I get error msgs

    The database URL is invalid so JDBC couldn't find an appropriate driver:

    jdbc:microsoft:SQLSERVER://SQLEXPRESS:Student

    It should be:

    jdbc:sqlserver://localhost\sqlexpress;databaseName=Student
    Last edited by copeg; December 28th, 2012 at 09:48 AM. Reason: link removed

  8. #8
    Super Moderator copeg's Avatar
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    Default Re: I am trying to connect my java application with SQL Server 2008 but I get error msgs

    Quote Originally Posted by nambill View Post
    The database URL is invalid so JDBC couldn't find an appropriate driver:
    Please don't resurrect posts over a year old, especially with the intent of providing links back to (what I presume is) your webpage for self promotion

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