java核心技术之 ArrayList应用【职员薪水管理系统】

客官°小女子只卖身不卖艺 2022-04-17 02:23 139阅读 0赞

职员薪水管理系统需求如下：

![0_1310751324C33D.gif][]

/\*\*  
\* 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 oper= br.readLine();  
if (oper.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 emp = new Emp(empNo,empName,salary);  
  
empm.addEmp(emp);  
  
\}else if (oper.equals("2"))\{  
System.out.println("input number:");  
  
String empNo = br.readLine();  
  
empm.showEmp(empNo);  
\}else if (oper.equals("3"))\{  
System.out.println("input number:");  
  
String empNo = br.readLine();  
  
empm.delEmp(empNo);  
\}else if (oper.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 (oper.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 emp)  
\{  
al.add(emp);  
\}  
//show information  
public void showEmp(String empNo)  
\{  
for (int i= 0 ;i<al.size();i++)  
\{

//get object  
Emp 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 = (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 = (Emp)al.get(i);  
if(emp.getEmpNo().equals(empNo))  
\{  
emp.setSalary(newSalary);  
System.out.println("update successfully");  
\}  
\}  
\}

[0_1310751324C33D.gif]: /images/20220417/ccf3b7e2db8c4d3ca7308f19233e760c.png