// src/test/java/com/example/CalculatorTest.java
// src/main/java/com/example/Calculator.java maven minx work
@Test void testSubtract() { assertEquals(5, calculator.subtract(10, 5), "Subtraction failed"); } // src/test/java/com/example/CalculatorTest
// src/main/java/com/example/App.java
public double divide(double a, double b) { if (b == 0) { throw new ArithmeticException("Cannot divide by zero"); } return a / b; } } Modify App.java to use the Calculator class: } return a / b