How many classes can a class inherit in Java?

A Java class can only inherit one direct parent class, but can indirectly inherit any number of parent classes.

How many classes can a class inherit at most in Java:

A class can only inherit one Direct parent class, but this parent class can indirectly inherit multiple parent classes. Therefore, a class can inherit from any number of indirect parent classes.

Direct inheritance:

• A class can only inherit directly from another class, which is called its direct parent class or super class.
• Direct inheritance uses the extends keyword.
• The direct parent class determines the type and characteristics of the class.

Indirect inheritance:

• When a class inherits another class, it also indirectly inherits the parent class of that class.
• Indirect inheritance is implemented through the inheritance chain.
• A class can have multiple indirect parent classes, but only one direct parent class.

Example:

<code class="java">class Animal {
    // 动物的属性和方法
}

class Dog extends Animal {
    // 狗的属性和方法
}

class GoldenRetriever extends Dog {
    // 金毛猎犬的属性和方法
}</code>

• GoldenRetriever Directly inherits Dog, indirectly inherits Animal .
• Dog directly inherits Animal.

Therefore, GoldenRetriever has access to all properties and methods defined in Animal and Dog.

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