1 package first; 2  3 public class Employee { 4     private String fName, lName; 5     private long _ID; 6     private int workdays; 7     private float BASIC, HRA, TA, PF, NET;     8  9     public String getfName() {10         return fName;11     }12     public void setfName(String fName) {13         this.fName = fName;14     }15     public String getlName() {16         return lName;17     }18     public void setlName(String lName) {19         this.lName = lName;20     }21     public long get_ID() {22         return _ID;23     }24     public void set_ID(long _ID) {25         this._ID = _ID;26     }27     public float getBASIC() {28         return BASIC;29     }30     public void setBASIC(float bASIC) {31         BASIC = bASIC;32     }33     public int getWorkdays() {34         return workdays;35     }36     public void setWorkdays(int workdays) {37         this.workdays = workdays;38     }39     public float calculateSalary(){40             BASIC = BASIC* workdays;41             HRA = 0.04f * BASIC;42             TA = 0.01f * (BASIC + HRA);43             PF = 0.0125f * (BASIC + HRA + TA);44             NET = (BASIC + HRA + TA) - PF;45             return NET;46             47     }48 49 50 }

 1 package first; 2  3 import java.util.Scanner; 4  5 public class Company { 6  7     public static void main(String[] args) { 8         Employee []emp=new Employee[5]; 9         Scanner reader = new Scanner(System.in);10         for(int i=0;i<5;i++){11             System.out.println("Enter the  0"+(i+1)+" Employee");12             emp[i]=new Employee(); //否则会提示空指针异常  Otherwise you will be prompted to null pointer exception13             System.out.println("Enter First Name:");        14             emp[i].setfName(reader.next());15             System.out.println("Enter Last Name:");16             emp[i].setlName(reader.next());17             System.out.println("Enter Daily Wages:");18             emp[i].setBASIC(reader.nextFloat());19             System.out.println("Enter Number of Working Days:");20         21             emp[i].setWorkdays(reader.nextInt());22             emp[i].set_ID(100+(long)( Math.random()*(200-100)));//create ID between 100--20023             24         }25         System.out.println("ID    FirstName   LastName   WorkingDays    Salary  ");26         for(int j=0;j<5;j++){27             System.out.printf("%d \t %s \t  %s\t\t%d \t %.2f\n",emp[j].get_ID(),emp[j].getfName(),emp[j].getlName(),emp[j].getWorkdays(),emp[j].calculateSalary());28         }29 30     }31 32 }