如何创建类的动态实例

class MyClass:
    def __init__(self, value):
        self.value = value

# 动态创建类的实例
instance = MyClass(10)
print(instance.value)  # 输出: 10

# 使用type动态创建类
DynamicClass = type('DynamicClass', (object,), {'value': 20})
dynamic_instance = DynamicClass()
print(dynamic_instance.value)  # 输出: 20

class MyClass {
    constructor(value) {
        this.value = value;
    }
}

// 动态创建类的实例
const instance = new MyClass(10);
console.log(instance.value);  // 输出: 10

public class MyClass {
    private int value;

    public MyClass(int value) {
        this.value = value;
    }

    public int getValue() {
        return value;
    }
}

// 动态创建类的实例
try {
    Class<?> clazz = Class.forName("MyClass");
    Constructor<?> constructor = clazz.getConstructor(int.class);
    Object instance = constructor.newInstance(10);
    System.out.println(((MyClass) instance).getValue());  // 输出: 10
} catch (Exception e) {
    e.printStackTrace();
}

public class MyClass
{
    public int Value { get; set; }

    public MyClass(int value)
    {
        Value = value;
    }
}

// 动态创建类的实例
Type type = Type.GetType("MyClass");
object instance = Activator.CreateInstance(type, 10);
Console.WriteLine(((MyClass)instance).Value);  // 输出: 10