Create armstrong.java

Main0.java

@@ -0,0 +1,41 @@
+import java.util.*;
+import java.util.Map.Entry;
+
+class Main0 {
+
+  public static void main(String[] args) {
+
+    // create a map and store elements to it
+    LinkedHashMap<String, String> capitals = new LinkedHashMap();
+    capitals.put("Nepal", "Kathmandu");
+    capitals.put("India", "New Delhi");
+    capitals.put("United States", "Washington");
+    capitals.put("England", "London");
+    capitals.put("Australia", "Canberra");
+
+    // call the sortMap() method to sort the map
+    Map<String, String> result = sortMap(capitals);
+
+    for (Map.Entry entry : result.entrySet()) {
+      System.out.print("Key: " + entry.getKey());
+      System.out.println(" Value: " + entry.getValue());
+    }
+  }
+
+  public static LinkedHashMap sortMap(LinkedHashMap map) {
+    List <Entry<String, String>> capitalList = new LinkedList<>(map.entrySet());
+
+    // call the sort() method of Collections
+    Collections.sort(capitalList, (l1, l2) -> l1.getValue().compareTo(l2.getValue()));
+
+    // create a new map
+    LinkedHashMap<String, String> result = new LinkedHashMap();
+
+    // get entry from list to the map
+    for (Map.Entry<String, String> entry : capitalList) {
+      result.put(entry.getKey(), entry.getValue());
+    }
+
+    return result;
+  }
+}

armstrong.java

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+public class Armstrong {
+
+    public static void main(String[] args) {
+
+        int number = 371, originalNumber, remainder, result = 0;
+
+        originalNumber = number;
+
+        while (originalNumber != 0)
+        {
+            remainder = originalNumber % 10;
+            result += Math.pow(remainder, 3);
+            originalNumber /= 10;
+        }
+
+        if(result == number)
+            System.out.println(number + " is an Armstrong number.");
+        else
+            System.out.println(number + " is not an Armstrong number.");
+    }
+}