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Java > Learn Java > What is Service Locator in java?
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What is Service Locator in java?

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The Service Locator abstracts the API lookup (naming) services, vendor dependencies, lookup complexities, and business object creation. Provides a simple interface to clients. This reduces the client's complexity. In addition, the same client or other clients can reuse the Service Locator.
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Object-oriented design can lead to the development of complex class structures with components that are dependent upon other types. If the dependent classes instantiate their dependencies directly they are said to be tightly coupled. This decreases the flexibility of the components and increases the...
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Object-oriented design can lead to the development of complex class structures with components that are dependent upon other types. If the dependent classes instantiate their dependencies directly they are said to be tightly coupled. This decreases the flexibility of the components and increases the effort required to change functionality and substitute types. Dependency injection design that decouple classes from their dependencies. The service locator design is an alternative approach for promoting loose coupling but does not require injection of dependencies via interfaces, constructors or properties. read less
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The service locator pattern is a design pattern used in software development to encapsulate the processes involved in obtaining a service with a strong abstraction layer. This pattern uses a central registry known as the "service locator", which on request returns the information necessary to perform...
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The service locator pattern is a design pattern used in software development to encapsulate the processes involved in obtaining a service with a strong abstraction layer. This pattern uses a central registry known as the "service locator", which on request returns the information necessary to perform a certain task etc read less
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MCA, BSC(H)(IT), 2 years diploma in advanced software Technology.

The service locator design pattern is used when we want to locate various services using JNDI lookup. Considering high cost of looking up JNDI for a service, Service Locator pattern makes use of caching technique. For the first time a service is required, Service Locator looks up in JNDI and caches the...
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The service locator design pattern is used when we want to locate various services using JNDI lookup. Considering high cost of looking up JNDI for a service, Service Locator pattern makes use of caching technique. For the first time a service is required, Service Locator looks up in JNDI and caches the service object. Further lookup or same service via Service Locator is done in its cache which improves the performance of application to great extent. Following are the entities of this type of design pattern. Service - Actual Service which will process the request. Reference of such service is to be looked upon in JNDI server. Context / Initial Context -JNDI Context, carries the reference to service used for lookup purpose. Service Locator - Service Locator is a single point of contact to get services by JNDI lookup, caching the services. Cache - Cache to store references of services to reuse them Client - Client is the object who invokes the services via ServiceLocator. read less
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The service locator design pattern is used when we want to locate various services using JNDI lookup. Considering high cost of looking up JNDI for a service, Service Locator pattern makes use of caching technique.
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Conducting online classes for java,j2ee,hibernate,spring and webservices

It is design pattern. Instead of exposing ur class to others just exposing one service class that contains to locating original class.
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IT Professional Trainer with 15 years of experience in IT Industry

The service locator design pattern is used when we want to locate various services using JNDI lookup. Considering high cost of looking up JNDI for a service, Service Locator pattern makes use of caching technique. For the first time a service is required, Service Locator looks up in JNDI and caches the...
read more
The service locator design pattern is used when we want to locate various services using JNDI lookup. Considering high cost of looking up JNDI for a service, Service Locator pattern makes use of caching technique. For the first time a service is required, Service Locator looks up in JNDI and caches the service object. Further lookup or same service via Service Locator is done in its cache which improves the performance of application to great extent. Following are the entities of this type of design pattern. read less
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Service Locator - Service Locator is a single point of contact to get services by JNDI lookup, caching the services. Cache - Cache to store references of services to reuse them Client - Client is the object who invokes the services via ServiceLocator. Implementation We're going to create a...
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Service Locator - Service Locator is a single point of contact to get services by JNDI lookup, caching the services. Cache - Cache to store references of services to reuse them Client - Client is the object who invokes the services via ServiceLocator. Implementation We're going to create a ServiceLocator,InitialContext, Cache, Service as various objects representing our entities.Service1 and Service2 represents concrete services. ServiceLocatorPatternDemo, our demo class is acting as a client here and will use ServiceLocator to demonstrate Service Locator Design Pattern. read less
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1.Service Locator is a J2EE Pattern. 2.Use a Service Locator object to abstract all JNDI usage and to hide the complexities of initial context creation, EJB home object lookup, and EJB object re-creation. Multiple clients can reuse the Service Locator object to reduce code complexity, provide a single...
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1.Service Locator is a J2EE Pattern. 2.Use a Service Locator object to abstract all JNDI usage and to hide the complexities of initial context creation, EJB home object lookup, and EJB object re-creation. Multiple clients can reuse the Service Locator object to reduce code complexity, provide a single point of control, and improve performance by providing a caching facility. read less
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It is a design pattern
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