办公系统java源代码,办公软件代码编程

OA办公系统源码使用方法

当前来说,大部分的OA系统都是通过java的形式来实现的,可以将OA系统源码导入到eclipse中查看即可。

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步骤一:打开eclipse,选择菜单栏的file下拉选的import进入项目引入设置界面。

步骤二:选择要导入的项目路径后,勾选上projects中的项目名称。

步骤三:点击页面右下角的“Finish”即可完成项目引入。

第四步:在引入的项目上右击,选择run on  server运行即可。

求JAVA源代码

我用了半个小时 帮你写了一个简单的验证用户名和密码登陆问题 别辜负我的好意 下面是代码!(建好包和类 代码粘过去就能用)

实体类 包entity

-------------------------------------------------------------

package entity;

/**

* 用户实体类

* @author new

*

*/

public class Users {

private String name;//用户名

private String pass;//用户密码

/**

* 空的构造函数 用户实力化 此类对象

*/

public Users(){

}

/**

* 构造函数 接收用户名和密码

* @param name

* @param pass

*/

public Users(String name, String pass) {

this.name = name;

this.pass = pass;

}

/**

* 下面set和get方法就不用解释了吧

* @return

*/

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public String getPass() {

return pass;

}

public void setPass(String pass) {

this.pass = pass;

}

}

数据库类 包dao(我是模拟一下数据库 没有用到数据库)

--------------------------------------------------------------

package dao;

import java.util.*;

import entity.Users;//导入实体类

/**

* 模拟数据库 用户DAO

* @author new

*

*/

public class UsersDAO {

private static Users users=new Users();

static

{

users.setName("tom");

users.setPass("jerry");

}

/**

* 根据姓名查找这个用户 (模拟一下数据库)

* @param name

* @return

*/

public Users findUserByName(String name)

{

if(name.equals(this.users.getName()))

{

return this.users;

}

return null;

}

}

业务类 包service (验证用户名和密码)

------------------------------------------------------------

package service;

import dao.UsersDAO;

import entity.Users;

/**

* 验证密码 业务类

* @author new

*

*/

public class validatePass {

//实力化DAO对象

private UsersDAO us=new UsersDAO();

/**

* 验证输入的密码是否正确

* @param name

* @param pass

* @return

*/

public Users validate(String name,String pass)

{

Users user=null;

user=us.findUserByName(name);

//如果不为空 说明查到了

if(user!=null)

{

//用查询出来对象的密码和传过来的密码比较

if(user.getPass().equals(pass))

{

return user;

}

}

return null;

}

}

最后是测试test类 包test

----------------------------------------------------------

package test;

import entity.Users;

import service.validatePass;

/**

* 测试类

* @author new

*

*/

public class test {

/**

* main方法 用于测试

* @param args

*/

public static void main(String[] args)

{

//实例化业务类对象

validatePass v=new validatePass();

//用户名和密码

String name="tom";

String pass="jerry";

//开始验证

Users user=v.validate(name, pass);

if(user==null)

{

System.out.println("你输入的用户名或密码错误!");

}else

{

System.out.println("你已经通过验证,成功登陆!");

}

}

}

我想看一点简单的Java程序的源代码

兄弟可以联系 hi留言也行

我这里保留了,从学习java第一天起到现在 学习练习代码,

基础部分注释很详细。

//每一位相加求和

public class Demo

{

public static void main(String[] args)

{

int i = 45678;

int sum = 0;

int c = 0;

for(int j = 4; j = 0; j--)

{

int b = (int) Math.pow(10, j);

c = i / b;

System.out.println(c);

sum += c;

System.out.println("sum=" + sum);

i %= b;

}

System.out.println(sum);

}

}

public class ZY1030

{

public static void main(String[] asgs)

{

zy1();

zy2();

zy3();

zy4();

zy5();

zy6();

zy7();

yanghuisanjiao();

}

public static void yanghuisanjiao()

{

int[][] pas = new int[6][];

for(int i = 0; i pas.length; i++)

{

pas[i] = new int[i + 1];

pas[i][0] = 1;

pas[i][i] = 1;

for(int j = 0; j pas[i].length - 1; j++)

{

if(j = 1 i 1)

pas[i][j] = pas[i - 1][j - 1] + pas[i - 1][j];

}

}

for(int i = 0; i pas.length; i++)

{

for(int j = 0; j pas[i].length; j++)

{

System.out.print(pas[i][j]);

System.out.println();

}

}

System.out.println();

}

private static void zy1()

{

System.out.println("��ҵ1");

/*

*

**

***

****

*****

******

*******

*/

for(int r = 0; r 7; r++)

{

for(int j = 0; j r + 1; j++)

{

System.out.print("*");

}

System.out.println();

}

}

private static void zy2()

{

System.out.println("\n��ҵ2");

/*

*

***

*****

*******

*********

*/

for(int r = 0; r = 5; r++)

{

for(int j = 0; j 11 - r; j++)

{

System.out.print(" ");

}

for(int j = 0; j r * 2 + 1; j++)

{

System.out.print("*");

}

System.out.println();

}

}

private static void zy3()

{

System.out.println("\n��ҵ3");

/*

*

* *

* * *

* * * *

* * * * *

*/

for(int r = 0; r = 5; r++)

{

for(int j = 0; j 10 - r; j++)

{

System.out.print(" ");

}

for(int j = 0; j r; j++)

{

System.out.print("* ");

}

System.out.println();

}

}

private static void zy4()

{

System.out.println("\n��ҵ4");

/*

***********

***********

***********

***********

***********

*/

for(int r = 0; r = 5; r++)

{

for(int j = 0; j 7 - r; j++)

{

System.out.print(" ");

}

for(int j = 0; j 10; j++)

{

System.out.print("*");

}

System.out.println();

}

}

private static void zy5()

{

System.out.println("\n��ҵ5");

/*

1X1=1

1X2=2 2X2=4

1X3=3 2X3=6 3X3=9

....

*/

for(int r = 1; r = 9; r++)

{

for(int j = 1; j = r; j++)

{

int iValue = j * r; //����ֵ

String str = j + "X" + r + "=" + iValue + " ";

System.out.print(str);

//System.out.print(" J:" + j);

}

System.out.println();

//System.out.println("R:" + r);

}

}

private static void zy6()

{

System.out.println("\n��ҵ6");

/*

������(����) ֻ�ܱ�1�ͱ����������������

3 5 7 11 13 17 19 23 ....

int n = 4;

boolean t = true; // assume is SU_SHU

for(int i=2; in; i++)

{

if(n%i==0)

{

t = false;

break;

}

}

System.out.println(t);

*/

for(int i = 2; i = 100; i++)

{

// if(i % 2 ==0 || i % 3 == 0 )

// {

// continue;

// }

// System.out.print(i + " ");

boolean bTrue = true;

for(int j = 2; j i; j++)

{

if(i % j == 0)

{

bTrue = false;

break;

}

}

if(bTrue)

{

System.out.println(i);

}

}

System.out.println();

}

private static void zy7()

{

System.out.println("\n��ҵ7");

/*

int n = 23623;

int x = n % 100000 / 10000;

System.out.println(x);

x = n % 10000 / 1000;

System.out.println(x);

x = n % 1000 / 100;

System.out.println(x);

*/

}

}

什么是java源代码 怎么查看

你说的java源代码是指编译成的class文件前的java文件。

当我们运行.java文件时,它会被系统编译成.class文件,例如Test.java编译之后就是Test.class,

源文件就是指Test.java文件,

一般部署项目时,有.class文件就可以发布运行了,但是如果想修改这个系统,.class是不能修改的,要有.java文件才能修改

也可以上网去下反编译软件,就是能把.class文件大部分还原成.java文件的工具,但不是100%还原,而且如果不是正版的,小心有毒啊,什么的。

求编写一个超级简单的Java的程序源代码

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

class ConstructFrame extends JFrame

{

private static final long serialVersionUID = 1L;

String value1="",result,value2="";

int flag=0,fix=0,sum=1;

Boolean happy;

JTextField text=new JTextField(30);

int flagsum=0;

Container c=getContentPane();

JButton buttonx;

ConstructFrame()

{ super("计算器");

c.setLayout(null);

c.setBackground(Color.blue);

this.setSize(400, 400);

c.add(text);

text.setHorizontalAlignment(JTextField.RIGHT);

final JButton buttonx=new JButton("BackSpace");

c.add(buttonx);

buttonx.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

int count=0;

String temp;

if(flag==0)

{

count=value1.length();

if(count!=1)

temp=value1.substring(0, count-1);

else

temp="0";

value1=temp;

}

else

{

count=value2.length();

if(count!=1)

temp=value2.substring(0, count-1);

else

temp="0";

value2=temp;

}

text.setText(temp);

}

});

final JButton buttony=new JButton("CE");

c.add(buttony);

buttony.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

value1="";

value2="";

flag=0;

text.setText("0");

}

});

final JButton button1=new JButton("1");

c.add(button1);

button1.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

String temp;

if(flag==0)

{

value1=value1+1;

temp=value1;

}

else

{

value2=value2+1;

temp=value2;

}

text.setText(temp);

}

});

final JButton button2=new JButton(" 2 ");

c.add(button2);

button2.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

String temp;

if(flag==0)

{

value1=value1+2;

temp=value1;

}

else

{

value2=value2+2;

temp=value2;

}

text.setText(temp);

}

});

final JButton button3=new JButton("3");

c.add(button3);

button3.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

String temp;

if(flag==0)

{

value1=value1+3;

temp=value1;

}

else

{

value2=value2+3;

temp=value2;

}

text.setText(temp);

}

});

final JButton button4=new JButton("4");

c.add(button4);

button4.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

String temp;

if(flag==0)

{

value1=value1+4;

temp=value1;

}

else

{

value2=value2+4;

temp=value2;

}

text.setText(temp);

}

});

final JButton button5=new JButton("5");

c.add(button5);

button5.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

String temp;

if(flag==0)

{

value1=value1+5;

temp=value1;

}

else

{

value2=value2+5;

temp=value2;

}

text.setText(temp);

}

});

final JButton button6=new JButton("6");

c.add(button6);

button6.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

String temp;

if(flag==0)

{

value1=value1+6;

temp=value1;

}

else

{

value2=value2+6;

temp=value2;

}

text.setText(temp);

}

});

final JButton button7=new JButton("7");

c.add(button7);

button7.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

String temp;

if(flag==0)

{

value1=value1+7;

temp=value1;

}

else

{

value2=value2+7;

temp=value2;

}

text.setText(temp);

}

});

final JButton button8=new JButton("8");

c.add(button8);

button8.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

String temp;

if(flag==0)

{

value1=value1+8;

temp=value1;

}

else

{

value2=value2+8;

temp=value2;

}

text.setText(temp);

}

});

final JButton button9=new JButton("9");

c.add(button9);

button9.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

String temp;

if(flag==0)

{

value1=value1+9;

temp=value1;

}

else

{

value2=value2+9;

temp=value2;

}

text.setText(temp);

}

});

final JButton button0=new JButton("0");

c.add(button0);

button0.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

String temp;

if(flag==0)

{

value1=value1+0;

temp=value1;

}

else

{

value2=value2+0;

temp=value2;

}

text.setText(temp);

}

});

final JButton buttonadd=new JButton(" + ");

c.add(buttonadd);

buttonadd.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

flag=1;

fix=1;

flagsum=0;

}

});

final JButton buttonsubtract=new JButton(" - ");

c.add(buttonsubtract);

buttonsubtract.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

flag=1;

fix=2;

flagsum=0;

}

});

final JButton buttoncheng=new JButton(" * ");

c.add(buttoncheng);

buttoncheng.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

flag=1;

fix=3;

flagsum=0;

}

});

final JButton buttonchu=new JButton(" / ");

c.add(buttonchu);

buttonchu.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

flag=1;

flagsum=0;

fix=4;

}

});

final JButton buttonequal=new JButton(" = ");

c.add(buttonequal);

buttonequal.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

double temp1,temp2;

double temp=0;

flagsum=0;

temp1=Double.parseDouble(value1);

temp2=Double.parseDouble(value2);

flag=0;

switch(fix)

{

case 1: temp=temp1+temp2;break;

case 2: temp=temp1-temp2;break;

case 3: temp=temp1*temp2;break;

case 4: temp=temp1/temp2;break;

}

result=Double.valueOf(temp).toString();

value1=result;

value2="";

flag=1;

text.setText(result);

}

});

final JButton buttonpoint=new JButton(".");

c.add(buttonpoint);

buttonpoint.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{ if(flagsum==0)

{

String temp;

if(flag==0 )

{

value1=value1+".";

temp=value1;

}

else

{

value2=value2+".";

temp=value2;

}

flagsum=1;

text.setText(temp);

}

}

});

JButton buttonz=new JButton("Start");

c.add(buttonz);

buttonz.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{ if(sum%2==1)

{

happy=true;

text.setText("0.");

flag=0;

}

else

{

happy=false;

value1="";

value2="";

text.setText("");

}

text.setEnabled(happy);

button1.setEnabled(happy);

button2.setEnabled(happy);

button3.setEnabled(happy);

button4.setEnabled(happy);

button5.setEnabled(happy);

button6.setEnabled(happy);

button7.setEnabled(happy);

button8.setEnabled(happy);

button9.setEnabled(happy);

button0.setEnabled(happy);

buttonx.setEnabled(happy);

buttony.setEnabled(happy);

buttonadd.setEnabled(happy);

buttonsubtract.setEnabled(happy);

buttonpoint.setEnabled(happy);

buttonequal.setEnabled(happy);

buttoncheng.setEnabled(happy);

buttonchu.setEnabled(happy);

sum++;

}

});

button1.setEnabled(false);

button2.setEnabled(false);

button3.setEnabled(false);

button4.setEnabled(false);

button5.setEnabled(false);

button6.setEnabled(false);

button7.setEnabled(false);

button8.setEnabled(false);

button9.setEnabled(false);

button0.setEnabled(false);

buttonx.setEnabled(false);

buttony.setEnabled(false);

buttonadd.setEnabled(false);

buttonsubtract.setEnabled(false);

buttonpoint.setEnabled(false);

buttonequal.setEnabled(false);

buttoncheng.setEnabled(false);

buttonchu.setEnabled(false);

text.setEnabled(false);

text.setBounds(20, 20, 200, 40);

buttonx.setBounds(20, 60,100, 40);

buttony.setBounds(140, 60,100, 40);

buttonz.setBounds(260, 60,80, 40);

button1.setBounds(20, 120,60, 40);

button2.setBounds(100, 120,60, 40);

button3.setBounds(180, 120,60, 40);

buttonadd.setBounds(260, 120,60, 40);

button4.setBounds(20, 180,60, 40);

button5.setBounds(100, 180,60, 40);

button6.setBounds(180, 180,60, 40);

buttonsubtract.setBounds(260, 180,60, 40);

button7.setBounds(20, 240,60, 40);

button8.setBounds(100, 240,60, 40);

button9.setBounds(180, 240,60, 40);

buttoncheng.setBounds(260,240,60,40);

button0.setBounds(20, 300,60, 40);

buttonpoint.setBounds(100, 300, 60, 40);

buttonequal.setBounds(180,300,60, 40);

buttonchu.setBounds(260, 300,60, 40);

setVisible(true);

}

class MYMouseEvent extends MouseAdapter

{

public void mousePressed(MouseEvent e)

{

value1=e.toString();

text.setText(value1);

}

}

}

class Calutator

{

public static void main(String[] args)

{

new ConstructFrame();

}

}

你自己慢慢的看吧!


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