JSONArray内元素排序

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本文介绍如何使用Java对JSONArray进行排序，重点讲解了三种方法：重写Comparator、使用Lambda表达式和Comparator.comparing方法，旨在帮助读者理解并掌握不同场景下的排序技巧。

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现在有一组JSONArray数据，我想以其中一种元素来排序(我这里这个元素是int)，这在实际工作中还是经常遇到的，主要是通过重写Comparator。
数据

[{"repayTerm":"3","test":"2018-12-09"},
{"repayTerm":"1","test":"2018-12-19"},
{"repayTerm":"2","test":"2018-12-13"}]

第一版

jta.sort(new Comparator<Object>() {
            @Override
            public int compare(Object o1, Object o2) {
                return ((JSONObject)o1).getIntValue("repayTerm")-((JSONObject)o2).getIntValue("repayTerm");
            }
        });

befor:
[{"repayTerm":"3","test":"2018-12-09"},
{"repayTerm":"1","test":"2018-12-19"},
{"repayTerm":"2","test":"2018-12-13"}]
after:
[{"repayTerm":"1","test":"2018-12-19"},
{"repayTerm":"2","test":"2018-12-13"},
{"repayTerm":"3","test":"2018-12-09"}]

第二版

        jta.sort(((a,b)->((JSONObject)a).getIntValue("repayTerm")-((JSONObject)b).getIntValue("repayTerm")));

befor:
[{"repayTerm":"3","test":"2018-12-09"},
{"repayTerm":"1","test":"2018-12-19"},
{"repayTerm":"2","test":"2018-12-13"}]
after:
[{"repayTerm":"1","test":"2018-12-19"},
{"repayTerm":"2","test":"2018-12-13"},
{"repayTerm":"3","test":"2018-12-09"}]

第三版

        jta.sort(Comparator.comparing(ele -> ((JSONObject) ele).getIntValue("repayTerm")));

befor:
[{"repayTerm":"3","test":"2018-12-09"},
{"repayTerm":"1","test":"2018-12-19"},
{"repayTerm":"2","test":"2018-12-13"}]
after:
[{"repayTerm":"1","test":"2018-12-19"},
{"repayTerm":"2","test":"2018-12-13"},
{"repayTerm":"3","test":"2018-12-09"}]