Question

好吧，这很简单。

我需要在特定索引处打印出对象的所有参数。但是，所有对象都显示内存地址。我知道你必须覆盖toString方法。但我不确定在哪里。

任何帮助都会很棒！

这是我的员工类代码：

public class Employee {

private String name;
private int age;
private String department;

public String getDept(){
    return department;
}//end dept

public void setDept(String dept){
    this.department = dept;
}//end

public String getName(){
    return name;
}//end name

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

public int getAge(){
    return age;
}//end age

public void setAge(int a){
    this.age = a;
}//end

public Employee (String n,int age,String dept){

    this.name = n;
    this.age = age;
    this.department = dept;

}//end employee

} //结束课

这是我的主要方法中的代码：

public class Company {


public static void main(String [] args){

    Employee[] e = new Employee[13];

    e[0] = new Employee("Counting Guru",55,"Accounting");
    e[1] = new Employee("Counting Pro",45,"Accounting");
    e[2] = new Employee("Counting Savvy",40,"Accounting");
    e[3] = new Employee("Counting Novice",25,"Accounting");
    e[4] = new Employee("Sales Guru",50,"Marketing");
    e[5] = new Employee("Sales Pro",48,"Marketing");
    e[6] = new Employee("Sales Savvy",38,"Marketing");
    e[7] = new Employee("Hiring Guru",58,"Human Resrouces");
    e[8] = new Employee("Hiring Pro",47,"Human Resrouces");
    e[9] = new Employee("Hacking Pro",47,"Information Systems");
    e[10] = new Employee("Hacking Guru",51,"Information Systems");
    e[11] = new Employee("Hacking Savvy",38,"Information Systems");
    e[12] = new Employee("Hacking Novice",23,"Information Systems");


    for(int i = 0;i<e.length;i++){
        System.out.println(e[i]);

    }//end 
}//end main
}//end company

Answer 1

将toString()放在Employee类中，可能上面有@Override标记。

@Override
public String toString() {
    return name + ", " + age + ", " + department;
}

Answer 2

class Employee {
    @Override
    public String toString() {
        return String.format("[Employee name=%s, age=%d, department=%s]",
            name, age, department);
    }
}

现在只需循环遍历员工数组，然后按原样打印员工对象。

如何打印出具有参数的对象数组？

2 个答案: