Calculator calculatorMock = EasyMock.createMock(Calculator.class); EasyMock.expect(calculatorMock.add(2, 3)).andReturn(5); EasyMock.expect(calculatorMock.subtract(5, 2)).andThrow(new RuntimeException("Error")); EasyMock.replay(calculatorMock); EasyMock.verify(calculatorMock); Calculator calculatorMock = EasyMock.createMock(Calculator.class); EasyMock.expect(calculatorMock.divide(EasyMock.eq(10), EasyMock.anyInt())).andReturn(5); EasyMock.replay(calculatorMock); EasyMock.verify(calculatorMock);