chore(Java) : add nearly lucky number

algorithms/Java/Maths/nearlyLuckyNumberCF.java

@@ -0,0 +1,18 @@
+import java.util.*;
+public class nearlyLuckyNumberCF {
+    public static void main(String args[]){
+        Scanner in = new Scanner(System.in);
+        long n = in.nextLong();
+        int count = 0;
+        while(n > 0){
+            if(n % 10 == 4 || n % 10 == 7){
+            count++;
+            }
+            n = n/10;
+        }
+        if(count == 7 || count == 4)
+        System.out.print("YES");
+        else
+        System.out.print("NO");
+    }
+}