Custom RuntimeException

Build a stock-checking system:
1. Create a class OutOfStockException that extends RuntimeException. Its constructor takes a String item name and passes "Out of stock: " + item to super.
2. Write a method checkStock(String item, int qty) that throws OutOfStockException if qty is 0.
3. In main, read an item name and quantity. Call checkStock, print "In stock" if no exception, or print e.getMessage() if caught.

⚠️ AUTO-INPUT MODE: The input stream will automatically contain 'apples 0\n'.

Expected Output:

Out of stock: apples

Topics:

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