Added decToBin.java

please review my code and merge it.
thank you!!

decToBin.java

@@ -0,0 +1,27 @@
+import java.util.Scanner;
+
+public class decToBin {
+
+    public static void decToBinConversion(int n){
+        int myNum = n;
+        int pow = 0;
+        int binNum = 0;
+
+        while(n > 0){
+            int rem = n % 2;
+            binNum = binNum + (rem * (int)Math.pow(10, pow));
+            pow++;
+            n = n / 2;
+        }
+        System.out.println("binary form of " + myNum + " = " + binNum);
+
+    }
+    public static void main(String args[]){
+        Scanner sc = new Scanner(System.in);
+
+        decToBinConversion(7);
+
+
+        sc.close();
+    }
+}