在 Java 中创建类似结构的数据结构 [英] Creating struct like data structure in Java

问题描述

我是 Java 新手，我正在尝试找到一种方法来存储 C 中的结构等信息.例如，我想让一个程序雇用员工.它将从用户那里获取名字、姓氏和 ID 号并将其存储.然后，用户可以根据条件查看该信息(例如，如果数据库有超过 1 名员工).任何人都可以建议这样做的最佳方法吗?

I am new to Java and I am trying to find out a way to store information like a struct in C. Say for example I want to have a program hire employees. It would take from the user a first name, last name, and id number and would store it. The user could then view that information based off a condition (if the database had more than 1 employee for example). Can any suggest the best way for doing this?

推荐答案

C 中的结构体就像 Java 中的类一样，而且功能更强大，因为 Java 中的类可以包含方法，而 C++ 可以.您创建一个新类.例如:

A struct in C just like a class in Java and much more powerful, because class in Java can contain method, and C++ does. You create a new class. For example :

   class Employee {
       private String name;
       private int code;

   // constructor
   public Employee(String name, int code) {
      this.name = name;
      this.code = code;
   }

       // getter
       public String getName() { return name; }
       public int getCode() { return code; }
       // setter

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

当你想创建多个员工时，就像在 C 中一样创建数组:

And when you want to create multi employees, create array just like in C:

Employee[] arr = new Employee[100];  // new stands for create an array object
arr[0] = new Employee("Peter", 100); // new stands for create an employee object
arr[1] = new Employee("Mary", 90);

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