classs 


public class LeadHelper 
{
 public void createNewLeadRecord()
 {
     Lead ld = new Lead ();
     ld.FirstName = 'Test';
     ld.LastName ='Lead record';
     ld.Company = 'google';
     ld.Status = 'OPen - Not contacted';
     ld.Rating = 'HOt';
     ld.Industry = 'Banking';
     ld.AnnualRevenue = 4500000;
     ld.Phone = '6765434567';
     ld.Fax = '6776543456789';
     ld.Email = 'sample@gmail.com';
     ld.LeadSource ='web';
     ld.website = 'www.salesforce.com';
     ld.city = 'Hyderabad';
     ld.Country = 'india';
      
     insert ld;
     if(ld.id != null)
         system.debug('lead record inserted with id .....:'+ld.id);
     
         }
     
 
}


execution


LeadHelper ldHelper = new LeadHelper();

ldHelper.createtNewLeadRecord();