Cannot invoke sendKeys(String) on the primitive type void

Question

I am new to selenium and I am implementing a data driven frame work using page factory and keep getting the following error:

Cannot invoke sendKeys(String) on the primitive type void

when trying to set my test script- for the following:

String sEmail = ExcelUtil.getCellData (1,1);

loginpage.setEmail().sendKeys(sEmail);

Here is my java file:

package pages;



import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.support.FindBy;
import org.openqa.selenium.support.How;

public class AmazonLoginPage {

 WebDriver driver;



    //public static void main(String[] args) {


    public AmazonLoginPage (WebDriver driver)  {
        this.driver=driver;

    }

//Using FindBy for locating Elements 
@FindBy(how=How.CSS, using="#ap_email")  WebElement emailTextBox;
@FindBy(how=How.CSS, using="#ap_password")  WebElement passwordTextBox;
@FindBy(how=How.CSS, using="#continue")  WebElement continueButton;
@FindBy(how=How.CSS, using="#signInSubmit")  WebElement signInSubmitButton;


//This method is used to set email in the email text box
public void setEmail() {
    emailTextBox.sendKeys();
}
//public void setEmail(String strEmail) {
    //emailTextBox.sendKeys();



//This method is used Continue after entering email
public void clickOnContinueButton() {
    continueButton.click();

}

//This method is used to set password in the password text box
public void setPassword (String strPassword) {
    passwordTextBox.sendKeys(strPassword);


}
//This method is used to click on the Sign In Button
public void clickOnSignInSubmitButton () {
    signInSubmitButton.click();
}
}

Here is my test script-

package appModules;

import org.openqa.selenium.WebDriver;
import org.openqa.selenium.support.PageFactory;

import pages.AmazonHomePage;
import pages.AmazonLoginPage;
import utility.ExcelUtil;

public class SignIn_Action {

    WebDriver driver;

    public static void Execute (WebDriver driver) throws Exception {

        //Get values from Excel sheet, passing parameters to getCellData method
AmazonLoginPage loginpage = PageFactory.initElements(driver, AmazonLoginPage.class);
AmazonHomePage homepage = PageFactory.initElements(driver, AmazonHomePage.class);

homepage.clickOnSignIn();

String sEmail = ExcelUtil.getCellData (1,1);
String sPassword = ExcelUtil.getCellData(1, 2);


    loginpage.setEmail().sendKeys(sEmail);


    loginpage.clickOnContinueButton();

    loginpage.clickOnSignInSubmitButton();            

    }
}

Answer 1

Return type of setEmail() method is void, so you can't call sendKeys() on this method.

This should be replaced :

loginpage.setEmail().sendKeys(sEmail);  

With :

loginpage.setEmail(sEmail);  

and your setEmail method should take a string argument like this :

public void setEmail(String email) {
    emailTextBox.sendKeys(email);
}