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how to get the filed names of sobject that we queried

hi everyone,
 I would like to get the filed values of that we queried...below i would get the schema.sobjectfileds...
i have related object fileds in my query like,account.type,account.industroy ,name,id from contact.
I would like store only above files and i wold like get the vaues respectively using schema.SobjectField 

private void discoverAccessibleFields(sObject newObj) {
32        list< Schema.SobjectField> accessibleScheama = new List< Schema.SobjectField>();
33        Map<String, Schema.SobjectField> fields =
34            newObj.getSObjectType().getDescribe().fields.getMap();
35        for ( Schema.SobjectField s : fields.values()) {
36            accessibleScheama .add(a)
38            }
39        }
40    }
SandhyaSandhya (Salesforce Developers) 

You can refer below sample code.
public static Map<String, Schema.DescribeFieldResult> getFieldMetaData(
  Schema.DescribeSObjectResult dsor, Set<String> fields) {
  // the map to be returned with the final data
  Map<String,Schema.DescribeFieldResult> finalMap = 
    new Map<String, Schema.DescribeFieldResult>();
  // map of all fields in the object
  Map<String, Schema.SObjectField> objectFields = dsor.fields.getMap();
  // iterate over the requested fields and get the describe info for each one. 
  // add it to a map with field name as key
  for(String field : fields){
    // skip fields that are not part of the object
    if (objectFields.containsKey(field)) {
      Schema.DescribeFieldResult dr = objectFields.get(field).getDescribe();
      // add the results to the map to be returned
      finalMap.put(field, dr); 
  return finalMap;
Set<String> fields = new Set<String>{'name','annualrevenue','BADFIELD'};

Map<String, Schema.DescribeFieldResult> finalMap = 
  Utils.getFieldMetaData(Account.getSObjectType().getDescribe(), fields);

// only print out the 'good' fields
for (String field : new Set<String>{'name','annualrevenue'}) {
  System.debug(finalMap.get(field).getName()); // field name
  System.debug(finalMap.get(field).getType()); // field type
  System.debug(finalMap.get(field).getLength()); // field length

Refer below link.
   Please mark it as solved if my reply was helpful. It will make it available for other as the proper solution.
Best Regards
Sitanshu TripathiSitanshu Tripathi
Madhurima Dutta 18Madhurima Dutta 18

I have a followup question to this. How do I use the sobject field to access the value from a contactMap. I have field name saved in a meta data and I want to use it in apex class. But I get the error variable does not exist. when I write this.