java正则表达式

public static void main(String[] args) {
Pattern pe = Pattern.compile("([0-9]{1,3}[.]{1}){3}[0-9]{1,3}");
Matcher mc = pe.matcher("21.16.111.111");
System.out.println(mc.matches());
pe = Pattern.compile("[1]{1}\\d{10}");
mc = pe.matcher("12222222222");
System.out.println(mc.matches());
pe = Pattern.compile("[0-9]{11}");
mc = pe.matcher("1231111111");
System.out.println(mc.matches());
}