车牌号校验规则

    public static void main(String[] args) {
        String PlateNumMatch = "^(([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使领][A-Z](([0-9]{5}[DF])|([DF]([A-HJ-NP-Z0-9])[0-9]{4})))|([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使领][A-Z][A-HJ-NP-Z0-9]{4}[A-HJ-NP-Z0-9挂学警港澳使领]))$";
        boolean m1 = "闽D12345".matches(PlateNumMatch);
        System.out.println(m1);//true
        boolean m2 = "闽d12345".matches(PlateNumMatch);
        System.out.println(m2);//false
    }