/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		String qString = "http://w...content-available-to-author-only...n.com?id=1&case=edit&start=2&end=5";
		qString = qString .replaceAll("(?<=[?&;])case=.*?($|[&;])",""); 
		System.out.println(qString);
	}
}

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