public class ScriptEngineManager extends Object
ScriptEngineManager implements a discovery and instantiation
 mechanism for ScriptEngine classes and also maintains a
 collection of key/value pairs storing state shared by all engines created
 by the Manager. This class uses the service provider mechanism to enumerate all the
 implementations of ScriptEngineFactory. ScriptEngineManager provides a method to return a list of all these factories
 as well as utility methods which look up factories on the basis of language name, file extension
 and mime type.
 
 The Bindings of key/value pairs, referred to as the "Global Scope"  maintained
 by the manager is available to all instances of ScriptEngine created
 by the ScriptEngineManager.  The values in the Bindings are
 generally exposed in all scripts.
| Constructor and Description | 
|---|
| ScriptEngineManager()The effect of calling this constructor is the same as calling
  ScriptEngineManager(Thread.currentThread().getContextClassLoader()). | 
| ScriptEngineManager(ClassLoader loader)This constructor loads the implementations of
  ScriptEngineFactoryvisible to the givenClassLoaderusing the service provider mechanism.If loader is null, the script engine factories that are
 bundled with the platform and that are in the usual extension
 directories (installed extensions) are loaded. | 
| Modifier and Type | Method and Description | 
|---|---|
| Object | get(String key)Gets the value for the specified key in the Global Scope | 
| Bindings | getBindings()getBindingsreturns the value of theglobalScopefield. | 
| ScriptEngine | getEngineByExtension(String extension)Look up and create a  ScriptEnginefor a given extension. | 
| ScriptEngine | getEngineByMimeType(String mimeType)Look up and create a  ScriptEnginefor a given mime type. | 
| ScriptEngine | getEngineByName(String shortName)Looks up and creates a  ScriptEnginefor a given  name. | 
| List<ScriptEngineFactory> | getEngineFactories()Returns a list whose elements are instances of all the  ScriptEngineFactoryclasses
 found by the discovery mechanism. | 
| void | put(String key,
   Object value)Sets the specified key/value pair in the Global Scope. | 
| void | registerEngineExtension(String extension,
                       ScriptEngineFactory factory)Registers a  ScriptEngineFactoryto handle an extension. | 
| void | registerEngineMimeType(String type,
                      ScriptEngineFactory factory)Registers a  ScriptEngineFactoryto handle a mime type. | 
| void | registerEngineName(String name,
                  ScriptEngineFactory factory)Registers a  ScriptEngineFactoryto handle a language
 name. | 
| void | setBindings(Bindings bindings)setBindingsstores the specifiedBindingsin theglobalScopefield. | 
public ScriptEngineManager()
ScriptEngineManager(Thread.currentThread().getContextClassLoader()).Thread.getContextClassLoader()public ScriptEngineManager(ClassLoader loader)
ScriptEngineFactory visible to the given
 ClassLoader using the service provider mechanism.null, the script engine factories that are
 bundled with the platform and that are in the usual extension
 directories (installed extensions) are loaded. loader - ClassLoader used to discover script engine factories.public void setBindings(Bindings bindings)
setBindings stores the specified Bindings
 in the globalScope field. ScriptEngineManager sets this
 Bindings as global bindings for ScriptEngine
 objects created by it.bindings - The specified BindingsIllegalArgumentException - if bindings is null.public Bindings getBindings()
getBindings returns the value of the globalScope field.
 ScriptEngineManager sets this Bindings as global bindings for
 ScriptEngine objects created by it.public void put(String key, Object value)
key - Key to setvalue - Value to set.NullPointerException - if key is null.IllegalArgumentException - if key is empty string.public Object get(String key)
key - The key whose value is to be returned.public ScriptEngine getEngineByName(String shortName)
ScriptEngine for a given  name.
 The algorithm first searches for a ScriptEngineFactory that has been
 registered as a handler for the specified name using the registerEngineName
 method.
 ScriptEngineFactory instances
 stored by the constructor for one with the specified name.  If a ScriptEngineFactory
 is found by either method, it is used to create instance of ScriptEngine.shortName - The short name of the ScriptEngine implementation.
 returned by the getNames method of its ScriptEngineFactory.ScriptEngine created by the factory located in the search.  Returns null
 if no such factory was found.  The ScriptEngineManager sets its own globalScope
 Bindings as the GLOBAL_SCOPE Bindings of the newly
 created ScriptEngine.NullPointerException - if shortName is null.public ScriptEngine getEngineByExtension(String extension)
ScriptEngine for a given extension.  The algorithm
 used by getEngineByName is used except that the search starts
 by looking for a ScriptEngineFactory registered to handle the
 given extension using registerEngineExtension.extension - The given extensionnull
 if not found.NullPointerException - if extension is null.public ScriptEngine getEngineByMimeType(String mimeType)
ScriptEngine for a given mime type.  The algorithm
 used by getEngineByName is used except that the search starts
 by looking for a ScriptEngineFactory registered to handle the
 given mime type using registerEngineMimeType.mimeType - The given mime typenull
 if not found.NullPointerException - if mimeType is null.public List<ScriptEngineFactory> getEngineFactories()
ScriptEngineFactory classes
 found by the discovery mechanism.ScriptEngineFactorys.public void registerEngineName(String name, ScriptEngineFactory factory)
ScriptEngineFactory to handle a language
 name.  Overrides any such association found using the Discovery mechanism.name - The name to be associated with the ScriptEngineFactory.factory - The class to associate with the given name.NullPointerException - if any of the parameters is null.public void registerEngineMimeType(String type, ScriptEngineFactory factory)
ScriptEngineFactory to handle a mime type.
 Overrides any such association found using the Discovery mechanism.type - The mime type  to be associated with the
 ScriptEngineFactory.factory - The class to associate with the given mime type.NullPointerException - if any of the parameters is null.public void registerEngineExtension(String extension, ScriptEngineFactory factory)
ScriptEngineFactory to handle an extension.
 Overrides any such association found using the Discovery mechanism.extension - The extension type  to be associated with the
 ScriptEngineFactory.factory - The class to associate with the given extension.NullPointerException - if any of the parameters is null. Submit a bug or feature 
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