Regex for special characters in java

Question

public static final String specialChars1= \"\\\\W\\\\S\";
String str2 = str1.replaceAll(specialChars1, \"\").replace(\" \", \"+\");

public static final String speci         


        

Answer 1

I had a similar problem to solve and I used following method:

text.replaceAll("\\p{Punct}+", "").replaceAll("\\s+", "+");

Code with time bench marking

public static String cleanPunctuations(String text) {
    return text.replaceAll("\\p{Punct}+", "").replaceAll("\\s+", "+");
}

public static void test(String in){
    long t1 = System.currentTimeMillis();
    String out = cleanPunctuations(in);
    long t2 = System.currentTimeMillis();
    System.out.println("In=" + in + "\nOut="+ out + "\nTime=" + (t2 - t1)+ "ms");

}

public static void main(String[] args) {
    String s1 = "My text with 212354 digits spaces and \n newline \t tab " +
            "[`~!@#$%^&*()_+[\\\\]\\\\\\\\;\\',./{}|:\\\"<>?] special chars";
    test(s1);
    String s2 = "\"Sample Text=\"  with - minimal \t punctuation's";
    test(s2);
}

Sample Output

In=My text with 212354 digits spaces and 
 newline     tab [`~!@#$%^&*()_+[\\]\\\\;\',./{}|:\"<>?] special chars
Out=My+text+with+212354+digits+spaces+and+newline+tab+special+chars
Time=4ms
In="Sample Text="  with - minimal    punctuation's
Out=Sample+Text+with+minimal+punctuations
Time=0ms