Overriding the Equals method

Phone Class Properties:

1     Private String Id; 2     Private String name;

After overriding the Equals method:

1 //overriding the Equals method2 @Override3      Public Booleanequals (Object obj) {4         //determine if the same object5         if( This==obj) {6             return true;7         }8         //determine if obj is an instance of the phone9         if(! (objinstanceofPhone)) {Ten             return false; One         } A         //Forced Conversions -Phone phone =(Phone) obj; -         //determine whether each property is equal in turn the         if(!getId (). Equals (Phone.getid ())) { -             return false; -         } -         if(!getName (). Equals (Phone.getname ())) { +             return false; -         } +         return true; A}

Test:

1         New Phone ("1234", "IPH"); 2         Phone phone2=New phone ("1234", "IPH"); 3         System.out.println (Phone.equals (phone2));

Output Result:

True

All Class Code:

1  Public classPhone {2     PrivateString Id;3     PrivateString name;4 5      PublicPhone () {6     }7 8      PublicPhone (String Id, string name) {9          This. Id =Id;Ten          This. Name =name; One     } A  -      PublicString getId () { -         returnId; the     } -  -      Public voidsetId (String id) { -Id =ID; +     } -  +      PublicString GetName () { A         returnname; at     } -  -      Public voidsetName (String name) { -          This. Name =name; -     } -  in     //overriding the Equals method - @Override to      Public Booleanequals (Object obj) { +         //determine if the same object -         if( This==obj) { the             return true; *         } $         //determine if obj is an instance of the phonePanax Notoginseng         if(! (objinstanceofPhone)) { -             return false; the         } +         //Forced Conversions APhone phone =(Phone) obj; the         //determine whether each property is equal in turn +         if(!getId (). Equals (Phone.getid ())) { -             return false; $         } $         if(!getName (). Equals (Phone.getname ())) { -             return false; -         } the         return true; -     }Wuyi}

Overriding the Equals method