Basic Class Question

I'm a beginner at Java, stuck on one question...
I'm supposed write a method, named isAlpha, that accepts a character parameter and returns true if the character is an uppercase or lowercase letter. Otherwise, it returns false.
What's the proper way to write that?

1- Write a class.
2- Write the method named isAlpha with proper signature in this class.
3- In this method body, you should use something like [url http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Character.html#isLetter(char)]Character.isLetter() to do the test.
If you have any problem(s), post the code you did.
And allways paste your code between code tags exactly like this:
[code]
your code
[/code]
Regards

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                   Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver");
                   con = DriverManager.getConnection("jdbc:microsoft:sqlserver://servername:1433","userid","password");
    // ******************************Connected To Merant.
                   Class.forName("com.merant.datadirect.jdbc.sqlserver.SQLServerDriver");
                   con = DriverManager.getConnection("jdbc:merant:sqlserver://servername:1433;User=userid;Password=password");
    // ******************************Connected To Atinav SqlServer.
                   Class.forName ("net.avenir.jdbc2.Driver");
                   con= DriverManager.getConnection("jdbc: AvenirDriver://servername:1433/pubs","userid","password");
    // ******************************Connected To J-Turbo.
    /*               String server="servername";
                   String database="pubs";
                   String user="userid";
                   String password="password";
                   Class.forName("com.ashna.jturbo.driver.Driver");
                   con= DriverManager.getConnection("jdbc:JTurbo://"+server+"/"+database,user,password);
    /*// ******************************Connected To jk Jdbc Driver.
                   String url= "jdbc:jk:server@pubs:1433";
                   Properties prop = new Properties();
                   prop.put("user","userid");//Set the user name
                   prop.put("password","password");//Set the password
                   Class.forName ("com.jk.jdbc.Driver").newInstance();
                   con = DriverManager.getConnection (url, prop);*/
    // ******************************Connected To jNetDirect Type - 4 Driver
    /*               String sConnect = "jdbc:JSQLConnect://127.0.0.1/database=pubs&user=userid&password=password";
                   Class.forName ("com.jnetdirect.jsql.JSQLDriver").newInstance();     
                   Connection con= DriverManager.getConnection(sConnect);
    // ******************************Connected To AvenirDriver Type - 4 Driver
    //               String url= "jdbc: AvenirDriver: //servername:1433/pubs";
    //               java.util.Properties prop = new java.util.Properties ();
    //               prop.put("user","userid");
    //               prop.put("password","password");
    /*               Class.forName ("net.avenir.jdbc2.Driver");     
                   System.out.println(" Connected To AvenirDriver Type - 4 Driver");
                   con= DriverManager.getConnection("jdbc: AvenirDriver://servername:1433/pubs","userid","password");
    // ******************************Connected To iNet Sprinta2000 Type - 4 Driver
         /*          String url="jdbc:inetdae7:servername:1433";
                   String login="userid";
                   String password="password";
                   Class.forName("com.inet.tds.TdsDriver");
                   System.out.println(" Connected To iNet Sprinta2000 Type - 4 Driver");
                   con=DriverManager.getConnection(url,login,password);
    // ******************************Connected To iNet Opta2000 Type - 4 Driver
    /*               String url="jdbc:inetdae7:servername:1433";
                   String login="sagar";
                   String password="sagar";
                   Class.forName("com.inet.tds.TdsDriver").newInstance();
                   System.out.println(" Connected To iNet Opta2000 Type - 4 Driver");
                   con=DriverManager.getConnection(url,login,password);
                   DatabaseMetaData md = con.getMetaData();
                   System.out.println("Driver Name            " + md.getDriverName());
                   System.out.println("Driver Version         " + md.getDriverVersion());
                   System.out.println("Database URL is        " + md.getURL());
                   System.out.println("Database UserName is   " + md.getUserName());
                   System.out.println("Connection Name        " + md.getConnection());
                   System.out.println("Database Name          " + md.getDatabaseProductName());
                   System.out.println("Database Version       " + md.getDatabaseProductVersion());
                   System.out.println("Database ReadOnly Type " + md.isReadOnly());
                   System.out.println("MaxColumnNameLength    " + md.getMaxColumnNameLength());
                   System.out.println("MaxConnections         " + md.getMaxConnections());
                   System.out.println("");
              catch(ClassNotFoundException cnfe)
                   System.out.println(cnfe.getException());
                   System.out.println("The Specified Driver Does not Exist....");
              catch(SQLException sqle)
                   if(sqle.getErrorCode() == 0)
                        System.out.println("No Suitable Driver Found..");
                   else if(sqle.getErrorCode() == 1017)
                        System.out.println("Wrong UserName Or Password..");
                   else if(sqle.getErrorCode() == 1034)
                        System.out.println("Database not Started..");
                        System.out.println(sqle.getErrorCode());
                        System.out.println(sqle.getSQLState());
                        System.out.println(sqle);
         public static void main (String args[])
              new MyConnection();
    }

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