java 判断邮箱格式是否正确

 java 判断邮箱格式是否正确，电话号码是否正确。

代码：

public static boolean isPhoneNumberValid(String phoneNumber) {
boolean isValid = false;
String expression = "((^(13|15|18)[0-9]{9}$)|(^0[1,2]{1}\\d{1}-?\\d{8}$)|(^0[3-9] {1}\\d{2}-?\\d{7,8}$)|(^0[1,2]{1}\\d{1}-?\\d{8}-(\\d{1,4})$)|(^0[3-9]{1}\\d{2}-? \\d{7,8}-(\\d{1,4})$))";
CharSequence inputStr = phoneNumber;
Pattern pattern = Pattern.compile(expression);
Matcher matcher = pattern.matcher(inputStr);
if (matcher.matches()) {
isValid = true;
} // www.jbxue.com
return isValid;
}
public boolean isEmail(String email) {
String str = "^([a-zA-Z0-9_\\-\\.]+)@((\\[[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.)|(([a-zA-Z0-9\\-]+\\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\\]?)$";
Pattern p = Pattern.compile(str);
Matcher m = p.matcher(email);
return m.matches();
}