The following programs demonstrates how to remove the white spaces using matcher.replaceAll(String replacement) method of Util.regex.Pattern class.
The java.util.regex.Matcher.replaceAll(String replacement) method replaces every subsequence of the input sequence that matches the pattern with the given replacement string.
Declaration: public String replaceAll(String replacement)
Parameters: replacement – The replacement string.
Return Value:The string constructed by replacing each matching subsequence by the replacement string, substituting captured subsequences as needed.
// Java program to remove whitespaces from a string import java.util.regex.Matcher; import java.util.regex.Pattern; public class GeeksforGeeks { public static String removeWhite(String s) { // Creating a pattern for whitespaces Pattern patt = Pattern.compile("[\\s]"); // Searching patt in s. Matcher mat = patt.matcher(s); // Replacing return mat.replaceAll(""); } public static void main(String[] argv) { String s = "Hello Everyone . Welcome " + "to Geeks for Geeks."; System.out.println(removeWhite(s)); } } |
HelloEveryone.WelcometoGeeksforGeeks.
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