Dart 继承

示例

// 父类
class Animal {
  String name;
 
  Animal(this.name);
 
  void sayName() {
    print('My name is $name');
  }
}
 
// 子类
class Dog extends Animal {
  Dog(String name) : super(name);
 
  void bark() {
    print('Woof woof!');
  }
}
 
void main() {
  Dog myDog = Dog('Buddy');
  
  myDog.sayName(); // 输出: My name is Buddy
  myDog.bark(); // 输出: Woof woof!
}