CODEWITHSUNDEEP
javacharacter
Stanley Mungai
Stanley Mungai

Reputation: 4150

Count the number of characters between a specific character(Including spaces)

I have a File that is in this format:

City|the Location|the residence of the customer| the age of the customer| the first name of the customer|

I need to read just the first line an determine how many characters are between the sign "|". I need the code to read even the spaces.

This is the code I have:

`FileInputStream fs = new FileInputStream("C:/test.txt");
BufferedReader br = new BufferedReader(new InputStreamReader(fs));
StringBuilder sb = new StringBuilder();

for(int i = 0; i < 0; i++){
br.readLine();
}
String line  = br.readLine();

System.out.println(line);

String[] words = line.split("|");
for (int i = 0; i < words.length; i++) {
    int counter = 0;
    if (words[i].length() >= 1) {
        for (int k = 0; k < words[i].length(); k++) {
            if (Character.isLetter(words[i].charAt(k)))
                counter++;
        }
        sb = new StringBuffer();
        sb.append(counter).append(" ");
    }
}
System.out.println(sb);
}

`

I am very new to java

Upvotes: 0

Views: 1292

Answers (4)

Teg
Teg

Reputation: 1312

For better performaces use StringTokenizer instead of String.split(), here an example:

FileInputStream fs = new FileInputStream("C:/test.txt");
BufferedReader br = new BufferedReader(new InputStreamReader(fs));
StringBuilder sb = new StringBuilder();

String line  = br.readLine();

System.out.println(line);

StringTokenizer tokenizer = new StringTokenizer(line, "|");
while (tokenizer.hasMoreTokens()) {
    String token = tokenizer.nextToken();
    sb.append(token.length()).append(" "); 
}
System.out.println(sb.toString());

Upvotes: 1

Michael Laffargue
Michael Laffargue

Reputation: 10304

First :

for(int i = 0; i < 0; i++){
  br.readLine();
}

This will do nothing since you enter the for only if i is inferior to 0

Then:

if (words[i].length() >= 1) {

This if is not very useful since you won't enter the next for if words[i].length() is 0

Finally without testing it, it seems rather correct you may want to test if the character is a letter OR words[i].charAt(k).equals(" ") for spaces

Upvotes: 2

kentcdodds
kentcdodds

Reputation: 29071

Try something like this:

String line = "City|the Location|the residence of the customer| the age of the customer| the first name of the customer|";
String[] split = line.split("\\|"); //Note you need the \\ as an escape for the regex Match
for (int i = 0; i < split.length; i++) {
  System.out.println("length of " + i + " is " + split[i].length());
}

The output:

length of 0 is 4
length of 1 is 12
length of 2 is 29
length of 3 is 24
length of 4 is 31

Upvotes: 2

aioobe
aioobe

Reputation: 421150

I need to read just the first line an determine how many characters are between the sign "|". I need the code to read even the spaces.

String.split takes a regular expression, so | needs to be escaped. Use \\| and then 

words[i].length()

will give you the number of characters between the | symbols.

Upvotes: 3

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