/* package whatever; // don't place package name! */
 
import java.util.*;
import java.util.regex.*;
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 str = "@tag some text goes here and @tag nobody @tag should care about it @tag";
		String tag = "@tag";
		int start = str.indexOf(tag);
		int end = str.lastIndexOf(tag);
		if (start >= 0 && end > start) {
			String res = str.substring(start, end).replaceAll(Pattern.quote(tag)+"\\s*", "").trim();
			System.out.println("Result: '"+res+"'");
		} else {
			System.out.println("Tag not found.");
		}
	}
}

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