Created random number / coin flip generator with error catching

practice_projects/src/randomNums.java

@@ -0,0 +1,74 @@
+import java.util.Random;
+import java.util.Scanner;
+
+public class randomNums {
+    public static void main(String[] args) {
+
+        Random random = new Random();
+        Scanner scanner = new Scanner(System.in);
+
+        int number;
+        boolean isHeads;
+        String choice;
+        int limit;
+
+        // loop to make sure user picks valid selection
+        while (true) {
+            System.out.print("Random number or coin flip? (num/coin) ");
+            choice = scanner.nextLine();
+
+            // If user chose Num
+            if (choice.equals("num")) {
+
+                // Validate numeric input
+                while (true) {
+                    System.out.print("Random number between 1 and what? ");
+                    String input = scanner.nextLine();
+
+                    // Catch invalid number inputs
+                    try {
+                        limit = Integer.parseInt(input);
+
+                        if (limit <= 0) {
+                            System.out.println("❌ Please enter a number greater than 0.\n");
+                            continue;
+                        }
+
+                        break;
+
+                    } catch (NumberFormatException e) {
+                        System.out.println("❌ That's not a valid number. Try again.\n");
+                    }
+                }
+
+                // Pick the random number
+                number = random.nextInt(limit) + 1;
+                // Print out the random number
+                System.out.println("\nRandom number between 1 and " + limit +": \n" + number);
+                break;
+            }
+
+
+            // If user chose Coin
+            else if (choice.equals("coin")) {
+                // Flip a coin
+                isHeads = random.nextBoolean();
+                // Print out the result
+                if (isHeads) {
+                    System.out.println("\nHeads");
+                } else {
+                    System.out.println("\nTails");
+                }
+                break;
+            }
+
+            // If the user choice was invalid. Print error
+            else {
+                System.out.println("Invalid choice. Please type 'num' or 'coin'.\n");
+            }
+
+        }
+        scanner.close();
+    }
+
+}