CalculatorScreenMethods.java

public CalculatorScreen fillFirstNumber(String number) {
	inputFirstNumber.click();
	inputFirstNumber.clear();
	driver.getKeyboard().sendKeys(number);
	return this;
}

public CalculatorScreen fillSecondNumber(String number) {
	inputSecondNumber.click();
	inputSecondNumber.clear();
	driver.getKeyboard().sendKeys(number);
	return this;
}

public CalculatorScreen closeKeyboard() {
	driver.getKeyboard().pressKey(Keys.RETURN);
	return this;
}

public String operationResult() {
	return resultText.getText().toString().trim();
}

public void quitDriver() {
	driver.quit();
}