Map<String, SortedSet<String>> makeSetMap = new HashMap<String, SortedSet<String>>(); 
for(String key : makeSetMap.keySet()) {
    // loop through all manufacturers 
    SortedSet<String> cars = makeSetMap.get(key); 
    for (String c : cars) { 
        // loop through all cars of that key 
        System.out.println(key + " " + c); 
    } 
}

Map<String, SortedSet<String>> makeSetMap = new HashMap<String, SortedSet<String>>(); 
for(String key : makeSetMap.keySet()) { 
    // loop through all manufacturers 
    SortedSet<String> cars = makeSetMap.getValue(key); 
    for (String c : cars) { 
        // loop through all cars of that key 
        System.out.println(key + " " + c); 
    } 
}

HashMap<String, SortedSet<String>> makeSetMap = new HashMap<String, SortedSet<String>>(); 
for(String key : makeSetMap.keySet()) { 
    // loop through all manufacturers 
    SortedSet<String> cars = makeSetMap.get(key); 
    for (String c : cars) { 
        // loop through all cars of that key 
        System.out.println(key + " " + c); 
    } 
}

HashMap<String, SortedSet<String>> makeSetMap = new HashMap<String, SortedSet<String>>(); 
for(String key : makeSetMap.getKeys()) { 
    // loop through all manufacturers 
    SortedSet<String> cars = makeSetMap.get(key); 
    for (String c : cars) { 
       // loop through all cars of that key 
       System.out.println(key + " " + c); 
    } 
}