Getting "Does not have a matching glue code" error for empty fields using Cucumber

Question

I'm new to Cucumber. I want to test two login scenarios:

1. With valid credentials where user should be able to login successfully
2. With empty username and password where the user should not be able to login

I have the following code for the above scenario:

Scenario Outline: Test login with valid credentials
Given Open firefox and start application
When I enter "<username>" and "<password>"
Then User should be able to login successfully

Examples: 
  | username | password |
  | ro       | mech     |

Scenario Outline: Test login with empty credentials
Given Open firefox and start application
When I enter  "<username>" and "<password>" (this shows a warning)
Then User should be not able to login 

Examples: 
  | username | password |
  |          |          |

In the java file I have the following code:

@When("^I enter \"([^\"]*)\" and \"([^\"]*)\"$")
public void I_enter_and_(String username, String password) throws Throwable {
    driver.findElement(By.id("ember629")).sendKeys(username);
    driver.findElement(By.id("ember640")).sendKeys(password);

}

My question is scenario 2 shows a warning message:

Step 'I enter  "<username>" and "<password>"' does not have a matching glue code

Does this mean that for every scenario like valid, empty and invalid credentials I need to write a separate java function? Can't I use the same java function:

public void I_enter_and_(String username, String password) 

for all the scenarios? If I run the feature file I get this output:

You can implement missing steps with the snippets below:

@When("^I enter  \"([^\"]*)\" and \"([^\"]*)\"$")
public void i_enter_and(String arg1, String arg2) throws Throwable {
    // Write code here that turns the phrase above into concrete actions
    throw new PendingException();
}

Is there any way to reuse the java function I_enter_and_?

Answer 1

Glue path would be correct and match with stepdef path as follows: