import java.util.*;
import java.util.regex.*;
import java.lang.*;
 
class Main
{
	public static void main (String[] args) throws java.lang.Exception
	{
    String data = "==SOME_ID== - item 1 - item 2 - item 3 .. item 100 == SOME_ID_2 == - item 1 - item 2 - item 3 ... item 100 == SOME_ID_3 == ...";
    Pattern p = Pattern.compile("==([^=]+)==([^=]+)(?=(?:=|$))");
	Matcher m = p.matcher(data);
    while (m.find()) {
        System.out.println("ID="+m.group(1));
        System.out.println("Data="+m.group(2));
    }
	}
}

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