java.sql.SQLException: [Oracle][ODBC][Ora]ORA-00904: invalid column name

[OMFGITSROHIT]

errors-
java.sql.SQLException: [Oracle][ODBC][Ora]ORA-00904: invalid column name
at sun.jdbc.odbc.JdbcOdbc.createSQLException(JdbcOdbc .java:6957)
at sun.jdbc.odbc.JdbcOdbc.standardError(JdbcOdbc.java :7114)
at sun.jdbc.odbc.JdbcOdbc.SQLExecDirect(JdbcOdbc.java :3110)
at sun.jdbc.odbc.JdbcOdbcStatement.execute(JdbcOdbcSt atement.java:338)
at sun.jdbc.odbc.JdbcOdbcStatement.executeQuery(JdbcO dbcStatement.java:253)

    private void jButton1MouseClicked(java.awt.event.MouseEvent evt) {                                      
String user= new String(jTextField1.getText());
String pass= new String(jPasswordField1.getPassword());
if(a<4)
{
Connection con = null;
String driver="sun.jdbc.odbc.JdbcOdbcDriver";
String user1 = "scott";
String pass1 = "tiger";
try{
Class.forName(driver);
con = DriverManager.getConnection("jdbc:odbc:login",user1,pass1);
Statement s=con.createStatement();
ResultSet password=s.executeQuery("Select pass from login where username="+user);
if(pass.contentEquals(password.getString(1)))
{
    a=0;
    JOptionPane.showMessageDialog(rootPane, "Access Granted");
    ResultSet access=s.executeQuery("Select access_power from login where username="+user);
    access_power=access.getString(1);
    new Exam_Season().setVisible(true);
    this.setVisible(false);
}
else
{
    JOptionPane.showMessageDialog(rootPane, "Access Denied.");
    a++;
}
}
catch(Exception e)
{
e.printStackTrace();
JOptionPane.showMessageDialog(rootPane, "Connection not successful.");
}
}
else
{
    JOptionPane.showMessageDialog(rootPane, "Too many attempts.");
    System.exit(0); 
}

    }

Help please! I've created a separate dsn using odbc sources. And I'm trying to connect using jdbc odbc bridge. Doesn't work.

[masijade]

Use PreparedStatement (see the API docs), and learn some SQL. That error is because you are not quoting (in the SQL context) the value being queried.