How to count number of characters in a string

Question

I am trying to count the amount of 'x' characters that are in a string, and print out the number. I end up just counting the number of characters in the string instead. Here is what I have tried:

int count = 0;

for (int j = 0; j < input1.length(); j++)
{
  char character = input1.charAt(j);
  count++;
}

if (indexX != -1)
  {
     System.out.println("x count: "+count);
  } // indexX = input1.indexOf('x');

Well you have to check if 'character' is actually x – MartinS Feb 10 '16 at 02:18 — MartinS, Feb 10 '16 at 02:18

score 2 · Answer 1 · answered Feb 10 '16 at 02:19

2

You are not checking if the chacter is x, and then increasing the counter.

if(character == 'x')
  counter++;

answered Feb 10 '16 at 02:19

shadowfire

106
3

score 0 · Answer 2 · answered Feb 10 '16 at 02:18

0

You never check what the character is.

char character = input1.charAt(j);
if (character == 'x') {
  count++;
}

answered Feb 10 '16 at 02:18

Tim Jasko

1,532
1
8
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score 0 · Answer 3 · answered Feb 10 '16 at 02:29

0

You need to check if the character is 'x'. This is how you do it :

for (int j = 0; j < input1.length(); j++)
{
  char character = input1.charAt(j);
  if (character == 'x' || character == 'X') {
  count++;
 {
}

answered Feb 10 '16 at 02:29

Clyme

84
2
12

score 0 · Answer 4 · answered Feb 10 '16 at 02:58

0

How about comparing length of string pre and post replace, have a look at http://www.rosettacode.org/wiki/Count_occurrences_of_a_substring#Java

Common method that would work everywhere.

answered Feb 10 '16 at 02:58

Vinay Pandey

8,589
9
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How to count number of characters in a string

4 Answers4