How to Show The Required Fields in Salesforce Picklist Dynamically?

To show the require fields in Salesforce picklist you have to implement these codes in apex class.

Apex class:

public class objectController {
    public Map < String, Schema.SObjectType > schemaMap = Schema.getGlobalDescribe();
    public String selectedObject {
        get;
        set;
    }
    public String selectedField {
        get;
        set;
    }
    public string selectedField1 {
        get;
        set;
    }
    public String selectedobject1 {
        get;
        set;
    }
    Public objectController() {
        selectedObject = ‘account’;
        selectedobject1 = ’lead’;
    }
    public List < SelectOption > getObjectNames() {
        List < SelectOption > objNames = new List < SelectOption > ();
        List < String > entities = new List < String > (schemaMap.keySet());
        entities.sort();
        for (String name: entities) {
            objNames.add(new SelectOption(name, name));
        }
        return objNames;
    }
    public List < SelectOption > getObjectFields() {
        Map < String, Schema.SObjectType > schemaMap = Schema.getGlobalDescribe();
        Schema.SObjectType ObjectSchema = schemaMap.get(selectedObject);
        Map < String, Schema.SObjectField > fieldMap = ObjectSchema.getDescribe().fields.getMap();
        List < SelectOption > fieldNames = new List < SelectOption > ();
        for (String fieldName: fieldMap.keyset()) {
            Schema.SObjectField fied = fieldMap.get(fieldName);
            Schema.DescribefieldResult fres = fied.getDescribe();
            if (!fres.isNillable() && fres.Type != Schema.DisplayType.Boolean) {
                Boolean isReq = fres.isNillable();
                fieldNames.add(new SelectOption(fieldName, fieldName + ‘ * ’));
            }
            if (fres.isNillable() && fres.Type != Schema.DisplayType.Boolean) {
                Boolean isReq = fres.isNillable();
                fieldNames.add(new SelectOption(fieldName, fieldName));
            }
        }
        return fieldNames;
    }
    public list < selectoption > getfieldnames() {
        map < string, schema.SobjectType > schemakeymap = schema.getglobaldescribe();
        schema.SobjectType schemakey = schemakeymap.get(selectedobject1);
        Map < String, Schema.SObjectField > fieldMap = schemakey.getDescribe().fields.getMap();
        List < SelectOption > fieldNames = new List < SelectOption > ();
        for (string fieldname: fieldMap.keyset()) {
            fieldNames.add(new selectoption(fieldname, fieldname));
        }
        return fieldNames;
    }
}