Passing student Object as Parameter in Java Example

 class student 
              { 
                   int roll,hindi,eng; 
                   String nme; 
                   void setdata(int p, String q, int r, int s) 
                     { 
                        roll=p; 
                        nme=q; 
                        hindi=r; 
                        eng=s; 
                     } 
                        void showdata() 
                            { 
                                System.out.println("Roll number :"+roll); 
                                System.out.println("Students name :"+nme); 
                                System.out.println("English marks :"+eng); 
                            } 
              }; 
                   class totobject 
                    { 
                        public static void main(String args[]) 
                      { 
                               student k= new student(); 
                               k.setdata(101,"Ravinder Chalana",65,80); 
                               k.showdata(); 
                               total(k); 
                          } 
                              static void total(student m) 
                                    { 
                                        int tot; 
                                        tot=m.hindi+m.eng; 
                                        System.out.println("Total marks area:"+tot); 
                                    } 
                   }