求助，Java字符串分割问题

public class RegularExpressionDemo
{
public static void main(String[] args)
{
String text="abcdebcadxbc";
String [] tokens=text.split(".bc");
for(String token:tokens)
{
System.out.print(token+" ");
}
System.out.println();

tokens=text.split("..cd");
for(String token:tokens)
{
System.out.print(token+" ");
}
System.out.println();
}
}