| Name | Description | Type | Package | Framework |
| AbstractDecorator | Templated decorator. | Class | ro.isdc.wro.util | Wro4J |
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| Base64 | Encodes and decodes to and from Base64 notation. | Class | ro.isdc.wro.util | Wro4J |
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| Base64 .InputStream | A Base64. | Class | ro.isdc.wro.util | Wro4J |
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| Base64 .OutputStream | A Base64. | Class | ro.isdc.wro.util | Wro4J |
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| ConfigurableProvider | Bring all providers in a single place. | Interface | ro.isdc.wro.util.provider | Wro4J |
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| ConfigurableProviderSupport | Default implementation of ConfigurableProvider which provides nothing by default. | Class | ro.isdc.wro.util.provider | Wro4J |
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| DefaultConfigurableProvider | Default implementation of ConfigurableProviderSupport which contributes with components from core module. | Class | ro.isdc.wro.util.provider | Wro4J |
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| DestroyableLazyInitializer | A subclass of LazyInitializer allows to destroy the created object. | Class | ro.isdc.wro.util | Wro4J |
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| Function | Determines an output value based on an input value. | Interface | ro.isdc.wro.util | Wro4J |
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| LazyInitializer | A clone of LazyInitializer, which doesn't throw any checked exception when get method is invoked. | Class | ro.isdc.wro.util | Wro4J |
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| ObjectDecorator | Describe a class which acts as a decorator. | Interface | ro.isdc.wro.util | Wro4J |
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| ObjectFactory | | Interface | ro.isdc.wro.util | Wro4J |
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| Ordered | Classes implementing this interface signal to the classes that load them that order is significant. | Interface | ro.isdc.wro.util | Wro4J |
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| ProviderFinder | Helps to find available providers of any supported type. | Class | ro.isdc.wro.util.provider | Wro4J |
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| ProxyFactory | An ObjectFactory used to create Proxy for objects initialized by provided LazyInitializer's. | Class | ro.isdc.wro.util | Wro4J |
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| RegexpProperties | Used to overcome the limitation of Properties class when dealing with regular expressions read from properties file. | Class | ro.isdc.wro.util | Wro4J |
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| SchedulerHelper | Encapsulates the logic which handles scheduler creation and destroy. | Class | ro.isdc.wro.util | Wro4J |
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| StopWatch | Simple stop watch, allowing for timing of a number of tasks, exposing total running time and running time for each Conceals use of System. | Class | ro.isdc.wro.util | Wro4J |
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| StopWatch .TaskInfo | Inner class to hold data about one task executed within the stop watch. | Class | ro.isdc.wro.util | Wro4J |
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| StringUtils | StringUtils Utility class. | Class | ro.isdc.wro.util | Wro4J |
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| Transformer | Transform some an object of some type to another object of the same type. | Interface | ro.isdc.wro.util | Wro4J |
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| Transformers | Contains factory methods for creating Transformer object. | Class | ro.isdc.wro.util | Wro4J |
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| UnclosableBufferedInputStream | An input stream which allows to be read multiple times. | Class | ro.isdc.wro.util.io | Wro4J |
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| WroTestUtils | | Class | ro.isdc.wro.util | Wro4J |
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| WroUtil | | Class | ro.isdc.wro.util | Wro4J |