Listing 2: The displayCollection method, rewritten with Java Generics: 
import java.util.List;
import java.util.LinkedList;
import java.util.Collection;
import java.util.Iterator;

class displayCollectionWithGenericsWithoutWildcards { 

    static void displayCollection(Collection<Object> collection) {
          for (Object obj : collection) 
            { System.out.println(obj); }
         }
   
    public static void main(String[] args) {
    
    List<Float> floatList = new LinkedList<Float>();
    floatList.add(new Float(4.5));    
    
    List<String> stringList = new LinkedList<String>();
    stringList.add(new String("string"));    
    
    displayCollection(floatList);   
    displayCollection(stringList);   
    }
}

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