Click on alert ok on modal in selenium

Question

I wish to click on ok button on alert in modal, but unable to click on it.

// Capturing alert message.    
String alertMessage= driver.findElement(By.className("modal-header"))
                           .getText();

System.out.println(alertMessage);


String okButton= driver.findElement(By.xpath("//h4[contains(text(),'Woo Hoo! You have successfully registered! Look ou')]"))
                       .getText();
System.out.println(okButton);

driver.findElement(By.xpath("//button[contains(text(),'OK')]"))
      .click();

Tried this code but it's not working.This is what I am getting in console

: unknown error: Element <button type="button" class="close" ng-click="goTOLogin()">...</button> is not clickable at point (897, 161). Other element would receive the click: <div class="loader" style="display: block; opacity: 0.681626;"></div>

This is the html code:

<div id="registration" class="modal fade ng-scope in" role="dialog" style="display: block;">
  <div class="modal-dialog modal-md add-brand">
    <!-- Modal content-->
    <div class="modal-content flat-modal">
      <div class="modal-header">
        <button type="button" class="close" ng-click="goTOLogin()">X</button>
        <h4 class="modal-title common-title" style="" xpath="1">successfully registered</h4>
      </div>
      <div class="modal-body flat-body">
        <div class="clearfix"></div>
        <h4>Woo Hoo! You have successfully registered! Look out for the activation link in your email.</h4>
        <div class="modal-footer text-left">
          <button type="button" class="close" ng-click="goTOLogin()" style="">OK</button>
        </div>
      </div>
    </div>
  </div>
</div>

Answer 1

You can press enter for accepting alerts.

Robot robot=new Robot();
robot.keyPress(KeyEvent.VK_ENTER);
robot.keyRelease(KeyEvent.VK_ENTER);