How to use validate in java

validate() method triggers component validation to ensure that the data is valid and consistent, involving the following steps: Recalculating component and sub-component layout. Check data validity. Updated appearance. validate() is used when component size, data, or subcomponents change.

validate() Method in Java

validate() Method is used in Java AWT and Swing components to trigger the component's validation process. Validation refers to checking the state of a component and ensuring that it contains valid, consistent data.

Usage

validate() method is a member method of the component class. To trigger verification, simply call this method:

<code class="java">component.validate();</code>

Verification process

The verification process involves the following steps:

• Components and All its child components recalculate their layout.
• The component checks its data to ensure it is valid and consistent.
• The component and its subcomponents update their appearance.

When to use it

validate() method is usually used in the following situations:

• When the component size or position changes.
• When component data changes.
• When the subcomponent of the component changes.

Note

• validate() method does not perform the validation process immediately. It just marks it as an event in the component's event queue.
• The validation process of a component may involve a lot of calculations, so the validate() method should not be called frequently.
• If the component's parent component has not yet been validated, the validate() method will not trigger the validation process.

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