sort a List of Map<String, String> based integer value

Question

I have a List<Map <String, String>> which contains data such as IP address, rx packets, rx bytes. eg

{key:address value:10.0.0.1, key:packets value:500, key:bytes value:20240}
{key:address value:10.0.0.5, key:packets value:20,  key:bytes value:260}
{key:address value:10.0.0.100, key:packets value:1000,  key:bytes value:503210}

How can i sort this List based on bytes? I want one output like this:

{10.0.0.100, 1000,  503210}
{10.0.0.1, 500, 20240}
{10.0.0.5, 20,  260}

edit: I get my data from API(mikrotik API) which returns List<Map <String, String>>

List<java.util.Map<String, String>> results = con.execute("mikrotik command");

Answer 1

To sort based on a value of a key in a Map you can do

List<Map<String, String>> listOfData =

listOfData.sort(Comparator.comparing(m -> m.get("bytes"));

In general, you should use a custom class in Java, rather than a generic collection like Map wherever you have lots of them with the same String keys

Answer 2

instead of using a map create a Custom class for the data with setters and getters.Implement comparator interface

class MyObject implements Comparator<MyObject>{
    String ip;
    int rxPackets;
    int rxbytes;
//getters and setters for each element

@Override
    public int compare(MyObject o1, MyObject o2) {
        return o1.getrxbytes.compareTo(o2.getrxbytes());
    }

Then use Collections.sort(pass List<MyObject> here);