What's the difference between Matcher.lookingAt() and find()?

I am looking at Java regex tutorial, the title pretty much explains itself. It looks like Matcher.lookingAt() is trying to match the entire String. Is that true?

The documentation for Matcher.lookingAt clearly explains the region lookingAt tries to match:

Like the matches method, this method always starts at the beginning of the region; unlike that method, it does not require that the entire region be matched.

So no, lookingAt does not require matching the whole string. Then what's the difference between lookingAt and find? From the Matcher Javadoc overview:

• The matches method attempts to match the entire input sequence against the pattern.
• The lookingAt method attempts to match the input sequence, starting at the beginning, against the pattern.
• The find method scans the input sequence looking for the next subsequence that matches the pattern.

lookingAt always starts at the beginning, but find will scan for a starting position.

Viewed another way, matches has a fixed start and end, lookingAt has a fixed start but a variable end, and find has a variable start and end.