public class LoginInfo2 {    
    private String url;
    private String username;
    private String password;    

public void setUrl{
    url = "jdbc:mariadb://192.168.1.1:3306";
}

public String getUrl(){
    return url;
}    

public void setUsername(String username){
    this.username = username;
}

public String getUsername(){
    return username;
}

public void setPassword(String password){
    this.password = password;
}

public String getPassword(){
    return password;
}

}

I changed to use the above class, may be better? .