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java记账小程序代码 记账小程序源码
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谁能给个JAVA的小程序代码，越小越好！
这是java记账小程序代码我晓得java记账小程序代码的最简单的java小程序代码了你可以看看:
package com.kenki.emp;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
import java.sql.SQLException;
import java.sql.*;
public class emp extends HttpServlet {
private static final String CONTENT_TYPE = "text/html; charset=GBK";
//Initialize global variables
public void init() throws ServletException {
}
//Process the HTTP Get request
public void doGet(HttpServletRequest request, HttpServletResponse response) throws
ServletException, IOException {
response.setContentType(CONTENT_TYPE);
PrintWriter out = response.getWriter();
String code = request.getParameter("code");
String name = request.getParameter("name");
String pay = request.getParameter("pay");
System.out.println("empcode:" + code);
System.out.println("name:" + name);
System.out.println("pay:" + pay);
//创建驱动
new com.microsoft.jdbc.sqlserver.SQLServerDriver();
String strd =
"jdbc:microsoft:sqlserver://localhost:1433;databasename=emp_dates";
String username = "sa";
String pws = "";
try {
java.sql.Connection conn = java.sql.DriverManager.getConnection(
strd, username, pws);
String strs = "insert into emp values(?,?,?)";
java.sql.PreparedStatement pre = conn.prepareStatement(strs);
pre.setString(1, code);
pre.setString(2, name);
pre.setString(3, pay);
pre.execute();
pre.close();
conn.close();
//重定向至查询页面
out.println("成功保存！！");
response.sendRedirect("emp.html");
} catch (SQLException ss) {
ss.printStackTrace();
response.sendRedirect("/WebModule1/error.html");
}
}
//Process the HTTP Post request
public void doPost(HttpServletRequest request, HttpServletResponse response) throws
ServletException, IOException {
doGet(request, response);
}
//Clean up resources
public void destroy() {
}
}
相关问答
Q1: java小程序设计求代码
Account类：
package Test;
import java.util.HashMap;
import java.util.Map;
public class Account {
private String cardId;//卡号
private String name;//姓名
private String password;//密码
private long leftAmt;//剩余金额
public MapObject, ObjectgetAccountInfo(String id){
//这里暂设一个用户信息
//实际要建一个数据库存放多个用户的信息
MapObject, Object map = new HashMapObject, Object();
map.put("cardId", "123");
map.put("name", "qwe");
map.put("password", "789");
map.put("leftAmt", 88);
//实际要通过sql语句在数据库中查询id对应的账户信息
if(id == "123"){
//这里没有考虑密码，全部返回
return map;
}
return null;
}
public void setCardId(String cardId) {
this.cardId = cardId;
}
public String getCardId() {
return cardId;
}
public void setName(String name) {
this.name = name;
}
public String getName() {
return name;
}
public void setPassword(String password) {
this.password = password;
}
public String getPassword() {
return password;
}
public void setLeftAmt(long leftAmt) {
this.leftAmt = leftAmt;
}
public long getLeftAmt() {
return leftAmt;
}
}
userOperate类：
package Test;
import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;
public class UserOperate {
Account account = new Account();
public void operate(String id){
System.out.println("欢迎您使用ATM系统");
System.out.println("1--存款 2--查询");
System.out.println("3--取款 0--退出");
System.out.println("请选择操作类型【0-3】");
Scanner in = new Scanner(System.in);
int type = in.nextInt();
while(type!=0){
if(type==1){
System.out.println("请存入钞票");
type = in.nextInt();
}else
if(type==2){
System.out.println("您的银行账户信息为：");
MapObject, Object map = new HashMapObject, Object();
map = account.getAccountInfo(id);
System.out.println(map);
type = in.nextInt();
}else
if(type==3){
System.out.println("请取走您的钞票");
type = in.nextInt();
}else{
System.out.println("操作有误，请重新操作");
type = in.nextInt();
}
}
System.out.println("请尽快取走您的卡，谢谢使用！再见！");
in.close();
}
}
测试类（我放在main里）：
package Test;
public class test1 {
public static void main(String[] args){
//测试
UserOperate userOperate = new UserOperate();
//假设银行卡插入后读取到的id为123
String id = "123";
userOperate.operate(id);
}
}
运行结果：
这是很简单的一个思路，简单跑跑可以。
也不知道你要什么样的结果，如果是要一个完整的系统，那具体还得建立数据库，还有如何读取账户信息，等等。
Q2: JAVA小程序编写
1.JavaPow.java
import java.util.Scanner;
public class JavaPow {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.print("请输入一个数求平方:");
double num = sc.nextDouble();
System.out.println(num + "的平方结果是:" + Math.pow(num, 2));
}
}
2.CompareTest.java
public class CompareTest {
public static void main(String[] args) {
int a = 10, b = 8;
if(ab){
System.out.println("排序结果是:"+b+"\t"+a);
}else{
System.out.println("排序结果是:"+a+"\t"+b);
}
}
}
3.RateMoney.java
import java.util.Scanner;
public class RateMoney {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
double money=0;
double rate=0;
System.out.print("请输入汇款金额：");
money=sc.nextDouble();
if(money0){
rate=0;
}
else if(money0money=100){
rate=1;
}else if(money100money=5000){
rate=money/100;
}else{
rate=50;
}
System.out.println("汇"+money+"元钱需汇款费："+rate+"元");
}
}
三个都已经写出来了..
你好好看看吧!!
祝你早日成功!
Q3: 急求大神发几个java 300行代码的小程序 简单点的
/**
* 文件名：Operation.java 2014-1-2 下午3:06:37
* @author Administrator
*/
package cc.icoc.javaxu.action;
import java.util.ArrayList;
import java.util.Scanner;
import cc.icoc.javaxu.datas.StudentInfo;
/**
* @author 许仕永
* 创建时间: 2014 2014-1-2 下午3:06:37
*/
public class Operation
{
int stuNo,stuAge;
String stuName,stuClass,stuSex;
ArrayListStudentInfo list;
/**程序入口
* @param args
*/
public static void main(String[] args)
{
// TODO Auto-generated method stub
new Operation().operation();
}
private int inputInt()
{
Scanner scanner = new Scanner(System.in);
return scanner.nextInt();
}
private String inputStr()
{
Scanner scanner = new Scanner(System.in);
return scanner.nextLine();
}
private void operation()
{
// TODO Auto-generated method stub
if(list == null)
{
list = new ArrayListStudentInfo();
}
while(true)
{
System.out.println("\t\t\t学生信息管理系统\n");
System.out.println("1.信息查阅");
System.out.println("2.信息查询");
System.out.println("3.信息录入");
System.out.println("4.退出系统");
int what = inputInt();
if ( what == 1 )
{
getInfo();
} else if ( what == 2 )
{
allSerach();
} else if ( what == 3 )
{
inputInfo();
} else if( what == 4 )
{
System.out.println("已经退出系统");
System.exit(0);
}
}
}
/**
* 获取全部学生的信息列表
*/
private void getInfo()
{
if(!list.isEmpty())
{
for ( int i = 0; i list.size(); i++ )
{
System.out.println(list.get(i));
}
}
}
/**
* 执行查找
*/
private void allSerach()
{
System.out.println("1.输入学号进行查询");
System.out.println("2.输入姓名进行查询");
int what = inputInt();
if(what == 1)
{
System.out.println("请输入学号：");
search(inputInt());
}
else
{
System.out.println("请输入姓名：");
search(inputStr());
}
}
/**
* 按学生姓名查询学生信息
* @param name 学生姓名
*/
private StudentInfo search(String name)
{
for ( int i = 0; i list.size(); i++ )
{
if(list.get(i).getStuName().equals(name))
{
System.out.println(list.get(i));
return list.get(i);
}
}
System.out.println("未查询到该名字的学生");
return null;
}
/**
* 按学号查询学生信息
* @param id 学号
*/
private StudentInfo search(int id)
{
for ( int i = 0; i list.size(); i++ )
{
if(list.get(i).getStuNo()==id)
{
System.out.println(list.get(i));
return list.get(i);
}
}
System.out.println("未查询到该学号的学生");
return null;
}
/**
* 录入学生信息
*/
private void inputInfo()
{
try
{
System.out.print("请输入学生学号：\n");
stuNo = inputInt();
System.out.print("请输入学生姓名：\n");
stuName = inputStr();
System.out.print("请输入学生性别：\n");
stuSex = inputStr();
System.out.print("请输入学生年龄：\n");
stuAge = inputInt();
System.out.print("请输入学生班级：\n");
stuClass = inputStr();
list.add(new StudentInfo(stuNo, stuAge, stuName, stuSex, stuClass));
} catch (Exception e)
{
// TODO: handle exception
System.out.println("不允许为空，请重新输入");
}
}
}
package cc.icoc.javaxu.action;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
public class Stu
{
int countStu = 0;
int sum = 0;
int avg = 0;
ListStuBean list = new ArrayListStu.StuBean();
public static void main(String[] args)
{
new Stu().go();
}
private void go()
{
A:while(true)
{
//构造实体Bean来存储学生成绩
StuBean bean = new StuBean();
System.out.println("请输入成绩：");
System.out.println("语文：");
bean.setYuwen(scanner());
System.out.println("数学：");
bean.setMath(scanner());
//获取英语成绩
System.out.println("英语：");
bean.setEnglish(scanner());
//存入容器
list.add(bean);
for ( int i = 0; i list.size(); i++ )
{
sum += list.get(i).english+list.get(i).math+list.get(i).yuwen;
}
avg = sum / (3*list.size());
System.out.println("当前有"+list.size()+"条学生记录，所有学生总分="+sum+"平均分为"+avg);
//输入y继续录入学生信息，输入x退出
System.out.println("\n已成功录入一个学生的数据，是否继续/退出(y/x)");
if("x".equals(scannerString()))
break A;
}
}
/**输入*/
private int scanner()
{
Scanner scanner = new Scanner(System.in);
return scanner.nextInt();
}
/**输入*/
private String scannerString()
{
Scanner scanner = new Scanner(System.in);
return scanner.nextLine();
}
class StuBean
{
int math;
int yuwen;
int english;
public int getMath()
{
return math;
}
public void setMath(int math)
{
this.math = math;
}
public int getYuwen()
{
return yuwen;
}
public void setYuwen(int yuwen)
{
this.yuwen = yuwen;
}
public int getEnglish()
{
return english;
}
public void setEnglish(int english)
{
this.english = english;
}
}
}
/**
* 文件名：StudentInfo.java 2014-1-2 下午3:07:29
* @author Administrator
*/
package cc.icoc.javaxu.datas;
/**
* @author 许仕永
* 创建时间: 2014 2014-1-2 下午3:07:29
*/
public class StudentInfo
{
int stuNo,stuAge;
String stuName,stuSex,stuClass;
public StudentInfo(int stuNo, int stuAge, String stuName, String stuSex, String stuClass)
{
super();
this.stuNo = stuNo;
this.stuAge = stuAge;
this.stuName = stuName;
this.stuSex = stuSex;
this.stuClass = stuClass;
}
public int getStuNo()
{
return stuNo;
}
public void setStuNo(int stuNo)
{
this.stuNo = stuNo;
}
public int getStuAge()
{
return stuAge;
}
public void setStuAge(int stuAge)
{
this.stuAge = stuAge;
}
public String getStuName()
{
return stuName;
}
public void setStuName(String stuName)
{
this.stuName = stuName;
}
public String getStuSex()
{
return stuSex;
}
public void setStuSex(String stuSex)
{
this.stuSex = stuSex;
}
public String getStuClass()
{
return stuClass;
}
public void setStuClass(String stuClass)
{
this.stuClass = stuClass;
}
@Override
public String toString()
{
// TODO Auto-generated method stub
String s = "学号："+getStuNo()+"\t姓名："+getStuName()+" \t性别："+getStuSex()+"\t年龄："+getStuAge()+"\t班级："+getStuClass();
return s;
}
}
Q4: 哪位高手帮写个JAVA入门小程序，估计就几十行代码
//第一题:
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
import java.util.ArrayList;
import java.util.List;
public class ManageName {
ListString namelist = new ArrayListString();
public void PrintMenu() {
System.out.println("\n\r1.Add new name " + "2.Display all name"
+ " 3.Quit"
+ "\nPlease select menu(1,2,3)");
}
public void displayname() {
for (int w = 0; w this.namelist.size(); w++) {
System.out.println("Name" + w+":" + this.namelist.get(w));
}
}
public List addName(String name) {
namelist.add(name);
return namelist;
}
public static void main(String[] args) throws IOException {
ManageName a = new ManageName();
a.addName("jing5083394");
BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
while (true) {
a.PrintMenu();
String content = in.readLine();
if (content.equalsIgnoreCase("3")) {
break;
} else if (content.equalsIgnoreCase("1")) {
String name;
BufferedReader in2 = new BufferedReader(new InputStreamReader(
System.in));
System.out.println("Please input the Name to add new user");
String content2 = in.readLine();
name = content2;
a.addName(name);
System.out.println("Add name successfully\r\n");
}
else if (content.equalsIgnoreCase("2")) {
a.displayname();
}
else {
System.out.println("Invalid selections!\n");
}
}
}
}
//第二题: 把文件放到namefile.txt
/*
* 从namefile.txt文件中读入的字符串全部转换成大写字母，
* 再按原来的顺序输出到yoursData.txt文件中。
*/
import java.lang.Character;
import java.io.*;
//将一个文件复制到另一个文件中（覆盖）
public class Filestream {
public static void main(String args[]) {
try {
File inFile = new File("c:\\namefile.txt");
File outFile = new File("c:\\yoursData.txt");
FileInputStream fis = new FileInputStream(inFile); // 读输入文件
FileOutputStream fos = new FileOutputStream(outFile);
int c;
while ((c = fis.read()) != -1) {
c = Character.toUpperCase(c);
fos.write(c);
}// 写入文件中
System.out.println("Output file finish");
fis.close();
fos.close();
} catch (FileNotFoundException e) {
System.out.println("FileStreamsTest: " + e);
} catch (IOException e) {
System.err.println("FileStreamsTest: " + e);
}
}
}
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