java报表系统源码
① java绋嫔簭璁捐★纴澶氭佸湪宸ヨ祫绯荤粺涓镄勫簲鐢ㄣ傝峰皢銆愪唬镰佷竴銆戝埌銆愪唬镰佸叚銆戠敤涓筼ava婧愪唬镰佸~鍐
浠g爜涓锛
private Double weeklySalary;
浠g爜浜岋细
public void setWeeklySalary(Double weeklySalary){
this.weeklySalary=weeklySalary;
}
浠g爜涓夛细
private Double salary;
private Integer piece;
public PieceWorker (String name,Integer p,Double s) {
super(name);
setSalary(s);
setPiece(p);
}
public void setPiece(Integer p){
this.piece=p;
}
public void setSalary(Double s){
this.salary=s;
}
public double earnings() {
return piece*salary;
}
浠g爜锲涳细
private Double salary;
private Integer hour;
public PieceWorker (String name,Integer h,Double s) {
super(name);
setSalary(s);
setHour(h);
}
public void setHour(Integer h){
this.hour=h;
}
public void setSalary(Double s){
this.salary=s;
}
public double earnings() {
return h*salary;
}
② Shark(鲨鱼记账系统)–附源码
Shark(鲨鱼记账系统)–附源码
package com.shayu.note;
import java.util.Scanner;
public class SharkSystem {
// //下面开始循环
while (flag) {
//或蔽开机界面
System.out.println("-----欢迎使用鲨鱼记账系统-----");
System.out.println("1,收支明细");
System.out.println("2,登记收入");
System.out.println("3,登记支出");
System.out.println("4,退出系统");
System.out.println("请按照提衫郑州示选择你要使丛孝用的的功能--");
Scanner scanner = new Scanner(System.in);//判断用户输入是否符合要求
int choice = scanner.nextInt();//选择
//检测用户输入的数据并返回相应的请求结果
while (choice != 1 & choice != 2 & choice != 3 & choice != 4) {
System.out.println("请重新输入--");
int newchoice = scanner.nextInt();
choice = newchoice;
}
}
package com.shayu.note;
import java.util.Scanner;
//鲨鱼记账系统
public class Shark {
public static void main(String[] args) {
SharkSystem shark=new SharkSystem();
shark.StartSystem();
}
}
③ java瀛︾敓鎴愮哗绠$悊绯荤粺
Java瀛︾敓鎴愮哗绠$悊绯荤粺婧愪唬镰侊细
import Java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.io.StringReader;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.StringTokenizer;
/*
* Created on 2005-1-11
*/
/**
* @author 璁╃倻
* @since 1.0
*
* TODO 瀛︾敓鎴愮哗娌荤悊绯荤粺
* 阃氲繃瀛﹀彿镆ユ垒,淇鏀,鍒犻櫎鏁版嵁
*
*/
public class LittleProgram
{
static boolean isDelete = true;
static boolean isFind = true;
public static void main(String [] args)//涓绘柟娉,绋嫔簭浠庤繖閲屽紑濮嬭繍琛
throws IOException,NumberNotFoundException
{
int choice=-1;
do{
LittleProgram lp = new LittleProgram();
System.out.println();
System.out.println("\t####################################");
System.out.println();
System.out.println("\t\t Java瀛︾敓鎴愮哗娌荤悊绯荤粺1.1");
System.out.println("\t\t璇风敤瀛﹀彿镆ユ垒,淇鏀,鍒犻櫎鏁版嵁");
System.out.println();
System.out.println("\t####################################\n");
System.out.print("1.澧炲姞鏁版嵁:\n"+
"2.镆ユ垒鏁版嵁:\n"+
"3.鍒犻櫎鏁版嵁:\n"+
"4.娓呴櫎镓链夋暟鎹:\n"+
"5.鎶婃暟鎹鍏ㄩ儴镓揿嵃鍒板睆骞\n"+
"6.鎶婃垚缁╂寜瀛﹀彿鎺掑簭\n"+
"7.淇鏀规暟鎹\n"+
"8.缁熻″凡璁板綍鎴愮哗瀛︾敓鏁\n"+
"9.鍏充簬浣滆\n"+
"0.阃鍑虹▼搴.\n" +
"杈揿叆:");
BufferedReader in = //浠庣粓
new BufferedReader( //绔鎺
new InputStreamReader(System.in));//鏀舵暟
String inputLine = in.readLine(); //瀛楅
choice= Integer.valueOf(inputLine).intValue();//椤;
switch(choice)
{
case 1: {//1.澧炲姞鏁版嵁
String str = lp.inputData();
lp.addData(str);
System.out.println("澧炲姞鏁版嵁鎴愬姛.");
timeOut(1);
}break;
case 2: {//2.镆ユ垒鏁版嵁
long find = 0;
璧勬枡寮旷敤:http://www.knowsky.com/363450.html
④ java如何查看源码
不会就别那么肯定的说看不到~
jdk里有个src.zip,解压以后放在jre里ok
如果不行,在eclipse里建立一个叫jre的文件夹,然后把jre6里的东西考进去,把src考进去,必须行。
⑤ 急求java学生信息管理系统源代码,带有连接数据库的,万分感谢
import java.awt.BorderLayout;
import java.awt.CardLayout;
import java.awt.Container;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import javax.swing.JToolBar;
import javax.swing.SwingConstants;
public class MainFrame extends JFrame implements ActionListener{
InsertPanel ip = null;
SelectPanel sp = null;
JPanel pframe;
JButton jb1,jb2,jb3;
JMenuItem jm11,jm21,jm22,jm23,jm31,jm32,jm41,jm42;
CardLayout clayout;
public MainFrame(String s){
super(s);
JMenuBar mb = new JMenuBar();
this.setJMenuBar(mb);
JMenu m1 = new JMenu("系统");
JMenu m2 = new JMenu("基本信息");
JMenu m3 = new JMenu("成绩");
JMenu m4 = new JMenu("奖惩");
mb.add(m1);
mb.add(m2);
mb.add(m3);
mb.add(m4);
jm11 = new JMenuItem("退出系统");
jm21 = new JMenuItem("输入");
jm22 = new JMenuItem("查询");
jm23 = new JMenuItem("更改");
jm31 = new JMenuItem("输入成绩");
jm32 = new JMenuItem("查询成绩");
jm41 = new JMenuItem("奖励");
jm42 = new JMenuItem("处分");
m1.add(jm11);
m2.add(jm21);
m2.add(jm22);
m2.add(jm23);
m3.add(jm31);
m3.add(jm32);
m4.add(jm41);
m4.add(jm42);
Icon i1 = new ImageIcon();
Icon i2 = new ImageIcon();
Icon i3 = new ImageIcon();
jb1 = new JButton(i1);
jb1.setToolTipText("输入");
jb2 = new JButton(i2);
jb2.setToolTipText("查询");
jb3 = new JButton(i3);
jb3.setToolTipText("退出");
JToolBar tb = new JToolBar("系统工具");
tb.add(jb1);
tb.add(jb2);
tb.add(jb3);
add(tb,BorderLayout.NORTH);
jm11.addActionListener(this);
jm21.addActionListener(this);
jm22.addActionListener(this);
jb1.addActionListener(this);
jb2.addActionListener(this);
jb3.addActionListener(this);
clayout = new CardLayout();
pframe = new JPanel(clayout);
add(pframe);
JPanel mainp = new JPanel(new BorderLayout());
JLabel mainl = new JLabel("学生信息管理平台",SwingConstants.CENTER);
mainl.setFont(new Font("serif",Font.BOLD,30));
mainp.add(mainl);
pframe.add(mainp,"main");
clayout.show(pframe, "main");
}
public void actionPerformed(ActionEvent e){
if(e.getSource() == jm21 || e.getSource() == jb1){
if(ip == null){
ip= new InsertPanel();
pframe.add(ip,"insert");
}
clayout.show(pframe, "insert");
this.setTitle("输入学生信息");
}
else if(e.getSource() == jm22 || e.getSource() == jb2){
if(sp == null){
sp= new SelectPanel();
pframe.add(sp,"select");
}
clayout.show(pframe, "select");
this.setTitle("查询学生信息");
}
else if(e.getSource() == jm11 || e.getSource() == jb3){
System.exit(0);
}
}
}
第二个:
import javax.swing.JFrame;
public class MainTest {
public static void main(String [] args){
MainFrame f = new MainFrame("学生信息管理平台");
f.setSize(400,300);
f.setLocation(350,250);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setVisible(true);
}
}
第二个:
import java.sql.Connection;
import java.sql.DriverManager;
public class MySQLConnection {
static Connection getCon(){
Connection con = null;
try{
Class.forName("com.mysql.jdbc.Driver");
con = DriverManager.getConnection("jdbc:mysql://localhost/test","root","123");
}
catch(Exception e){
System.out.println("建立数据库连接遇到异常!");
}
return con;
}
}
第四个:
import java.awt.BorderLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.SwingConstants;
public class SelectPanel extends JPanel implements ActionListener{
JButton jb;
JTextField jt;
JTextField jt1,jt2,jt3,jt4;
public SelectPanel(){
JLabel jl = new JLabel("请输入学号:",SwingConstants.CENTER);
jt = new JTextField();
jb = new JButton("确定");
JPanel jp1 = new JPanel(new GridLayout(1,3));
jp1.add(jl);
jp1.add(jt);
jp1.add(jb);
JLabel j1,j2,j3,j4;
j1 = new JLabel("学号:",SwingConstants.CENTER);
j2 = new JLabel("姓名:",SwingConstants.CENTER);
j3 = new JLabel("性别:",SwingConstants.CENTER);
j4 = new JLabel("年龄:",SwingConstants.CENTER);
jt1 = new JTextField(6);
jt1.setEditable(false);
jt2 = new JTextField(6);
jt2.setEditable(false);
jt3 = new JTextField(6);
jt3.setEditable(false);
jt4 = new JTextField(6);
jt4.setEditable(false);
JPanel jp2 = new JPanel(new BorderLayout());
JPanel jp3 = new JPanel(new GridLayout(4,2));
jp2.add(new JLabel(""),BorderLayout.NORTH);
jp3.add(j1);
jp3.add(jt1);
jp3.add(j2);
jp3.add(jt2);
jp3.add(j3);
jp3.add(jt3);
jp3.add(j4);
jp3.add(jt4);
jp2.add(jp3);
this.setLayout(new BorderLayout());
add(jp1,BorderLayout.NORTH);
add(jp2);
jb.addActionListener(this);
}
public void actionPerformed(ActionEvent e){
if(e.getSource() == jb){
String stuNo = jt.getText().trim();
Student s = new Student();
boolean b = true;
try{
b = s.selectByStuNo(stuNo);
}
catch(Exception ex){
System.out.println("查询学生信息遇到异常!");
}
if(b){
jt1.setText(s.getStuNo());
jt2.setText(s.getName());
jt3.setText(s.getGender());
int a = s.getAge();
Integer i = new Integer(a);
jt4.setText(i.toString());
}
else{
JOptionPane.showMessageDialog(null, "无此学生!");
}
}
}
}
第五个:
import javax.swing.JFrame;
public class SelectTest {
public static void main(String [] args){
JFrame f = new JFrame("查询学生信息");
SelectPanel p = new SelectPanel();
f.add(p);
f.setSize(400,300);
f.setLocation(300,250);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setVisible(true);
}
}
第六个:
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.Statement;
public class Student {
String stuNo;
String name;
String gender;
int age;
public Student(){}
public Student(String stuNo,String name,String gender, int age){
this.stuNo = stuNo;
this.name = name;
this.gender = gender;
this.age = age;
}
public String getStuNo(){
return stuNo;
}
public void setStuNo(String stuNo){
this.stuNo = stuNo;
}
public String getName(){
return name;
}
public void setName(String name){
this.name = name;
}
public String getGender(){
return gender;
}
public void setGender(String gender){
this.gender = gender;
}
public int getAge(){
return age;
}
public void setAge(int age){
this.age = age;
}
public boolean insertStudent(){
boolean b = true;
try{
Connection con = MySQLConnection.getCon();
Statement statement = con.createStatement();
String sql = "insert into student values('" + stuNo + "','" + name +"','" + gender + "'," + age + ")";
sql = new String(sql.getBytes("gb2312"),"ISO8859_1");
statement.executeUpdate(sql);
con.close();
}
catch(Exception e){
b = false;
System.out.println("插入数据库遇到异常!");
}
return b;
}
public boolean selectByStuNo(String stuNo)throws Exception{
boolean b = true;
Connection con = MySQLConnection.getCon();
Statement statement = con.createStatement();
String sql = "select * from student where stuNo =" + stuNo;
ResultSet rs = statement.executeQuery(sql);
if(rs != null && rs.next()){
String no = rs.getString(1);
this.setStuNo(no);
String n = rs.getString(2);
n = new String(n.getBytes("ISO8859_1"),"gb2312");
this.setName(n);
String g = rs.getString(3);
g = new String (g.getBytes("ISO8859_1"),"gb2312");
this.setGender(g);
this.setAge(rs.getInt(4));
b = true;
}
rs.close();
statement.close();
con.close();
return b;
}
}
数据库你自己弄吧,我没时间弄了!初学得多动手哦
⑥ 下载的java源代码怎么打开
.class文件是java编译后的文件,它不是源代码,真正的java源代码是.java文件。
java源代码是txt格式的.java文件,用记事本就可以打开。
用eclipse打开java文件的方式是:
如果java文件是一个eclipse工程(根目录带有.project文件),用file/import/general/exist java project/(大概是)然后找到你的目录。
否则需要自己新建一个工程file/new/java project
然后把java文件拷贝到.src目录下。
.class文件是直接的编译好的文件,可以用jad把.class文件反编译成java文件,不过反编译的代码和原来的代码不一定完全一样。
⑦ 用JAVA编程的通过SQL连接数据库的商品库存管理系统的源代码
package com.company.;
import java.sql.Connection;import java.sql.DriverManager;import java.sql.PreparedStatement;import java.sql.ResultSet;import java.sql.SQLException;import java.sql.Statement;public class BaseDao {
// 数据库驱动
String driver = "com.microsoft.sqlserver.jdbc.SQLServerDriver";
//url
String url = "jdbc:sqlserver://数据库ip:端口号;databaseName=数据库名;";
//用户名
String uname = "数据库用户名";
//密码
String pwd = "数据库密码";
/**
* 获得连接对象
* @return
*/
protected Connection getCon(){
//返回的连接
Connection con = null;
try {
//载入驱动
Class.forName(driver);
//得到连接
con = DriverManager.getConnection(url, uname, pwd);
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
}
return con;
}
/**
* 关闭数据库
* @param con
* @param stmt
* @param rs
*/
protected void closeDB(Connection con, Statement stmt, ResultSet rs){
if(rs != null){
try {
//关闭结果集
rs.close();
rs = null;
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
if(stmt != null){
try {
//关闭语句对象
stmt.close();
stmt = null;
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
if(con != null){
try {
//关闭连接对象
con.close();
con = null;
} catch (SQLException e) {
e.printStackTrace();
}
}
}
protected void closeDB(Connection con, PreparedStatement pstmt, ResultSet rs){
if(rs != null){
//关闭结果集
try {
rs.close();
rs = null;
} catch (SQLException e) {
e.printStackTrace();
}
}
if(pstmt != null){
try {
pstmt.close();
pstmt = null;
} catch (SQLException e) {
e.printStackTrace();
}
}
if(con != null){
try {
con.close();
con = null;
} catch (SQLException e) {
e.printStackTrace();
}
}
}
这个是我写的一个基本的连接sql2005数据库的代码,.! 不知道你能不能用,! 你看一下吧, 连接的时候需要sqljdbc.jar数据库驱动,!