我只是做了一个小例子。我写了一个带有List的类，并使用reflection设置了一个值：

public class ABC {

    public static List entityList = new ArrayList();

    public void method() {
        System.out.println(entityList);
    }
}

junit测试

@ExtendWith(MockitoExtension.class)
class ABCTest {

    @InjectMocks
    ABC abc;

    @Test
    void myTest() throws NoSuchFieldException, IllegalAccessException {
        List<ABC> staticEntityList = List.of(new ABC(), new ABC());

// Using reflection to set the value of entityList
        Field entityListField = ABC.class.getDeclaredField("entityList");
        entityListField.setAccessible(true);
        entityListField.set(abc, staticEntityList);
        abc.method();

    }
}

所以它的大小变成了