Java TreeMap(Map <? extends K ,? extends V > m) Constructor
Syntax
TreeMap(Map <? extends K ,? extends V > m) constructor from TreeMap has the following syntax.
public TreeMap(Map <? extends K ,? extends V> m)
Example
In the following code shows how to use TreeMap.TreeMap(Map <? extends K ,? extends V > m) constructor.
/*from ww w . j av a 2 s . co m*/
import java.util.HashMap;
import java.util.Map;
import java.util.TreeMap;
public class Main {
public static void main(String[] args) {
Map<Integer, String> db = new HashMap<Integer, String>();
db.put(1000, "1000");
db.put(1011, "1011");
db.put(1102, "1102");
db.put(2023, "2023");
db.put(2034, "2034");
TreeMap<Integer, String> db2 = new TreeMap<Integer, String>(db);
System.out.println(db2);
}
}
The code above generates the following result.
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