/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
import java.util.regex.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
public static String encodeURIComponent(String c) {
	return "<" + c + ">";
}
public static void main (String[] args) throws java.lang.Exception
	{
    Pattern p = Pattern.compile("\\b(\\w[^=?]*)=([^&]*)");
    Matcher m = p.matcher("http://w...content-available-to-author-only...o.com/bar/foo?a=,b &c =d");
    StringBuffer sb = new StringBuffer();
    while (m.find()) {
        String key = m.group(1);
        String value = m.group(2);
        m.appendReplacement(sb,
            encodeURIComponent(key) + "=" + encodeURIComponent(value));
    }
    m.appendTail(sb);
    System.out.println(sb.toString());
}
}

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