Java recursion build error: array required, but string found?

Question

I really need help fixing this line of my code, I keep getting these two errors:

First Error: array required, but String found if(x.length() == 0 && y.length() > 0 && y[0] == "*")

Second Error: no suitable method found for replace(int,int) String newY = y.replace(0,1); any help would be appreciated

//Second string is empty and there is wildCard character
if(y.length() == 0 && wildCard)
{
    return true;
}
if(x.length() == 0 && y.length() > 0 && y[0] == "*")
{
    String newY = y.replace(0,1);
    return match(x, newY, true);
}

newY is a String, and your method match requires an array. — Hunter McMillen
– Hunter McMillen, Commented Mar 30, 2013 at 22:58

Luan Nico · Accepted Answer · 2013-03-30 23:05:00Z

3

y[0] is for arrays; use y.charAt(0) for strings instead. Furthermore, compare it with '' (the character), and not with "" another string.

answered Mar 30, 2013 at 23:05

Luan Nico

6,0533 gold badges33 silver badges63 bronze badges

Sign up to request clarification or add additional context in comments.

4 Comments

mvitagames Over a year ago

thank you so much, but how do i I do this in Java String newY = y.remove(0,1); <----- this doesnt seem to work in java any help? { String newY = y.replace(0,1); return match(x, newY, true); }

Luan Nico Over a year ago

So I'm assuming you meant replace: String newY = y.replace(0, 1) won't work, because 0 and 1 are int. Try replace('0', '1'), with chars.

mvitagames Over a year ago

wanted to remove string y between 0-1

Luan Nico Over a year ago

Then you can use substring. If you want to remove between 0 and 1 inclusive, then you want the string after the second position; just do y.substring(2). If you want to remove between 0 (inclusive) and 1 (exclusive), then do: y.charAt(0) + y.substring(2).

Will Hartung · Accepted Answer · 2013-03-30 23:01:01Z

3

In

if(x.length() == 0 && y.length() > 0 && y[0] == "*")

The "*" is a String, not a character.

Also, the y[0] does not work with Strings in Java, only arrays. That's likely your problem.

answered Mar 30, 2013 at 23:01

Will Hartung

119k20 gold badges134 silver badges209 bronze badges

Collectives™ on Stack Overflow

Java recursion build error: array required, but string found?

2 Answers 2

4 Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

4 Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related