java集合-- arraylist小员工项目

import java.io.*;
import java.util.ArrayList;


public class Emexe {

    
    public static void main(String[] args) throws IOException {
        
        EmpManage em=new EmpManage();
        
        BufferedReader br=new  BufferedReader(new InputStreamReader(System.in));
        while(true){
            System.out.println("**********管理菜单************");
            System.out.println("1、添加雇员");
            System.out.println("2、查找雇员");
            System.out.println("3、修改雇员");
            System.out.println("4、删除雇员");
            System.out.println("******************************");
            System.out.println("请输入数字1-4选择：");
            
            String operType=br.readLine();
            if(operType.equals("1")){
                System.out.println("请输入雇员编号");
                String empNo=br.readLine();
                System.out.println("请输入雇员名字");
                String name=br.readLine();
                System.out.println("请输入雇员薪水");
                float sal=Float.parseFloat(br.readLine());
                
                Emp emp=new Emp(empNo,name,sal);
                em.addEmp(emp);
            }
            else if(operType.equals("2")){
                System.out.println("请输入雇员编号");
                String empNo=br.readLine();
                em.showInfo(empNo);
            }
            else if(operType.equals("3")){
                
            }
            else if(operType.equals("4")){
    
            }
        }
        
    }

}
class Emp
{
    private String empNo;
    private String name;
    private float sal;
    
    public Emp(String empNo,String name,float sal){
        this.empNo=empNo;
        this.name=name;
        this.sal=sal;
    }

    public String getEmpNo() {
        return empNo;
    }

    public void setEmpNo(String empNo) {
        this.empNo = empNo;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public float getSal() {
        return sal;
    }

    public void setSal(float sal) {
        this.sal = sal;
    }
        
}
class EmpManage{
    private ArrayList a1=null;
    
    public EmpManage(){
        a1=new ArrayList();
    }
    public void addEmp(Emp emp){
        a1.add(emp);
    }
    public void showInfo(String empNo){
        //遍历整个ArrayList
        for(int i=0;i<a1.size();i++)
        {
            //取出Emp
            Emp emp=(Emp) a1.get(i);
            if(emp.getEmpNo().equals(empNo)){
                System.out.println("该员工编号"+empNo+"姓名"+emp.getName()+"薪水"+emp.getSal());                
            }
        }
    }
    public void update(String empNo,float newSal){
        for(int i=0;i<a1.size();i++){
            Emp emp=(Emp) a1.get(i);
            if(emp.getEmpNo().equals(empNo)){
                emp.setSal(newSal);
                System.out.println("success!");
            }
        }
    }
    public void delEmp(String empNo){
        for(int i=0;i<a1.size();i++){
            Emp emp=(Emp) a1.get(i);
            if(emp.getEmpNo().equals(empNo)){
                a1.remove(i);
                System.out.println("success!");
            }
        }
    }

}