Please I need a well and detailed explanation on "The equals() method"

Question

like how to write a code on equals()method (preferably on phone), and it uses

Answer 1

The java string equals() method compares the two given strings based on the content of the string. If any character is not matched, it returns false. If all characters are matched, it returns true.

https://www.javatpoint.com/java-string-equals

Answer 2

Ok thank you,but there is one that I don't understand the name is 'equals()' it source code is really long.It like on the second page please like does it have a different use other than the one you just stated

Answer 3

equals() function is inherited (implemented proper term) from Object class. If you override it, it allows you to define your own method of comparing two different objects.
For example, you have a Animal class. You can override equals, on every class that extends Animal, so you can compare a Bird with other birds for their featherColors, or a Cat with other cats for their breedName.