java capture,Java泛型:compareTo和“capture#1

capture,Java泛型:compareTo和“capture#1"/>

java capture,Java泛型:compareTo和“capture#1

The following gives me an error message:

下面給出一個錯誤消息:

public static List> merge(Set>> lists) {

List> result = new LinkedList>();

HashBiMap>, Integer> location = HashBiMap.create();

int totalSize;

for (List> l : lists) {

location.put(l, 0);

totalSize += l.size();

}

boolean first;

List> lowest; //the list with the lowest item to add

int index;

while (result.size() < totalSize) {

first = true;

for (List> l : lists) {

if (! l.isEmpty()) {

if (first) {

lowest = l;

}

else if (l.get(location.get(l))pareTo(lowest.get(location.get(lowest))) <= 0) { //error here

lowest = l;

}

}

}

index = location.get(lowest);

r