如何将T转换为对象

var obj = { key: T };

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

obj = MyClass(T)

public class MyClass {
    private T key;

    public MyClass(T key) {
        this.key = key;
    }

    // 其他方法和属性...
}

MyClass obj = new MyClass(T);