why the order is not right (ascending)

Question

i have this android code

HashMap<String,String> url_maps = new HashMap<String, String>();
        url_maps.put("Image 1", url0);
        url_maps.put("Image 2", url45);
        url_maps.put("Image 3", url90);
        url_maps.put("Image 4", url135);
        url_maps.put("Image 5", url180);
        url_maps.put("Image 6", url225);
        url_maps.put("Image 7", url270);

but why when it's show the order is not ascending, now the show is "3,4,1,2,7,6,5"

HashMaps make no guarantee of the order, from the JavaDocs - use LinkedHashMap or TreeMap — Andrew Li, Jul 02 '16 at 16:55
http://stackoverflow.com/questions/2144776/order-of-values-retrieved-from-a-hashmap — CommonsWare, Jul 02 '16 at 16:56
See here https://stackoverflow.com/questions/683518/java-class-that-implements-map-and-keeps-insertion-order — Harry, Jul 02 '16 at 16:57

score 2 · Accepted Answer · answered Jul 02 '16 at 16:56

2

Use LinkedHashMap to preserve insertion order.

answered Jul 02 '16 at 16:56

sJy

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why the order is not right (ascending)

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