java代碼怎么寫？

import java.util.Calendar;

我們注重客戶提出的每個(gè)要求，我們充分考慮每一個(gè)細(xì)節(jié)，我們積極的做好成都做網(wǎng)站、成都網(wǎng)站設(shè)計(jì)服務(wù)，我們努力開拓更好的視野，通過不懈的努力，創(chuàng)新互聯(lián)建站贏得了業(yè)內(nèi)的良好聲譽(yù)，這一切，也不斷的激勵(lì)著我們更好的服務(wù)客戶。 主要業(yè)務(wù)：網(wǎng)站建設(shè),網(wǎng)站制作,網(wǎng)站設(shè)計(jì),小程序開發(fā),網(wǎng)站開發(fā),技術(shù)開發(fā)實(shí)力，DIV+CSS，PHP及ASP，ASP.Net，SQL數(shù)據(jù)庫的技術(shù)開發(fā)工程師。

//這是問題（1）的函數(shù)

public static Boolean isLegal(int year,int month,int day){

boolean run=false;

if(month1||month12||day1||day31) return false;

if((year%4==0)(year%100!=0)||(year%400==0)) //是否是閏年

run=true;

switch(month){

case 2:

if(run){

if(day29) return false;

}

else{

if(day28) return false;

}

break;

case 4:

case 6:

case 9:

case 11:if(day30) return false;

}

return true;

}

//這是第（2）問的代碼

Calendar cld = Calendar.getInstance();

cld.set(2009, 0,18);//月份是從0開始的

cld.set(Calendar.DAY_OF_YEAR, cld.get(Calendar.DAY_OF_YEAR)+365);

System.out.println(cld.getTime());

//結(jié)果是：Mon Jan 18 13:50:40 CST 2010

//下面是第三問的代碼

Calendar cld1 = Calendar.getInstance();

cld1.set(2009, 0,18);//月份是從0開始的

Calendar cld2 = Calendar.getInstance();

cld2.set(2008, 0,18);

long d=cld1.getTimeInMillis()-cld2.getTimeInMillis();

d=d/1000/60/60/24;

System.out.println(d);

//結(jié)果是366

Java編程（寫出程序代碼）

寫了一個(gè)代碼，代碼如下，可以進(jìn)行參考

public?class?sum?{

public?static?void?main(String[]?args)?{

//創(chuàng)建一個(gè)Scanner的對(duì)象input

Scanner?input?=?new?Scanner(System.in);?

//提示用戶輸入數(shù)據(jù)?

System.out.print("請輸入一個(gè)整數(shù)");

//將輸入的值賦給n

int?n?=?input.nextInt();

//定義變量接收計(jì)算后的和

int?sum?=?0;

//利用循環(huán)進(jìn)行求和

for?(int?i?=?0;?i?=?n;?i++)?{

sum+=i;

}

//輸出最后的和

System.out.println("從0一直到"+n+"的所有整數(shù)的和是:"+sum);

}

}

Java編程，填寫下面的代碼

class NoLowerLetterException extends Exception {

public NoLowerLetterException(String msg) {

super(msg);

}

}

class NoDigitException extends Exception {

public NoDigitException(String msg) {

super(msg);

}

}

class People {

void printLetter(char c) {

if (c = 'a' c = 'z') {

System.out.println(c);

} else {

try {

throw new NoLowerLetterException(String.valueOf(c));

} catch (NoLowerLetterException e) {

e.printStackTrace();

}

}

}

void printDigit(char c) {

if (c = '0' c = '9') {

System.out.println(c);

} else {

try {

throw new NoDigitException(String.valueOf(c));

} catch (NoDigitException e) {

e.printStackTrace();

}

}

}

}

public class ExceptionExample {

public static void main(String args[]) {

People people = new People();

for (int i = 0; i 128; i++) {

// 【代碼5】

// //將i轉(zhuǎn)換為char類型，執(zhí)行people.printLetter()方法，如果出現(xiàn)異常則捕獲，并輸出異常的錯(cuò)誤信息！

people.printLetter((char) i);

}

for (int i = 0; i 128; i++) {

// 【代碼6】 //將i轉(zhuǎn)換為char類型，執(zhí)行people. printDigit

// ()方法，如果出現(xiàn)異常則捕獲，并輸出異常的錯(cuò)誤信息！

people.printDigit((char) i);

}

}

}

用JAVA 幫忙寫下代碼，編程

Media類：

import java.util.Scanner;

/**

* @author Administrator

*

*/

public class Media {

private String name;

private String author;

private String publish;

private double price;

/**

* @throws Exception

*/

public Media() throws Exception

{

@SuppressWarnings("resource")

Scanner scanner = new Scanner(System.in);

System.out.println("請輸入名稱：");

setName(scanner.nextLine());

System.out.println("請輸入作者：");

setAuthor(scanner.nextLine());

System.out.println("請輸入出版社：");

setPublish(scanner.nextLine());

System.out.println("請輸入價(jià)格：");

setPrice(scanner.nextDouble());

scanner.close();

}

/**

* @return the name

*/

public String getName() {

return name;

}

/**

* @param name the name to set

*/

public void setName(String name) {

this.name = name;

}

/**

* @return the author

*/

public String getAuthor() {

return author;

}

/**

* @param author the author to set

*/

public void setAuthor(String author) {

this.author = author;

}

/**

* @return the publish

*/

public String getPublish() {

return publish;

}

/**

* @param publish the publish to set

*/

public void setPublish(String publish) {

this.publish = publish;

}

/**

* @return the price

*/

public double getPrice() {

return price;

}

/**

* @param price the price to set

*/

public void setPrice(double price) {

this.price = price;

}

}

public class Book extends Media {

/**

* @throws Exception

*

*/

public Book() throws Exception{

super();

System.out.println("I am a book!");

}

}

public class Cd extends Media {

/**

*

* @throws Exception

*/

public Cd() throws Exception{

super();

System.out.println("I am a cd!");

}

}

java 編程

class Printer {

public String type;

public String manner;

public Printer(){};

public Printer(String type,String manner){

this.type=type;

this.manner=manner;

}

public void startup(){

System.out.println("啟動(dòng)普通打印機(jī)");

}

public void print(){

System.out.println("普通打印機(jī)打印");

}

}

class LaserPrinter extends Printer{

public void print(){

System.out.println("激光打印機(jī)打印");

}

public void close(){

System.out.println("激光打印機(jī)關(guān)閉");

}

}

public class Test{

public static void main(String[] args){

Printer p1=new Printer();

Printer p2=new Printer("123","方式1");

p1.startup();

p1.print();

LaserPrinter j1= new LaserPrinter();

j1.startup();

j1.print();

j1.close();

}

}

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