java - In regex difference betewen \\G and ^ -

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i see link these 2 boundary matches quite similar: \g , ^.

i have seen example of \g have shown @ end of same link.

    enter regex: dog  enter input string search: dog dog found text "dog" starting @ index 0 , ending @ index 3. found text "dog" starting @ index 4 , ending @ index 7.  enter regex: \gdog  enter input string search: dog dog found text "dog" starting @ index 0 , ending @ index 3.

it's clear compared no boundary matchers, about:

enter regex: \gdog  enter input string search: dog dog found text "dog" starting @ index 0 , ending @ index 3.

vs

enter regex: ^dog  enter input string search: dog dog found text "dog" starting @ index 0 , ending @ index 3.

what subtle difference between 2?

this explains \g

https://forums.oracle.com/thread/1255361

\g start searches start of string , keep searching after first match ended.

^ give 1 result search ends if match found @ beginning of search


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