From char array to string

Question

hi there

so for the past hours ive been trying to figure out how im suppose to do this..

so lets say i have a string.
String text = "Hello";

i've made that string into an char array using

char[] chars = text.toCharArray();
So you know the sentence is ['h', 'e', 'l','l','o'...]
So know i'm trying to add for example plus 2 to each letter using the ascii table.
so h becomes j.
e becomes g.
I hope that makes sense.

I've been able to do that using
for(char c : chars) {
c+=2;
system.out.print(c);
}

the output would be something like jgnnq
The problem is i'm using swing for GUI. And i can't use chars.

So my idea was to make some kind of loop that converts each char to string.
i have to put the new values into a new array. But thats my problem idk how.

So the char array{"H","e", "l", "l","o"} becomes
a string array{"jgnnq"}
(added +2 to each char)

if anything doesn't make sense, im happy to provide more information.

Answer 1

Very important thing is that for-each loop can't modify array elements.

In your code `char c` is a copy of actual element. If you modify `c` it'll have no effect on original element.

https://code.sololearn.com/cxc4aFVsr5Ar/?ref=app

This is applicable even if it's array of objects.

Answer 2

You are a life saviour man. I can't believe i was struggeling so hard for something so simple.

Answer 3

When i try to do what u did i get a duplicate local variable error. But i have the exact code u typed.

https://code.sololearn.com/cKkP9DkYC4ca