如何创建对不可变类的可重新赋值引用？

import java.util.concurrent.atomic.AtomicReference;

public class ImmutableClassExample {
    private final String value;

    public ImmutableClassExample(String value) {
        this.value = value;
    }

    public String getValue() {
        return value;
    }

    public static void main(String[] args) {
        ImmutableClassExample immutableObj = new ImmutableClassExample("Initial value");
        AtomicReference<ImmutableClassExample> reference = new AtomicReference<>(immutableObj);

        // 修改引用指向的对象
        ImmutableClassExample newImmutableObj = new ImmutableClassExample("New value");
        reference.set(newImmutableObj);

        System.out.println(reference.get().getValue());  // 输出: New value
    }
}