W3cubDocs

Class UIDefaults.ProxyLazyValue

java.lang.Object

javax.swing.UIDefaults.ProxyLazyValue

All Implemented Interfaces:: UIDefaults.LazyValue

Enclosing class:: UIDefaults

public static class UIDefaults.ProxyLazyValue extends Object implements UIDefaults.LazyValue

This class provides an implementation of LazyValue which can be used to delay loading of the Class for the instance to be created. It also avoids creation of an anonymous inner class for the LazyValue subclass. Both of these improve performance at the time that a a Look and Feel is loaded, at the cost of a slight performance reduction the first time createValue is called (since Reflection APIs are used).

Since:: 1.3

Constructor Summary

Constructor	Description
`ProxyLazyValue(String c)`	Creates a `LazyValue` which will construct an instance when asked.
`ProxyLazyValue(String c, Object[] o)`	Creates a `LazyValue` which will construct an instance when asked.
`ProxyLazyValue(String c, String m)`	Creates a `LazyValue` which will construct an instance when asked.
`ProxyLazyValue(String c, String m, Object[] o)`	Creates a `LazyValue` which will construct an instance when asked.

Method Summary

Modifier and Type	Method	Description
`Object`	`createValue(UIDefaults table)`	Creates the value retrieved from the `UIDefaults` table.

Methods declared in class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

ProxyLazyValue

public ProxyLazyValue(String c)

Creates a LazyValue which will construct an instance when asked.

Parameters:: c - a String specifying the classname of the instance to be created on demand

ProxyLazyValue

public ProxyLazyValue(String c, String m)

Creates a LazyValue which will construct an instance when asked.

Parameters:: c - a String specifying the classname of the class containing a static method to be called for instance creation; m - a String specifying the static method to be called on class c

ProxyLazyValue

public ProxyLazyValue(String c, Object[] o)

Creates a LazyValue which will construct an instance when asked.

Parameters:: c - a String specifying the classname of the instance to be created on demand; o - an array of Objects to be passed as parameters to the constructor in class c

ProxyLazyValue

public ProxyLazyValue(String c, String m, Object[] o)

Creates a LazyValue which will construct an instance when asked.

Parameters:: c - a String specifying the classname of the class containing a static method to be called for instance creation.; m - a String specifying the static method to be called on class c; o - an array of Objects to be passed as parameters to the static method in class c

Method Details

createValue

public Object createValue(UIDefaults table)

Creates the value retrieved from the UIDefaults table. The object is created each time it is accessed.

Specified by:: createValue in interface UIDefaults.LazyValue
Parameters:: table - a UIDefaults table
Returns:: the created Object

© 1993, 2023, Oracle and/or its affiliates. All rights reserved.
Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
Various third party code in OpenJDK is licensed under different licenses (see Debian package).
Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.
https://docs.oracle.com/en/java/javase/21/docs/api/java.desktop/javax/swing/UIDefaults.ProxyLazyValue.html