Java TreeMap(Comparator <? super K > comparator) Constructor
Syntax
TreeMap(Comparator <? super K > comparator) constructor from TreeMap has the following syntax.
public TreeMap(Comparator <? super K> comparator)
Example
In the following code shows how to use TreeMap.TreeMap(Comparator <? super K > comparator) constructor.
import java.util.Collections;
import java.util.TreeMap;
/*from w w w. j a v a 2s . com*/
public class Main {
public static void main(String[] args) {
TreeMap<Integer, String> db = new TreeMap<Integer, String>(Collections.reverseOrder());
db.put(1000, "1000");
db.put(1011, "1011");
db.put(1102, "1102");
db.put(2023, "2023");
db.put(2034, "2034");
System.out.println(db);
}
}
The code above generates the following result.
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