所以如果我有两套:
Set<Integer> test1 = new HashSet<Integer>();
test1.add(1);
test1.add(2);
test1.add(3);
Set<Integer> test2 = new HashSet<Integer>();
test2.add(1);
test2.add(2);
test2.add(3);
test2.add(4);
test2.add(5);
有没有办法比较它们，只返回一组 4 和 5？
最佳答案
试试这个
test2.removeAll(test1);
Removes from this set all of its elements that are contained in the specified collection (optional operation). If the specified collection is also a set, this operation effectively modifies this set so that its value is the asymmetric set difference of the two sets.
关于java - 获取两组之间的差异，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/18644579/