Re: How to sort these Strings?
On Aug 7, 9:41 am, RedGrittyBrick <RedGrittyBr...@SpamWeary.foo>
wrote:
www wrote:
Hi,
I have a TreeMap:
final TreeMap<String, String> treeMap = new TreeMap<S=
tring,
String>(getMap());
final Set<Map.Entry<String, String>> mySet = treeMap.=
entrySet();
for (final Map.Entry<String, String> curEntry : mySet)
{
resultStr.append(curEntry.getKey() + "=" +
curEntry.getValue() + LINE_END);
}
It prints out in an order based on the key(String) alphabetic order,
which is what I want. The only problem is that sometimes, the keys are:
STATE_0, STATE_1, .. , STATE_10, ..., STATE_20
Now, they are not printed out the order I want. How can I make it print
out the order:
STATE_0
STATE_1
...
STATE_10
..
Thank you very much.
Create a suitable comparator (e.g. using String#split) and pass it to
the TreeSet constructor.
<http://java.sun.com/j2se/1.5.0/docs/api/java/util/TreeMap.html#TreeMa...=
)>
(orhttp://preview.tinyurl.com/3xtsqcorhttp://tinyurl.com/3xtsqc)
I recall a similar question recently. If you use Google to search
Groups for TreeMap, in the last month in comp.lang.java.programmer
you'll find discussion and examples of this.
And careful perusal of the Javadocs for TreeMap would also have
helped, were one to have tried it.
--
Lew
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