Java中巧算年龄的代码 java中巧算年龄的代码怎么写

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用java实现年龄计算器,就是在界面上输入一个人出生年月日(yyyy-mm-dd),显示现在多少岁,假设一年有365天

这是一段javascript写的，无论是java或javascript原理都一样，进攻参考

!-- Begin

function run() {

with (document.agecalc) {

dd = parseInt(day.selectedIndex) + 1;

mm = parseInt(month.selectedIndex) + 1;

yy = year.value;

if (yy.length != 4 || isNaN(yy)) {

document.agecalc.timealive.value = "请输入4位数的年份.";

document.agecalc.year.select();

document.agecalc.year.focus();

return;

}

days = new Date();

gdate = days.getDate();

gmonth = days.getMonth();

gyear = days.getYear();

if (gyear 2000) gyear += 1900;

age = gyear - yy;

if ((mm == (gmonth + 1)) (dd = parseInt(gdate))) {

age = age;

} else {

if (mm = (gmonth)) {

age = age;

} else {

age = age - 1;

}

if (age == 0)

age = age;

document.agecalc.timealive.value = "你已经满了 " + age+ " 周岁 . . .\n\n";

if (mm = (gmonth + 1))

age = age - 1;

if ((mm == (gmonth + 1)) (dd parseInt(gdate)))

age = age + 1;

var m;

var n;

if (mm == 12) n = 31 - dd;

if (mm == 11) n = 61 - dd;

if (mm == 10) n = 92 - dd;

if (mm == 9) n = 122 - dd;

if (mm == 8) n = 153 - dd;

if (mm == 7) n = 184 - dd;

if (mm == 6) n = 214 - dd;

if (mm == 5) n = 245 - dd;

if (mm == 4) n = 275 - dd;

if (mm == 3) n = 306 - dd;

if (mm == 2) { n = 334 - dd; if (leapyear(yy)) n++; }

if (mm == 1) { n = 365 - dd; if (leapyear(yy)) n++; }

if (gmonth == 1) m = 31;

if (gmonth == 2) {

m = 59;

if (leapyear(gyear)) m++;

}

if (gmonth == 3) { m = 90; if (leapyear(gyear)) m++; }

if (gmonth == 4) { m = 120; if (leapyear(gyear)) m++; }

if (gmonth == 5) { m = 151; if (leapyear(gyear)) m++; }

if (gmonth == 6) { m = 181; if (leapyear(gyear)) m++; }

if (gmonth == 7) { m = 212; if (leapyear(gyear)) m++; }

if (gmonth == 8) { m = 243; if (leapyear(gyear)) m++; }

if (gmonth == 9) { m = 273; if (leapyear(gyear)) m++; }

if (gmonth == 10) { m = 304; if (leapyear(gyear)) m++; }

if (gmonth == 11) { m = 334; if (leapyear(gyear)) m++; }

if (gmonth == 12) { m = 365; if (leapyear(gyear)) m++; }

months = age * 12;

months += 12 - parseInt(mm);

months += gmonth;

totdays = (parseInt(age) * 365);

totdays += age / 4;

totdays = parseInt(totdays) + gdate + m + n;

if (gmonth == 1) p = 31 + gdate;

if (gmonth == 2) {

p = 59 + gdate;

if (leapyear(gyear)) m = m+1;

}

if (gmonth == 3) { p = 90 + gdate; if (leapyear(gyear)) p++; }

if (gmonth == 4) { p = 120 + gdate; if (leapyear(gyear)) p++; }

if (gmonth == 5) { p = 151 + gdate; if (leapyear(gyear)) p++; }

if (gmonth == 6) { p = 181 + gdate; if (leapyear(gyear)) p++; }

if (gmonth == 7) { p = 212 + gdate; if (leapyear(gyear)) p++; }

if (gmonth == 8) { p = 243 + gdate; if (leapyear(gyear)) p++; }

if (gmonth == 9) { p = 273 + gdate; if (leapyear(gyear)) p++; }

if (gmonth == 10) { p = 304 + gdate; if (leapyear(gyear)) p++; }

if (gmonth == 11) { p = 334 + gdate; if (leapyear(gyear)) p++; }

if (gmonth == 12) { p = 365 + gdate; if (leapyear(gyear)) p++; }

weeks = (age * 365) + n + p;

weeks = weeks / 7;

etcdays = parseFloat(weeks) - parseInt(weeks);

etcdays = Math.round(etcdays * 7);

weeks = parseInt(weeks);

etcdays += parseInt(age / 4);

if (etcdays 7)

weeks += parseInt(etcdays / 7);

document.agecalc.timealive.value += " 或 " + months + " 月龄\n";

document.agecalc.timealive.value += " 或 " + weeks + " 周龄\n";

document.agecalc.timealive.value += " 或 " + totdays + " 日龄\n";

var time = new Date();

ghour = time.getHours();

gmin = time.getMinutes();

gsec = time.getSeconds();

hour = ((age * 365) + n + p) * 24;

hour += (parseInt(age / 4) * 24);

document.agecalc.timealive.value += " 或 " + hour + " 小时\n";

var min = (hour * 60) + gmin;

document.agecalc.timealive.value += " 或 " + min + " 分钟\n";

sec = (min * 60) + gsec;

document.agecalc.timealive.value += " 或 " + sec + " 秒钟";

mm = mm - 1;

var r;

if (mm == 0) r = 0;

if (mm == 1) r = 31;

if (mm == 2) { r = 59; if (leapyear(gyear)) m++; }

if (mm == 3) { r = 90; if (leapyear(gyear)) r++; }

if (mm == 4) { r = 120; if (leapyear(gyear)) r++; }

if (mm == 5) { r = 151; if (leapyear(gyear)) r++; }

if (mm == 6) { r = 181; if (leapyear(gyear)) r++; }

if (mm == 7) { r = 212; if (leapyear(gyear)) r++; }

if (mm == 8) { r = 243; if (leapyear(gyear)) r++; }

if (mm == 9) { r = 273; if (leapyear(gyear)) r++; }

if (mm == 10) { r = 304; if (leapyear(gyear)) r++; }

if (mm == 11) { r = 334; if (leapyear(gyear)) r++; }

mm = mm + 1;

r = parseInt(r) + parseInt(dd);

if ((mm = (gmonth + 1)) (dd gdate)) {

bday = r - m - gdate;

}

else {

if ((leapyear(gyear)) ((mm 2) (dd 29))) {

a = 366;

} else {

a = 365;

}

bday = a + (r - m - gdate);

}

nhour = 24 - parseInt(ghour);

nmin = 60 - parseInt(gmin);

nsec = 60 - parseInt(gsec);

while (bday 366) bday -= 365;

if (((bday == 366) (leapyear(gyear)) || ((bday == 365) (!leapyear(gyear))))) {

document.agecalc.timealive.value += "\n\nSenlon祝贺您！今天是你的生日！祝你生日快乐！";

} else {

document.agecalc.timealive.value += "\n\n另外，你下一个生日距今还有：\n"

+ bday + " 天 " + nhour + " 小时 " + nmin + " 分 " + nsec + " 秒";

setTimeout("run()", 1000);

}

function leapyear(a) {

if (((a%4 == 0) (a%100 != 0)) || (a%400 == 0))

return true;

else

return false;

}

// End --

来自

相关问答

Q1: java计算年龄

import java.util.Calendar;

import java.util.Date;

import java.awt.*;

import java.awt.event.*;

import java.text.NumberFormat;

public class H {

public static void main(String args[]) {

new Time("年龄计算器");

}

class Time extends Frame implements ActionListener {

Calendar calendar;

Button button;

TextField t1, t2, t3;

Label l, l1, l2, l3;

Time(String s) {

super(s);

setLayout(new FlowLayout());

button = new Button("确定");

button.addActionListener(this);

t1 = new TextField(2);

t2 = new TextField(2);

t3 = new TextField(2);

l = new Label(" 请输入您Java中巧算年龄的代码的生日 ");

l.setBackground(Color.cyan);

l1 = new Label("年");

l2 = new Label("月");

l3 = new Label("日");

add(l);

add(t1);

add(l1);

add(t2);

add(l2);

add(t3);

add(l3);

add(button);

setBounds(100, 100, 280, 100);

addWindowListener(new WindowAdapter() {

public void windowClosing(WindowEvent e) {

System.exit(0);

}

});

setVisible(true);

validate();

}

public void actionPerformed(ActionEvent e) {

calendar = Calendar.getInstance();

calendar.setTime(new Date());

NumberFormat f = NumberFormat.getInstance();

long time = calendar.getTimeInMillis();

if (e.getSource() == button) {

try {

int n = Integer.parseInt(t1.getText());

int y = Integer.parseInt(t2.getText());

int r = Integer.parseInt(t3.getText());

calendar.set(n, y - 1, r);

double time1 = calendar.getTimeInMillis();

double c = (time - time1) / (1000 * 60 * 60 * 24);

double d = c/365;

f.setMaximumFractionDigits(2);

String s = f.format(d);

l.setText("您Java中巧算年龄的代码的年龄约为" + s + " 岁");

} catch (NumberFormatException ee) {

l.setText("请正确输入");

}

功底浅薄Java中巧算年龄的代码，如果有问题Java中巧算年龄的代码，还望指教。

Q2: 在java中，根据年龄，计算出生年份。比如：23岁，1990年出生

这个得用Calendar类

首先获取现在的日期 Calendar mycalendar=Calendar.getInstance();//获取现在时间

String 年=String.valueOf(mycalendar.get(Calendar.YEAR));//获取年份

// 用文本框输入年龄

int age=text1.getText().parseInt();

int birth=年.parseInt()-age;

System.out.println("birth"年出生）;

Q3: java求一个比较用户年龄大小的程序

import java.util.Scanner;

public class Test {

private static Scanner in = null;

public static String getName(){

String name = "";

in = new Scanner(System.in);

System.out.println("Entername : ");

name = in.nextLine();

return name;

}

public static int getAge(){

int age = 0;

in = new Scanner(System.in);

System.out.println("Enterage : ");

age = in.nextInt();

return age;

}

public static int compareAge( int age1 , int age2){

return age1 - age2;

}

public static void main(String[] args) {

String nameA = getName();

int ageA = getAge();

String nameB = getName();

int ageB = getAge();

int compare = compareAge(ageA,ageB);

if( compare 0 ){

System.out.println( nameA +" is order than " + nameB + " by " + compare + "year");

}else if( compare 0 ){

System.out.println(nameA +" is younger than " + nameB + " by " + compareAge(ageB,ageA) + " year");

}

Q4: 编写一个JAVA程序输入自己的姓名和年龄并输出怎么写

在main里写

String name;

String age;

Scanner sc=new Scanner(System.in);

System.out.println("输入姓名");

name=sc.nextLine();

System.out.println("输入年龄");

age=sc.nextLine();

System.out.println("姓名"+name);

System.out.println("年龄"+age);

sc.close();

扩展资料：

JAVA程序的语言特点：

1.简单性

Java看起来设计得很像C++，但是为了使语言小和容易熟悉，设计者们把C++语言中许多可用的特征去掉了，这些特征是一般程序员很少使用的。例如，Java不支持go to语句，代之以提供break和continue语句以及异常处理。

Java还剔除了C++的操作符过载（overload）和多继承特征，并且不使用主文件，免去了预处理程序。因为Java没有结构，数组和串都是对象，所以不需要指针。

Java能够自动处理对象的引用和间接引用，实现自动的无用单元收集，使用户不必为存储管理问题烦恼，能更多的时间和精力花在研发上。

2.面向对象

Java是一个面向对象的语言。对程序员来说，这意味着要注意应中的数据和操纵数据的方法（method），而不是严格地用过程来思考。在一个面向对象的系统中，类（class）是数据和操作数据的方法的集合。

数据和方法一起描述对象（object）的状态和行为。每一对象是其状态和行为的封装。类是按一定体系和层次安排的，使得子类可以从超类继承行为。在这个类层次体系中有一个根类，它是具有一般行为的类。Java程序是用类来组织的。

Q5: 用java写用户在控制台按照“yyyy/mm/dd”的格式输入出生日期，请计算用户的年龄

年龄就是把当前Java中巧算年龄的代码的年份与用户的年份相减得到一个对象值1。然后将用户输入日期中的年份换成当年的Java中巧算年龄的代码，组成一个新的日期Java中巧算年龄的代码，将这新的日期与当天的日期进行比较，得到另一个对象值2。这个对象值2就是距离用户的生日的天数。这天数是正，那对象值1就是用户的年龄，是负把对象值+1就好。参考两日期之间的天数差方法Java中巧算年龄的代码：

public static int getDiffDay(String firstString, String secondString) {

SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");

Date firstDate = null;

Date secondDate = null;

try {

firstDate = df.parse(firstString);

secondDate = df.parse(secondString);

} catch (Exception e) {

// 日期型字符串格式错误

}

int nDay = (int) ((secondDate.getTime() - firstDate.getTime()) / (24 * 60 * 60 * 1000));

return nDay;