Password Strength Checker

Author: siddharthtankariya

passwd_strength/PasswordStrength.java

@@ -0,0 +1,47 @@
+public class PasswordStrength {
+    public static void main(final String ar[]) {
+        String password = AbraKadabra1287832FQENi;
+
+        boolean hasLetter = false;
+        boolean hasDigit = false;
+		boolean hasUpperCase = false;
+		boolean hasLowerCase = false;
+		
+        if (password.length() >= 8) {
+            for (int i = 0; i < password.length(); i++) {
+                char x = password.charAt(i);
+                if (Character.isLetter(x)) {
+					if(Character.isUpperCase(x)){
+						
+						hasUpperCase = true;
+						
+					}else if(Character.isLowerCase(x)){
+						
+						hasLowerCase = true;
+					}
+					
+                    hasLetter = true;
+                }
+
+                else if (Character.isDigit(x)) {
+
+                    hasDigit = true;
+                }
+
+                // no need to check further, break the loop
+                if(hasLetter && hasDigit && hasUpperCase && hasLowerCase){
+
+                    break;
+                }
+
+            }
+            if (hasLetter && hasDigit && hasUpperCase && hasLowerCase) {
+                System.out.println("STRONG");
+            } else {
+                System.out.println("NOT STRONG");
+            }
+        } else {
+            System.out.println("HAVE AT LEAST 8 CHARACTERS");
+        }
+    }
+}