Java最佳实践：遵循面向对象设计原则，提高代码质量实例

原创我不是女神ヾ 2024-09-12 00:57 87阅读 0赞

在Java编程中，遵循面向对象设计原则是非常重要的。以下是一个遵循这些原则的实例：

1. 封装（Encapsulation）：
```java
public class Employee {
    private String name;
    private int id;
    // getter and setter methods
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    // rest of the code for id and other methods
}
```
2. 继承（Inheritance）：
```java
// Assuming we have a Boss class
public class Boss extends Employee {
    private double salary;

// Getter and Setter for salary
    public double getSalary() {
        return salary;
    }
    public void setSalary(double salary) {
        this.salary = salary;
    }

// Rest of the code specific to boss
}
```
3. 多态（Polymorphism）：
```java
// Use the polymorphic method in Employee class
public class Main {
    public static void main(String[] args) {
        Employee employee1 = new Employee();
        employee1.setName("John");

Employee employee2 = new Boss();
        employee2.setName("Alice");
        employee2.setSalary(8000);

System.out.println("Employee 1: " + employee1.getName());
        System.out.println("Employee 2 (Boss): " + employee2.getName() + " - Salary: " + employee2.getSalary());

// Test polymorphic method
        String result = employee1.getAddress(employee2));
        System.out.println("Address using polymorphism: " + result);
    }
}
```
这个例子展示了如何遵循面向对象设计原则，如封装、继承和多态，来编写高质量的Java代码。