collapse String Whitespace - Java java.lang

Description

collapse String Whitespace

Demo Code

//package com.java2s;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Main {
    public static void main(String[] argv) throws Exception {
        String s = "java2s.com";
        System.out.println(collapseWhitespace(s));
    }/*from  ww  w .  j  a  va 2 s  .c o m*/

    public static final Pattern WHITESPACE_COLLAPSE_PATTERN1 = Pattern
            .compile("([\\r\\n\\t])");
    public static final Pattern WHITESPACE_COLLAPSE_PATTERN2 = Pattern
            .compile("(\\s{2,})");

    public static String collapseWhitespace(String s) {
        Matcher m1 = WHITESPACE_COLLAPSE_PATTERN1.matcher(s);
        s = m1.replaceAll(" ");
        Matcher m2 = WHITESPACE_COLLAPSE_PATTERN2.matcher(s);
        return m2.replaceAll(" ");
    }
}

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