正则表达式

public static boolean isEnglish(String s) {
    String pattern = "[a-zA-Z]";  
    Pattern r = Pattern.compile(pattern); 
    Matcher m = r.matcher(s);  
    return m.matches();
}
public static boolean isPhone(String phone) {  
    String pattern = "(13\\d|14[57]|15[^4,\\D]|17[678]|18\\d)\\d{8}|170[059]\\d{7}";    
    Pattern r = Pattern.compile(pattern); 
    Matcher m = r.matcher(phone);  
    return m.matches();
}
public static boolean isEmail(String email) {  
    String pattern = "\\w[-\\w.+]*@([A-Za-z0-9][-A-Za-z0-9]+\\.)+[A-Za-z]{2,14}";
    Pattern r = Pattern.compile(pattern);  
    Matcher m = r.matcher(email);  
    return m.matches();
}
public static boolean isPassWord(String passWord) {   
    String pattern = "^(?=.*?[a-zA-Z])(?=.*?[0-9])[a-zA-Z0-9]{6,16}$"; 
    Pattern r = Pattern.compile(pattern); 
    Matcher m = r.matcher(passWord);  
    return m.matches();
}