StackOverflow2013

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PO
primarykey
Id
15198005
data
AcceptedAnswerId
0
AnswerCount
0
ClosedDate
CommentCount
2
CommunityOwnedDate
CreationDate
2013-03-04T09:12:26.343
FavoriteCount
0
LastActivityDate
2013-03-04T09:24:33.333
LastEditDate
2013-03-04T09:24:33.333
LastEditorUserId
451518
OwnerUserId
451518
ParentId
15197740
PostTypeId
2
Score
3
ViewCount
0
LastEditorDisplayName
text
Body
You can declare a priorities hash map: <pre><code>private static final HashMap<String,Integer> PRIORITIES = new HashMap<String, Integer>(); static{ PRIORITIES.put("A", 1); PRIORITIES.put("B", 1); PRIORITIES.put("C", 1); PRIORITIES.put("D", 1); PRIORITIES.put("E", 2); PRIORITIES.put("F", 2); PRIORITIES.put("G", 3); } </code></pre> Then implement <code>compare</code> method of your <code>Comparator</code>: <pre><code>private int getPriority(CustomClass obj) { if(obj!=null&&PRIORITIES.containsKey(obj.getType())) { priority1 = PRIORITIES.get(obj.getType()); } else { priority1 = Integer.MAX_VALUE; } } @Override public int compare(CustomClass o1, CustomClass o2) { int priority1,priority2; priority1 = getPriority(o1); priority2 = getPriority(o2); return priority1==priority2 ? 0 : (priority1<priority2 ? -1 : 1); } </code></pre> UPDATE: Cleaner approach is to define hashmap in your base class (where <code>getType</code> is declared) and to implement <code>getPriority</code> method: <pre><code>public int getPriority() { return PRIORITIES.containsKey(getType()) ? PRIORITIES.get(getType()) : Integer.MAX_VALUE; } </code></pre> Then <code>Comparator</code> is obvious: <pre><code>@Override public int compare(CustomClass o1, CustomClass o2) { int priority1,priority2; priority1 = o1==null ? Integer.MAX_VALUE : o1.getPriority(); priority2 = o2==null ? Integer.MAX_VALUE : o2.getPriority(); return priority1==priority2 ? 0 : (priority1<priority2 ? -1 : 1); } </code></pre>
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1. COI have found, your answer most usefull. Thank you for your time looking into my answer and sharing your knowledge !
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 USDatenshi
2. CO@Datenshi Thanks! Good luck!
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