1.数组转化为List：

String[] strArray= new String[]{"Tom", "Bob", "Jane"};

List strList= Arrays.asList(strArray);

2.数组转Set

String[] strArray= new String[]{"Tom", "Bob", "Jane"};

Set<String> staffsSet = new HashSet<>(Arrays.asList(staffs));

staffsSet.add("Mary"); // ok

staffsSet.remove("Tom"); // ok

3.List转Set

String[] staffs = new String[]{"Tom", "Bob", "Jane"};

List staffsList = Arrays.asList(staffs);

Set result = new HashSet(staffsList);

4.set转List

String[] staffs = new String[]{"Tom", "Bob", "Jane"};

Set<String> staffsSet = new HashSet<>(Arrays.asList(staffs));

List<String> result = new ArrayList<>(staffsSet);

原文：https://www.cnblogs.com/h-c-g/p/10999867.html