Java question

We have the following java code:

public class MyObj{  
        public String att1;  642-374

        public Integer att2;  
        public Date att3;  
    }  

public Map<MyObj, Integer> test(){  
    Map<MyObj, Integer> map = new HashMap<MyKey, Integer>();  

    List<MyObj> myObjList = service.getMyObjList();  

    for (MyObj obj : myObjList){  
        map.put(obj, obj.att2);  
    }  

    return map;  
}

Java question: Make changes to test() method so the resulting Map is sorted by it keys. The keys must be sorted by their att1 value.http://www.lead4pass.com

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