Home/ Questions/Q 7019657
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-27T23:12:44+00:00

After manually swapping components via add and remove , I invoke validate() on the

  • 0

After manually swapping components via add and remove, I invoke validate() on the container. According to the documentation,

The validate method is used to cause a container to lay out its
subcomponents again. It should be invoked when this container’s
subcomponents are modified (added to or removed from the container, or
layout-related information changed) after the container has been
displayed.

The phrase “lay out its subcomponents again” makes me think that the container will resize itself accordingly, but it doesn’t. Instead, after invoking validate(), I need to invoke pack() as well in order to view all its subcomponents.

Why is this? Am I doing something wrong?

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    (may be due this ambiguity the description is changed in latest javaDoc )

    JavaDoc 7 is NOT saying,

    The validate method is used to cause a container to lay out its subcomponents again..

    so its only laying the components, whereas you need a pack() again.

    Note that pack() clearly says,

    Causes this Window to be sized to fit the preferred size and layouts of its subcomponents.

    • 0