CODEWITHSUNDEEP
javastringchar
Aditya
Aditya

Reputation: 1058

The operator + is undefined for the argument type(s) char[], int

String x = "abcd";

Arrays.asList(x.toCharArray()).forEach(y -> System.out.println(y + 1));
// this line is giving an error that + operator is undefined for char[] and int.

Arrays.asList(new Integer[]{1, 2}).forEach(y -> {System.out.println(y + 1);});
// for integer it is working fine.

When we use + operator for doing something like this 'a' + 1 we get 98 because ASCII value of a is 97. So why it is not working with char array in the above case.

Any thoughts on this?

Upvotes: 1

Views: 356

Answers (1)

Youcef LAIDANI
Youcef LAIDANI

Reputation: 60016

Arrays.asList consider x.toCharArray() as an object because x.toCharArray() return char[], so it is considers as one element, and you can't make char[] + int, to solve this you can use x.chars() :

x.chars().forEach(y -> System.out.println(y + 1));

Upvotes: 3

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