Method frame

java/src/org/openqa/selenium/WebDriver.java:393–393

Select a frame by its (zero-based) index. Selecting a frame by index is equivalent to the JS expression window.frames[index] where "window" is the DOM window represented by the current context. Once the frame has been selected, all subsequent calls on the WebDriver interface are made to that frame.

(int index)

     * @throws NoSuchFrameException If the frame cannot be found
     */
    WebDriver frame(int index);

    /**
     * Select a frame by its name or ID. Frames located by matching name attributes are always given