Java怎样实现解析身份证号

身份证号解析，demo

/**
 * 身份证号解析demo
 * */
public class TestArea {
	public static void main(String[] args) {
		System.out.println("测试");
		// 需求：身份证号码，地区号+生日：年+月+日+性别
		String cardNo = "61011320010505241X";
		String area = ""; // 前6位，国家标准（国标GB）
		// 截串，身份证18位，固有长度
		area = cardNo.substring(0, 6);
		System.out.println("区域编码：" + area);
		
		String birthday = "";
		birthday = cardNo.substring(6, 14);
		System.out.println("出生年月：" + birthday);
		
		
		int year; // 从中间变量birthday来截取
		year = Integer.parseInt(birthday.substring(0, 4)); // 字符串转成整数
		System.out.println(year);

		int month;
		System.out.println(birthday.substring(4, 6));
		month = Integer.parseInt(birthday.substring(4, 6));
		System.out.println(month);
		
		int day;
		day = Integer.parseInt(birthday.substring(6));
		System.out.println(day);

		
		System.out.println("" + year + month + day);
		System.out.println("生日："+year + "年" + month + "月" + day + "日");
		
		//倒数第二位
		String sex = "";
		sex = cardNo.substring( cardNo.length() -2 , cardNo.length() -1);
		System.out.println(sex);

	}
}