import java.util.ArrayList;
import java.util.List;

public class Test {
    public static void main(String[] args) {
		String output ="";
        String s = "Really long stuffReally long stuff Really long stuff Really long stuff Really long stuff Really long stuff  ";
        for (String part : getParts(s, 100)) {
            part += "<br>";
            //System.out.println(part);
			output += part;
        }
    }
    private static List<String> getParts(String string, int partitionSize) {
        List<String> parts = new ArrayList<String>();
        int len = string.length();
        for (int i=0; i<len; i+=partitionSize)
        {
            parts.add(string.substring(i, Math.min(len, i + partitionSize)));
        }
        return parts;
    }
}