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java define a generic class that produces

Sam Figueroa 

List list = new ArrayList();
list.add("abc");
list.add(new Integer(5)); //OK

for(Object obj : list){
	//type casting leading to ClassCastException at runtime
    String str=(String) obj; 
}
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Masterkomp 100 points 

                                    
List<String> list1 = new ArrayList<String>(); // java 7 ? List<String> list1 = new ArrayList<>(); 
list1.add("abc");
//list1.add(new Integer(5)); //compiler error

for(String str : list1){
     //no type casting needed, avoids ClassCastException
}

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