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Capitalize First Letter Of Each Sentence Of A StyledDocument

December 28, 2010 by blogmeister·0 Comments

Part of this method is taken from an existing post I published on how to capitalize the first letter of every sentence in a String using Java. I used the same logic to incorporate it into the contents of a Document object.

While I used StyledDocument in the title of my post, this can actually work on other kind of documents like HTMLDocument. You just need to add a DocumentListener to the document object and pass the DocumentEvent as the parameter.

private void formatSentences(DocumentEvent e) {
    if (e.getDocument() instanceof HTMLDocument && e.getDocument().getLength() > 0) {
        char[] arr = null;
        try {
            arr = document.getText(0, document.getLength()).toCharArray();
        } catch (BadLocationException ex) { }
        if (arr == null)
            return;
        // Start off by indicating to capitalize the first letter.
        boolean cap = true;
        boolean space_found = true;
        for (int i = 0; i<arr.length; i++) {
            if (cap) {
                if (Character.isWhitespace(arr[i]) ||
                        (pilcrowButton.isSelected() && arr[i] == Default.CHAR_UNICODE_DIAMOND))
                    space_found = true;
                else {
                    if (space_found && !Character.isUpperCase(arr[i])) {
                        try {
                            dontFormatSentence = true;
                            SimpleAttributeSet attrs = new SimpleAttributeSet(document.getCharacterElement(i).getAttributes());
                            document.remove(i, 1);
                            document.insertString(i, Character.toString(arr[i]).toUpperCase(), attrs);
                        } catch (BadLocationException ex) { }
                    }
                    cap = false;
                    space_found = false;
                }
            } else {
                if (arr[i] == '.' || arr[i] == '?' || arr[i] == '!') {
                    cap = true;
                }
            }
        }
    }
}

private void formatSentences(DocumentEvent e) {

if (e.getDocument() instanceof HTMLDocument && e.getDocument().getLength() > 0) {

char[] arr = null;

try {

arr = document.getText(0, document.getLength()).toCharArray();

} catch (BadLocationException ex) { }

if (arr == null)

return;

// Start off by indicating to capitalize the first letter.

boolean cap = true;

boolean space_found = true;

for (int i = 0; i<arr.length; i++) {

if (cap) {

if (Character.isWhitespace(arr[i]) ||

(pilcrowButton.isSelected() && arr[i] == Default.CHAR_UNICODE_DIAMOND))

space_found = true;

else {

if (space_found && !Character.isUpperCase(arr[i])) {

try {

dontFormatSentence = true;

SimpleAttributeSet attrs = new SimpleAttributeSet(document.getCharacterElement(i).getAttributes());

document.remove(i, 1);

document.insertString(i, Character.toString(arr[i]).toUpperCase(), attrs);

} catch (BadLocationException ex) { }

}

cap = false;

space_found = false;

}

} else {

if (arr[i] == '.' || arr[i] == '?' || arr[i] == '!') {

cap = true;

}

Capitalize First Letter Of Every Sentence In Java Without Using Regex

December 2, 2010 by blogmeister·2 Comments

Here is a method I found in the Internet made by a certain Dogstopper of dream.in.code where every first letter of a sentence is capitalized using Java. I have my own but it uses Regex so I decided to post this one here for future reference.

public static String capitalizeFirstLetterOfEachSentence(String str){
    char[] arr = str.toCharArray();
    // Start off by indicating to capitalize the first letter.
    boolean cap = true;
    boolean space_found = true;
    for (int i = 0; i<arr.length; i++){
        if (cap) {
            // white space includes \n, space
            if (Character.isWhitespace(arr[i])) 
                space_found = true;
            else {
                if (space_found && !Character.isUpperCase(arr[i]))
                    arr[i] = Character.toUpperCase(arr[i]);
                cap = false;
                space_found = false;
            }
        } else {
            if (arr[i] == '.' || arr[i] == '?' || arr[i] == '!') {
                cap = true;
            }
        }
    }
    return new String(arr);
}

public static String capitalizeFirstLetterOfEachSentence(String str){

char[] arr = str.toCharArray();

// Start off by indicating to capitalize the first letter.

boolean cap = true;

boolean space_found = true;

for (int i = 0; i<arr.length; i++){

if (cap) {

// white space includes \n, space

if (Character.isWhitespace(arr[i]))

space_found = true;

else {

if (space_found && !Character.isUpperCase(arr[i]))

arr[i] = Character.toUpperCase(arr[i]);

cap = false;

space_found = false;

}

} else {

if (arr[i] == '.' || arr[i] == '?' || arr[i] == '!') {

cap = true;

}

return new String(arr);

}

Capitalize First Letter Of Every Sentence In Java

September 24, 2010 by blogmeister·5 Comments

Here is a method in Java that capitalizes the first letter of every sentence found. This is made possible through the use of regular expressions (Regex).

The regex string in this method capitalizes the first letter found after either a period, question mark or exclamation point. The number of space characters in between does not matter so if you have 2 or 3 spaces after a period, the very first alphabet character it can find will be capitalized.

The drawback of this regular expression is that the very first letter of the string does not get capitalized. Hence, I added a little workaround code after the regex operation to make sure the first letter of the String is capitalized.

public static String capitalizeFirstLetterInEverySentence(String content) {
    Pattern capitalize = Pattern.compile("([\\?!\\.]\\s*)([a-z])");
    Matcher m = capitalize.matcher(content);
    while (m.find()) {
        content = m.replaceFirst(m.group(1) + m.group(2).toUpperCase());
        m = capitalize.matcher(content);
    }
    // Capitalize the first letter of the string.
    content = String.format("%s%s", Character.toUpperCase(content.charAt(0)), content.substring(1));
    return content;
}

public static String capitalizeFirstLetterInEverySentence(String content) {

Pattern capitalize = Pattern.compile("([\\?!\\.]\\s*)([a-z])");

Matcher m = capitalize.matcher(content);

while (m.find()) {

content = m.replaceFirst(m.group(1) + m.group(2).toUpperCase());

m = capitalize.matcher(content);

}

// Capitalize the first letter of the string.

content = String.format("%s%s", Character.toUpperCase(content.charAt(0)), content.substring(1));

return content;

}

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Tag: sentence

Capitalize First Letter Of Each Sentence Of A StyledDocument

Capitalize First Letter Of Every Sentence In Java Without Using Regex

Capitalize First Letter Of Every Sentence In Java