Getting All fields from an object using dynamic apex

Here in the following snippet

Schema.getGlobalDescribe() returns the map with all sobject types in our org

By using this we can get Sobject type based on api name of object as in second line of snippet.

After getting the sobject type we can get the all the describe result of that object using "getDescribe()" method as in the third line of snippet.

Then we can get all field from that object by using "fields.getMap" as in the the

fourth line of snippet.

Map<String, Schema.SObjectType> m  = Schema.getGlobalDescribe() ;
Schema.SObjectType s = m.get('API_Name_Of_SObject') ;
Schema.DescribeSObjectResult r = s.getDescribe() ;
Map<String,Schema.SObjectField> fields = r.fields.getMap() ;