A partition method.

ListUtils.java

import java.util.ArrayList;
import java.util.List;

public class ListUtils {
    public static <T> List<List<T>> partition(
            List<T> list,
            int size) {
        if (list == null) { throw new NullPointerException("List must not be null.");}
        if (size <= 0) { throw new IllegalArgumentException("Size must be greater than 0.");}

        List<List<T>> result = new ArrayList<List<T>>();

        for (int start = 0 ; start < list.size();start += size) {
            int end = (start + size) < list.size() ? (start + size) : (start + (list.size() % size));
            result.add(list.subList(start, end));
        }
        return result;
    }

}