Strings

Question

I feel that in the java course should have a deeper look into strings. cause i dont quite get the "substrings", "charAt()", or the different methods used in strings like "Equality()", "compareTo()", "trim()", and things like immutability. sure I know of it but i only have a small understanding of it and dont quite understand it to put it into use..

Answer 1

You can find a lot of examples e.g. Here:
https://www.tutorialspoint.com/java/java_strings.htm
Also it may be useful to look at the challenges, particularly those that deal with text (like password validation and stuff) and check some sample Java solutions.