Google maps in a frame

I am a new Google Web Toolkit user. I have to write a program with
netbeans in which I should have two Text fields and a button. When
running the program a frame should open with the two text fields and
the button where i have to introduce the coordinate of a place and by
clicking on the button the map will apear in the same frame or a new
one showing this place.
Any body has an idea how to do that?

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