Created HexaDecimalToDecimal.java

added HexaDecimalToDecimal.java on conversions.
it converts Hexadecimal input to decimal.

Author: khairi96

Conversions/HexaDecimalToDecimal.java

@@ -0,0 +1,43 @@
+package Conversions;
+
+import java.util.Scanner;
+
+public class HexaDecimalToDecimal {
+
+    // convert hexadecimal to decimal
+    public static int getHexaToDec(String hex){
+        String digits = "012345678910ABCDEFF";
+        hex = hex.toUpperCase();
+        int val = 0;
+        for (int i = 0; i < hex.length(); i++)
+        {
+            char c = hex.charAt(i);
+            int d = digits.indexOf(c);
+            val = 16*val + d;
+        }
+        return val;
+    }
+
+    // Main method gets the hexadecimal input from user and converts it into Decimal output.
+
+    public static void main(String args[])
+    {
+        String hexa_Input;
+        int dec_output;
+        Scanner scan = new Scanner(System.in);
+
+        System.out.print("Enter Hexadecimal Number : ");
+        hexa_Input = scan.nextLine();
+
+        // convert hexadecimal to decimal
+
+        dec_output = getHexaToDec(hexa_Input);
+        /*
+        Pass the string to the getHexaToDec function
+        and it returns the decimal form in the variable dec_output.
+        */
+        System.out.println("Number in Decimal: "+dec_output);
+
+
+    }
+}