Trier un TreeMap avec sa valeur
Bonjour,
Je souhaite trier une TreeMap avec sa valeur de type string mais j'obtiens une erreur de compilation dans cette ligne TreeMap<Integer, String> treeMap = new TreeMap<Integer, String>(descendingEmployeeNameComparator); (ligne 11)
Merci d'avance
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import java.util.Comparator;
public class DescendingEmployeeNameComparator implements Comparator<String> {
@Override
public int compare(String empName1, String empName2) {
return empName1.compareToIgnoreCase(empName2);
}
} |
Code:
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import java.util.Comparator;
import java.util.TreeMap;
public class TreeMapExample {
public static void main(String[] args) {
Comparator<String> descendingEmployeeNameComparator = new DescendingEmployeeNameComparator();
TreeMap<Integer, String> treeMap = new TreeMap<Integer, String>(descendingEmployeeNameComparator);
treeMap.put(20, "Balu");
treeMap.put(10, "Ajay");
treeMap.put(40, "Carol");
treeMap.put(30, "Dave");
System.out.println("treeMap : " + treeMap + "\n");
Comparator<?> comparator = treeMap.comparator();
}
} |
