【正则表达式】车牌号判断

public boolean cph(String a) {
        String pattern = "([京津沪渝冀豫云辽黑湘皖鲁新苏浙赣鄂桂甘晋蒙陕吉闽贵粤青藏川宁琼]{1}(([A-HJ-Z]{1}[A-HJ-NP-Z0-9]{5})|([A-HJ-Z]{1}(([DF]{1}[A-HJ-NP-Z0-9]{1}[0-9]{4})|([0-9]{5}[DF]{1})))|([A-HJ-Z]{1}[A-D0-9]{1}[0-9]{3}警)))|([0-9]{6}使)|((([沪粤川云桂鄂陕蒙藏黑辽渝]{1}A)|鲁B|闽D|蒙E|蒙H)[0-9]{4}领)|(WJ[京津沪渝冀豫云辽黑湘皖鲁新苏浙赣鄂桂甘晋蒙陕吉闽贵粤青藏川宁琼·•]{1}[0-9]{4}[TDSHBXJ0-9]{1})|([VKHBSLJNGCE]{1}[A-DJ-PR-TVY]{1}[0-9]{5})";
        boolean matches = a.matches(pattern);
        return matches;
    }