import java.util.HashMap;
import java.util.List;
import java.util.stream.Collectors;
 
public class Main {
  public static void main(String[] args) {
    HashMap<String, Integer> mMap = new HashMap<String, Integer>();
    mMap.put("CODE1", 3);
    mMap.put("CODE2", 5);
    mMap.put("CODE3", 2);
    mMap.put("CODE4", 4);
    mMap.put("CODE5", 1);
 
    List<String> keySorted = mMap.keySet().stream()
        .sorted((p1, p2) -> mMap.get(p2) - mMap.get(p1))
        .collect(Collectors.toList());
 
    System.out.println("表示：拡張for文");
    for (String key : keySorted) {
      System.out.printf("キー：%s 値：%d%n", key, mMap.get(key));
    }
 
    System.out.println();
 
    System.out.println("表示：forEach文");
    keySorted.forEach(key -> System.out.printf("キー：%s 値：%d%n", key, mMap.get(key)));
 
  }
}
 

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