Question

我是初学者，我几乎什么都不知道，我厌倦了做一些课程而且只是乱用方法，但由于某种原因这种方法不会打印，我也很难用数组:( < / p>

主要课程：

public class Employees {

static Employee[] array =new Employee[3];
static int i=0;


 public void insertEmployee(){

    Scanner keyboard=new Scanner(System.in);

    System.out.println("please fill in the information :");
    System.out.println("name :");
    String Name=keyboard.next();
    System.out.println("ID :");
    long ID=keyboard.nextLong();
    System.out.println("Salary :");
    double Salary =keyboard.nextDouble();

    Citizen s2 =new Citizen(Name);

   Employee E= new Employee(ID,s2,Salary);
   array[i]=E;

}

public  void main(String[] args) {

  Employees m1=new Employees();

  for ( i=0; i<3;++i){
    Employees c1=new Employees();
    c1.insertEmployee();
  }

  System.out.println("*****");
  for (i=0;i<3;++i){
      array[i].print();
  }
 }
}

第二课：

public class Employee {

private Citizen employeeInfo =new Citizen();
private long employeeID;
private double employeeSalary;

Employee(long employeeID,Citizen employeeInfo ){

    this.employeeID=employeeID;
    this.employeeInfo=employeeInfo;

}

Employee(long employeeID,Citizen employeeInfo, double employeeSalary){

    this.employeeID=employeeID;
    this.employeeInfo=employeeInfo;
    this.employeeSalary=employeeSalary;

}

void print(){
    if (employeeSalary==0){
        employeeSalary=-1;
    }
    System.out.println(employeeID+"-"+employeeInfo.getCitizenName()+"-"+employeeSalary);

 }
}

和最后一个：

public class Citizen {

private String citizenName;
private long citizenID;

public Citizen(){

}

public Citizen(String Name){

    this.citizenName=Name;

}
public Citizen(String citizenName,long citizenID){

    this.citizenName=citizenName;
    this.citizenID=citizenID;

}

public String getCitizenName(){

    return citizenName;
}

public long getCitizenID(){

    return citizenID;
 }
}

谢谢你：）

Answer 1

必须是public static void main(String[] args)。 static很重要

我打电话给方法，但它没有打印

1 个答案: