implements

"implements" 是Java编程语言中的一个关键字，用于实现接口。实现接口意味着类必须实现接口中定义的所有方法。这可以通过在类声明中使用 "implements" 关键字来实现。例如：

public class MyClass implements MyInterface {
  // class definition
}

在上面的例子中，"MyClass" 类实现了 "MyInterface" 接口中定义的所有方法。

相关问题

implements Serializable

The "implements Serializable" statement is used to indicate that a class in Java can be serialized, which means it can be converted into a stream of bytes that can be saved to a file or sent over a network. This allows the object to be reconstructed later, possibly on a different machine or at a different time, while preserving its state.

To implement serialization, a class needs to implement the Serializable interface, which is a marker interface with no methods. This means that the class only needs to declare that it implements Serializable, and the serialization mechanism will automatically handle the rest.

Here is an example of a class that implements Serializable:

public class Person implements Serializable {
  private String name;
  private int age;
  
  public Person(String name, int age) {
    this.name = name;
    this.age = age;
  }
  
  public String getName() {
    return name;
  }
  
  public int getAge() {
    return age;
  }
}

In this example, the Person class has two fields (name and age) and a constructor and two getter methods. By implementing Serializable, this class can now be serialized and deserialized using Java's built-in serialization mechanism.

implements comparable

实现 "Comparable" 是一种Java接口，用于指示类可以进行对象比较。 如果一个类实现了 "Comparable" 接口，就必须实现其中的 compareTo() 方法，以定义该类的对象之间的比较方式。通过实现 "Comparable" 接口，可以轻松地对对象进行排序和搜索操作。