Application of Java core technology in arraylist [Employee Salary Management System]

The requirements of the employee salary management system are as follows:

/**
* Author: Kevin
* Date: 20110-7-15
* Function: Use arraylist to build a system of employeesalarymangement,
* The system is useful for manager to add new employee 'information, delete employee 'information,
* Update employee 'information, and show employee 'information.
* It's easy to obtain the OOP.
**/
Import java. util. arraylist;
Import java. Io .*;

Public class employeesalary {

Public static void main (string [] ARGs) throws exception {

// Create object empmanage
Empmanage empm = new empmanage ();

Inputstreamreader ISR = new inputstreamreader (system. In );
Bufferedreader BR = new bufferedreader (ISR );
// Create a menu
While (true)
{
System. Out. println ("select what you want to do ");
System. Out. println ("select 1: Insert new employee ");
System. Out. println ("select 2: Show information ");
System. Out. println ("select 3: delete employee ");
System. Out. println ("select 4: Update salary ");
System. Out. println ("select 5: excit ");

String rows = Br. Readline ();
If (response. Equals ("1 ")){
System. Out. println ("input number :");

String empno = Br. Readline ();

System. Out. println ("input name :");

String empname = Br. Readline ();

System. Out. println ("input salary :");

Float salary = float. parsefloat (Br. Readline ());

EMP = new EMP (empno, empname, salary );

Empm. addemp (EMP );

} Else if (response. Equals ("2 ")){
System. Out. println ("input number :");

String empno = Br. Readline ();

Empm. showemp (empno );
} Else if (response. Equals ("3 ")){
System. Out. println ("input number :");

String empno = Br. Readline ();

Empm. delemp (empno );
} Else if (response. Equals ("4 ")){
System. Out. println ("input number :");

String empno = Br. Readline ();

System. Out. println ("input new salary :");

Float newsalary = float. parsefloat (Br. Readline ());

Empm. updateemp (empno, newsalary );
} Else if (response. Equals ("5 ")){
// Exit system.
System. Exit (0 );
}

}

}

}

 

 

//************************************** ***************************

// Class employee
Class EMP
{
Private string empno; // employee number
Private string empname; // employee name
Private float salary; // employee salary
 
Public String getempno (){
Return empno;
}
Public void setempno (string empno ){
This. empno = empno;
}
Public String getempname (){
Return empname;
}
Public void setempname (string empname ){
This. empname = empname;
}
Public float getsalary (){
Return salary;
}
Public void setsalary (float salary ){
This. Salary = salary;
}

Public EMP (string empno, string empname, float salary)
{
This. empno = empno;
This. empname = empname;
This. Salary = salary;


}

}

 

//************************************** ********************

// Class employeesalarymanage

Class empmanage
{
Private arraylist Al = NULL;
 
Public empmanage ()
{
Al = new arraylist ();
}
// Insert new employee
Public void addemp (EMP)
{
Al. Add (EMP );
}
// Show information
Public void showemp (string empno)
{
For (INT I = 0; I <Al. Size (); I ++)
{

// Get object
EMP = (EMP) Al. Get (I );
If (EMP. getempno (). Equals (empno ))
{
System. Out. println ("the employee is founded :");
System. Out. println ("the employee 'Number:" + EMP. getempno ());
System. Out. println ("the employee 'name:" + EMP. getempname ());
System. Out. println ("the employee 'salary:" + EMP. getsalary ());

}
}
}
// Delete employee
Public void delemp (string empno)
{
For (INT I = 0; I <Al. Size (); I ++)
{

// Get object
EMP = (EMP) Al. Get (I );
If (EMP. getempno (). Equals (empno ))
{
System. Out. println ("the employee which number is" + EMP. getempno ()
+ "Is deleted successfully ");
Al. Remove (I );

}
}
}
 
// Update employee
Public void updateemp (string empno, float newsalary)
{
For (INT I = 0; I <Al. Size (); I ++)
{

// Get object
EMP = (EMP) Al. Get (I );
If (EMP. getempno (). Equals (empno ))
{
EMP. setsalary (newsalary );
System. Out. println ("Update successfully ");
}
}
}

}