1 files changed, 25 insertions, 4 deletions
diff --git a/src/Q3/CreditCard.java b/src/Q3/CreditCard.java
index a71b0fa..e82eb6c 100644
--- a/src/Q3/CreditCard.java
+++ b/src/Q3/CreditCard.java
@@ -9,7 +9,25 @@ public class CreditCard {
   private String ccNumber;
   private String company;
 
-  public CreditCard(String num) {}
+  public CreditCard(String num) {
+    this.ccNumber = num;
+    if (validateCompany()) {
+      switch (num.charAt(0)) {
+        case '3':
+          this.company = "American Express";
+          break;
+        case '4':
+          this.company = "Visa";
+          break;
+        case '5':
+          this.company = "MasterCard";
+          break;
+        case '6':
+          this.company = "Discover";
+          break;
+      }
+    }
+  }
 
   public int getEvenSum() {
     return evenSum;
@@ -31,16 +49,19 @@ public class CreditCard {
     return this.company;
   }
 
-  public boolean isDivisibleBy10() {
+  public boolean isValid() {
     return false;
   }
 
-  public boolean isValid() {
+  public boolean isDivisibleBy10() {
     return false;
   }
 
   public boolean validateCompany() {
-    return false;
+    return this.ccNumber.startsWith("4")
+        || this.ccNumber.startsWith("5")
+        || this.ccNumber.startsWith("37")
+        || this.ccNumber.startsWith("6");
   }
 
   public boolean validateLength() {