3

Here is a function which take a long String and return a string divided in paragraph.

The problem is that k is empty. Why split() function doesn't work? 

private String ConvertSentenceToParaGraph(String sen) {
    String nS = "";
    String k[] = sen.split(".");

    for (int i = 0; i < k.length - 1; i++) {
        nS = nS + k[i] + ".";
        Double ran = Math.floor((Math.random() * 2) + 4);

        if (i > 0 && i % ran == 0) {
            nS = nS + "\n\n";
        }
    }
    return nS;
}
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5 Answers 5

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5

String.split(String regex) takes a regular expression. A dot . means 'every character'. You must escape it \\. if you want to split on the dot character.

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4

split expects a regular expression, and "." is a regular expression for "any character". If you want to split on each . character, you need to escape it:

String k[] = sen.split("\\.");
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3

split() method takes a regex. And . is a meta-character, which matches any character except newline. You need to escape it. Use:

String k[] = sen.split("\\.");
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2

Change:

sen.split(".");

To:

sen.split("\\.");
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1

You need to escape the dot, if you want to split on a dot:

String k[] = sen.split("\\.");

A . splits on the regex ., which means any character.

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1 Comment

It wouldn't compile, you've to use `\` as others have used.

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