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Bài thực hành tuần 7: Lớp trừu tượng

10cth1-2 April 11, 2012 Nam Le 0

[codes=java]import java.io.*;
import java.util.*;

abstract class nv
{
  protected String manv;
  protected String tennv;
  protected String trinhdo;
  protected int luongcb;
  
  public void nhap()
  {
    Scanner x=new Scanner(System.in);
    System.out.print(“Nhap ma NV: “);
    manv=x.nextLine();
    System.out.print(“Nhap ten NV: “);
    tennv=x.nextLine();
    System.out.print(“Trinh do: “);
    trinhdo=x.nextLine();
    System.out.print(“Luong cb: “);
    luongcb=x.nextInt();
  }
  
  abstract public int luong();
  
  public void xuat()
  {
    System.out.print(manv+”\t”+tennv+”\t”+trinhdo);
  }
}

class nvql extends nv
{
  private  String chuyenmon;
  private  int  pccv;
  Scanner x=new Scanner(System.in);
  public void nhap()
  {
    super.nhap();
    System.out.print(“Chuyen mon: “);
    chuyenmon=x.nextLine();
    System.out.print(“Phu cap chuc vu (int): “);
    pccv=x.nextInt();
  }
  
  public int luong()
  {
    return luongcb+pccv;
  }
  
  public void xuat()
  {
    super.xuat();
    System.out.print(“\t”+chuyenmon+”\t”+pccv);
  }
}

class nvnc extends nv
{
  private String chuyenmon;
  private int pcdh;
  
  Scanner x=new Scanner(System.in);
  public void nhap()
  {
    super.nhap();
    System.out.print(“Chuyen mon: “);
    chuyenmon=x.nextLine();
    System.out.print(“Phu cap doc hai (int): “);
    pcdh=x.nextInt();
  }  
  
  public int luong()
  {
    return luongcb+pcdh;
  }
  
  public void xuat()
  {
    super.xuat();
    System.out.print(chuyenmon+”\t”+pcdh);
  }
}
class test
{
  public static void main (String[] args) {
    int chon,tt=0,i=0, n=100;
    Scanner x=new Scanner(System.in);
    nv m[]=new nv[n];
  do{
    System.out.print(“\nChon loai nhan vien, muon thoat bam 0:\n”);
    System.out.print(“1. Nhan vien quan ly\n”);
    System.out.print(“2. Nhan vien nghien cuu\n”);
    System.out.print(“3. Xuat danh sach\n”);  
    chon=x.nextInt();
    switch(chon)
    {
      case 1:
      {
        m[i]= new nvql();
        m[i].nhap();
        tt=1;
        i++;
        break;  
      }
      case 2:
      {
        m[i]= new nvql();
        m[i].nhap();
        tt=1;
        i++;
        break;
      }
      case 3:
      {
        for(int j=0; j        {
          m[j].xuat();
          System.out.print(“\tluong: “+m[j].luong()+”\n”);
        }
        break;
      }
      default:
        tt=0;
        break;
    }
  }while(tt!=0);
}
}[/codes]


Last modified on December 4th, 2020 at 11:47 pm

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