Java之字符，字符串的。性别判断，年龄计算，获取生日，身份证**，嘿***嘿操作，替换操作

IDCardUtil.java

import android.text.TextUtils;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Scanner;
import java.text.DecimalFormat;

public class IDCardUtil {
//15位身份证号
private static final Integer FIFTEEN_ID_CARD = 15;
//18位身份证号
private static final Integer EIGHTEEN_ID_CARD = 18;
private static SimpleDateFormat format = new SimpleDateFormat(“yyyy-MM-dd”);

private static String birthDay;

//
//根据身份证号获取性别
public static String getSex(String IDCard) {
    String sex = "";
    if (!TextUtils.isEmpty(IDCard)) {
        //15位身份证号
        if (IDCard.length() == FIFTEEN_ID_CARD) {
            if (Integer.parseInt(IDCard.substring(14, 15)) % 2 == 0) {
                sex = "女";
            } else {
                sex = "男";
            }
            //18位身份证号
        } else if (IDCard.length() == EIGHTEEN_ID_CARD) {
            // 判断性别
            if (Integer.parseInt(IDCard.substring(16).substring(0, 1)) % 2 == 0) {
                sex = "女";
            } else {
                sex = "男";
            }
        }
    }
    return sex;
}

//根据身份证号获取年龄
public static Integer getAge0(String IDCard) {
    Integer age = 0;
    Date date = new Date();
    if (!TextUtils.isEmpty(IDCard)) {
        if (IDCard.length() == FIFTEEN_ID_CARD) {//15位身份证号
            String birthYear15 = "19" + IDCard.substring(6, 8);// 身份证上的年份(15位身份证为1980年前的)
            String birthMonth15 = IDCard.substring(8, 10);// 身份证上的月份
            String birthDay15 = IDCard.substring(10, 12);// 身份证上的日
            String thisYear15 = format.format(date).substring(0, 4);//当前年份
            String thisMonth15 = format.format(date).substring(5, 7);//当前月份
            String toDay15 = format.format(date).substring(8, 10);//当前日
            if (Integer.parseInt(thisYear15) - Integer.parseInt(birthYear15) <= 0) {
                return age = 0;
            }
            if (Integer.parseInt(birthMonth15) < Integer.parseInt(thisMonth15)) {//7<9,已过
                age = Integer.parseInt(thisYear15) - Integer.parseInt(birthYear15);
            }
            if (Integer.parseInt(birthMonth15) == Integer.parseInt(thisMonth15)) {//9=9,当前月
                if (Integer.parseInt(birthDay15) < Integer.parseInt(toDay15)) {//生日小于当前日期,已过+1
                    age = Integer.parseInt(thisYear15) - Integer.parseInt(birthYear15);
                }
                if (Integer.parseInt(birthDay15) == Integer.parseInt(toDay15)) {//生日等于当前日期，今天过+1
                    age = Integer.parseInt(thisYear15) - Integer.parseInt(birthYear15);
                }
                if (Integer.parseInt(birthDay15) > Integer.parseInt(toDay15)) {//生日大于当前日期，未过
                    age = Integer.parseInt(thisYear15) - Integer.parseInt(birthYear15) - 1;
                }
            }
            if (Integer.parseInt(birthMonth15) > Integer.parseInt(thisMonth15)) {//9>7未过，当前用户还没过生日
                age = Integer.parseInt(thisYear15) - Integer.parseInt(birthYear15) - 1;
            }
        } else if (IDCard.length() == EIGHTEEN_ID_CARD) {//18位身份证号
            String birthYear18 = IDCard.substring(6).substring(0, 4);//身份证上的年份
            String birthMonth18 = IDCard.substring(10).substring(0, 2);//身份证上的月份
            String birthDay18 = IDCard.substring(12).substring(0, 2);//身份证上的日
            String thisYear18 = format.format(date).substring(0, 4);//当前年份
            String thisMonth18 = format.format(date).substring(5, 7);//当前月份
            String toDay18 = format.format(date).substring(8, 10);//当前日
            if (Integer.parseInt(thisYear18) - Integer.parseInt(birthYear18) <= 0) {
                return age = 0;
            }

            if (Integer.parseInt(birthMonth18) < Integer.parseInt(thisMonth18)) {//7<9,已过，当前月份大于用户出身的月份表示已过生日
                age = Integer.parseInt(thisYear18) - Integer.parseInt(birthYear18);
            }
            if (Integer.parseInt(birthMonth18) == Integer.parseInt(thisMonth18)) {//9=9,当前月
                if (Integer.parseInt(birthDay18) < Integer.parseInt(toDay18)) {//生日小于当前日期,已过+1
                    age = Integer.parseInt(thisYear18) - Integer.parseInt(birthYear18);
                }
                if (Integer.parseInt(birthDay18) == Integer.parseInt(toDay18)) {//生日等于当前日期，今天过+1
                    age = Integer.parseInt(thisYear18) - Integer.parseInt(birthYear18);
                }
                if (Integer.parseInt(birthDay18) > Integer.parseInt(toDay18)) {//生日大于当前日期，未过
                    age = Integer.parseInt(thisYear18) - Integer.parseInt(birthYear18) - 1;
                }
            }
            if (Integer.parseInt(birthMonth18) > Integer.parseInt(thisMonth18)) {//9>7未过，当前用户还没过生日
                age = Integer.parseInt(thisYear18) - Integer.parseInt(birthYear18) - 1;
            }
        }
    }
    return age;
}

//获取出生日期  yyyy年MM月dd日
public static String getBirthday(String IDCard) {
    String birthday = "";
    String year = "";
    String month = "";
    String day = "";
    if (!TextUtils.isEmpty(IDCard)) {
        //15位身份证号
        if (IDCard.length() == FIFTEEN_ID_CARD) {
            // 身份证上的年份(15位身份证为1980年前的)
            year = "19" + IDCard.substring(6, 8);
            //身份证上的月份
            month = IDCard.substring(8, 10);
            //身份证上的日期
            day = IDCard.substring(10, 12);
            //18位身份证号
        } else if (IDCard.length() == EIGHTEEN_ID_CARD) {
            // 身份证上的年份
            year = IDCard.substring(6).substring(0, 4);
            // 身份证上的月份
            month = IDCard.substring(10).substring(0, 2);
            //身份证上的日期
            day = IDCard.substring(12).substring(0, 2);
        }
        birthday = year + "年" + month + "月" + day + "日";
    }
    return birthday;
}

//身份证验证,id号码内容 是否有效
public static boolean isValid(String id) {
    Boolean validResult = true;
    //校验长度只能为15或18
    int len = id.length();
    if (len != FIFTEEN_ID_CARD && len != EIGHTEEN_ID_CARD) {
        validResult = false;
        return validResult;
    }
    if (!validDate(id)) {
        validResult = false;
    }
    return validResult;
}

//校验生日
private static boolean validDate(String id) {
    try {
        String birth = id.length() == 15 ? "19" + id.substring(6, 12) : id.substring(6, 14);
        SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd");
        Date birthDate = sdf.parse(birth);
        if (!birth.equals(sdf.format(birthDate))) {
            return false;
        }
    } catch (ParseException e) {
        return false;
    }
    return true;
}

public static int getAge(String IDCard) {
    if (TextUtils.isEmpty(IDCard)) {
        return 0;
    }
    if (IDCard.length() == FIFTEEN_ID_CARD) {//15位身份证号
        birthDay = "19" + IDCard.substring(6, 12);// 身份证上的年份(15位身份证为1980年前的)
    } else if (IDCard.length() == EIGHTEEN_ID_CARD) {//18位身份证号
        birthDay = IDCard.substring(6, 14);
    }
    String time = new SimpleDateFormat("yyyy-MM-dd").format(new Date());
    String yearStr = time.split("-")[0];//以"-"为分割的第一个字符串，yyyy
    String monthStr = time.split("-")[1];
    String dayStr = time.split("-")[2];
    String yearBirthStr = birthDay.substring(0, 4);
    String monthBirthStr = birthDay.substring(4, 6);
    String dayBirthStr = birthDay.substring(6, 8);
    int year = Integer.valueOf(yearStr);
    int yearBirth = Integer.valueOf(yearBirthStr);
    int month = Integer.valueOf(monthStr);
    int monthBirth = Integer.valueOf(monthBirthStr);
    int day = Integer.valueOf(dayStr);
    int dayBirth = Integer.valueOf(dayBirthStr);
    if (year - yearBirth <= 0) {
        return 0;
    }
    int age = year - yearBirth;
    if (month - monthBirth > 0) {
        return age;
    }
    if (month - monthBirth < 0) {
        return --age;//自减1
    }
    if (day - dayBirth >= 0) {
        return age;
    }
    return --age;
}

public static int IdNOToAge(String IdNO) {
    int leh = IdNO.length();
    String dates = "";
    if (leh == 18) {
        int se = Integer.valueOf(IdNO.substring(leh - 1)) % 2;
        dates = IdNO.substring(6, 10);
        SimpleDateFormat df = new SimpleDateFormat("yyyy");
        String year = df.format(new Date());
        int u = Integer.parseInt(year) - Integer.parseInt(dates);
        return u;
    } else {
        dates = IdNO.substring(6, 8);
        return Integer.parseInt(dates);
    }
}

//
//
public static String getDesensitizedName(String realname) {
    String name = "";
    String Name = "";
    String month = "";
    name = realname.substring(realname.length() - 1, realname.length());
    Name = "**" + name;
    return Name;
}

//姓名脱敏  * 杨* 易*** 迪*********
public static String getDesensitizedNameXingEnd(String name) {
    String newname = "";
    if (name.length() <= 1) {
        //System.out.println("*");
        newname = "*";
    } else {
        newname = name.replaceAll("([\u4e00-\u9fa5]{1})(.*)", "$1" + createAsterisk(name.length() - 1));
    }
    return newname;
}

public static final int ONE = 1;
public static final int TWO = 2;

//姓名脱敏  杨 杨* 易**玺 迪********提
public static String getDesensitizedNameXingCenter(String realName) {
    if (realName == null) {
        return null;
    }
    if (realName.length() == ONE) {
        return realName;
    } else if (realName.length() == TWO) {
        return realName.substring(0, 1) + "*";
    } else {
        Integer length = realName.length();
        StringBuffer middle = new StringBuffer();
        for (int i = 0; i < realName.substring(1, length - 1).length(); i++) {
            middle.append("*");
        }
        return realName.substring(0, 1) + middle + realName.substring(length - 1, length);
    }
}

//姓名脱敏2 杨 *洋 ***玺 *********提
public static String getDesensitizedNameXingStart(String realName) {
    if (realName == null) {
        return null;
    }
    if (realName.length() == ONE) {
        return realName;
    } else if (realName.length() == TWO) {
        return "*" + realName.substring(1, realName.length());
    } else {
        Integer length = realName.length();
        StringBuffer middle = new StringBuffer();
        for (int i = 0; i < realName.substring(0, length - 1).length(); i++) {
            middle.append("*");
        }
        return middle + realName.substring(length - 1, length);
    }
}
//
//

//tvCardId.setText(cardid.replaceAll("(\d{12}|\d{18})(\d{3})", "***************$2"));

public static String getDesensitizedCardIdXingCenter(String IDCard) {
    String idCard = "";
    String id = "";
    if (!TextUtils.isEmpty(IDCard)) {
        //15位身份证号
        if (IDCard.length() == FIFTEEN_ID_CARD) {
            id = IDCard.replaceAll("(\d{4})\d{7}(\w{4})", "$1" + createAsterisk(7) + "$2");
            // id = IDCard.substring(12, IDCard.length());
            //18位身份证号
        } else if (IDCard.length() == EIGHTEEN_ID_CARD) {
            id = IDCard.replaceAll("(\d{4})\d{10}(\w{4})", "$1" + createAsterisk(10) + "$2");
            //id = IDCard.substring(15, IDCard.length());
        }
        idCard = id;
        //idCard.replaceAll("(\d{15})\d{3}","***************$2");
    }
    return idCard;
}

public static String getDesensitizedCardIdXingEnd(String IDCard) {
    String idCard = "";
    String id = "";
    if (!TextUtils.isEmpty(IDCard)) {
        //15位身份证号
        if (IDCard.length() == FIFTEEN_ID_CARD) {
            id = IDCard.substring(12, IDCard.length());
            //18位身份证号
        } else if (IDCard.length() == EIGHTEEN_ID_CARD) {
            id = IDCard.substring(15, IDCard.length());
        }
        idCard = "***************" + id;
        //idCard.replaceAll("(\d{15})\d{3}","***************$2");
    }
    return idCard;
}

//生成很多个*号
public static String createAsterisk(int length) {
    StringBuffer stringBuffer = new StringBuffer();
    for (int i = 0; i < length; i++) {
        stringBuffer.append("*");
    }
    return stringBuffer.toString();
}
//

//
//数字增加空格
public static String mainaaa(String args) {
    Scanner sc = new Scanner(args);
    StringBuilder str = new StringBuilder(sc.next());
    sc.close();
    //隔三个数字增加一个空格
    for (int i = 3; i <= str.length() - 1; i += 4) {
        str.insert(i, ' ');
    }
    return str.toString();
    //System.out.println(str.toString());
}

//千分位
public static String fmtMicrometer(String text) {
    DecimalFormat df = null;
    if (text.indexOf(".") > 0) {
        if (text.length() - text.indexOf(".") - 1 == 0) {
            df = new DecimalFormat("###,##0.");
        } else if (text.length() - text.indexOf(".") - 1 == 1) {
            df = new DecimalFormat("###,##0.0");
        } else {
            df = new DecimalFormat("###,##0.0000");
        }
    } else {
        df = new DecimalFormat("###,##0");
    }
    double number = 0.0;
    try {
        number = Double.parseDouble(text);
    } catch (Exception e) {
        number = 0.0;
    }
    String commaToSpace = df.format(number);//逗号替换成空格
    commaToSpace = commaToSpace.replace(',', ' ');
    return commaToSpace;
}
//

}