How to use the JDBC connection for SYSDBA login?

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Java

JavaSE

J2ME

Oracle

In my project I am using JDBC code for connection to Oracle database for DBA purpose. I posted the part of code which I am going to used in project. I am developing the application in Netbeans 6.9.
In my project connection will be connected to Database through mobile so it is remote connection to database.
here I got situation, by using this code I can only login as simple System user like other user. Can anybody tell me the how I change the code so that I can get SYSDBA login!
without this SYSDBA or SYSOPER role I can't use DBA's backup option.
Please Tell me some modification or any other way to solve this situation.

String driver="jdbc:oracle:thin:";
String connStr="@"+Address+":"+port+":"+SID;
public Connection Connect(String UserName,String Password){
try{
if(checkLogin(UserName, Password)){
Class.forName("oracle.jdbc.OracleDriver").newInstance();
// Load the JDBC driver
    java.sql.DriverManager.registerDriver (new oracle.jdbc.OracleDriver());
        //System.out.println(driver+UserName+"/"+Password +connStr);
        return java.sql.DriverManager.getConnection (driver+UserName+"/"+Password +connStr);
}
else
    return null;
}catch(Exception e){
            System.out.println("Error: " +e.getMessage());
            return null;
        }
}

Vishal Kolekar

Very very thank you in advance.

[Edited]Code is blocked in "pre" tag[/Edited]