1 files changed, 5 insertions, 3 deletions
diff --git a/src/Q3/CreditCard.java b/src/Q3/CreditCard.java
index 1146129..e6dc0f8 100644
--- a/src/Q3/CreditCard.java
+++ b/src/Q3/CreditCard.java
@@ -35,7 +35,7 @@ public class CreditCard {
   }
 
   public boolean isValid() {
-    return false;
+    return this.validateCompany() && this.validateLength();
   }
 
   public boolean isDivisibleBy10() {
@@ -50,11 +50,13 @@ public class CreditCard {
   }
 
   public boolean validateLength() {
-    return false;
+    return this.ccNumber.length() >= 13 && this.ccNumber.length() <= 16;
   }
 
   public boolean validateNumber() {
-    return false;
+    for (int i = 0; i < this.ccNumber.length(); i++)
+      if (!Character.isDigit(this.ccNumber.charAt(i))) return false;
+    return true;
   }
 
   public boolean validateSums() {