Package Summary Overview Summary

### class:AbstractScriptEngine [NONE]
- All Implemented Interfaces: ScriptEngine
      public abstract class AbstractScriptEngine
      extends Object
      implements ScriptEngine
Provides a standard implementation for several of the variants of the `eval` method. `eval(Reader)` `eval(String)` `eval(String, Bindings)` `eval(Reader, Bindings)` are implemented using the abstract methods `eval(Reader,ScriptContext)` or `eval(String, ScriptContext)` with a `SimpleScriptContext`. A `SimpleScriptContext` is used as the default `ScriptContext` of the `AbstractScriptEngine`.. Since: 1.6

### field:context [NONE]
- #### context
      protected ScriptContext context
The default `ScriptContext` of this `AbstractScriptEngine`.

### constructor:AbstractScriptEngine() [NONE]
- #### AbstractScriptEngine
      public AbstractScriptEngine()
Creates a new instance of AbstractScriptEngine using a `SimpleScriptContext` as its default `ScriptContext`.

### constructor:AbstractScriptEngine(javax.script.Bindings) [NONE]
- #### AbstractScriptEngine
      public AbstractScriptEngine(Bindings n)
Creates a new instance using the specified `Bindings` as the `ENGINE_SCOPE` `Bindings` in the protected `context` field. Parameters: `n` - The specified `Bindings`. Throws: `NullPointerException` - if n is null.

### method:setContext(javax.script.ScriptContext) [NONE]
- #### setContext
      public void setContext(ScriptContext ctxt)
Sets the value of the protected `context` field to the specified `ScriptContext`. Specified by: `setContext` in interface `ScriptEngine` Parameters: `ctxt` - The specified `ScriptContext`. Throws: `NullPointerException` - if ctxt is null.

### method:getContext() [NONE]
- #### getContext
      public ScriptContext getContext()
Returns the value of the protected `context` field. Specified by: `getContext` in interface `ScriptEngine` Returns: The value of the protected `context` field.

### method:getBindings(int) [NONE]
- #### getBindings
      public Bindings getBindings(int scope)
Returns the `Bindings` with the specified scope value in the protected `context` field. Specified by: `getBindings` in interface `ScriptEngine` Parameters: `scope` - The specified scope Returns: The corresponding `Bindings`. Throws: `IllegalArgumentException` - if the value of scope is invalid for the type the protected `context` field.

### method:setBindings(javax.script.Bindings, int) [NONE]
- #### setBindings
      public void setBindings(Bindings bindings,
                              int scope)
Sets the `Bindings` with the corresponding scope value in the `context` field. Specified by: `setBindings` in interface `ScriptEngine` Parameters: `bindings` - The specified `Bindings`. `scope` - The specified scope. Throws: `IllegalArgumentException` - if the value of scope is invalid for the type the `context` field. `NullPointerException` - if the bindings is null and the scope is `ScriptContext.ENGINE_SCOPE`

### method:put(java.lang.String, java.lang.Object) [NONE]
- #### put
      public void put(String key,
                      Object value)
Sets the specified value with the specified key in the `ENGINE_SCOPE` `Bindings` of the protected `context` field. Specified by: `put` in interface `ScriptEngine` Parameters: `key` - The specified key. `value` - The specified value. Throws: `NullPointerException` - if key is null. `IllegalArgumentException` - if key is empty.

### method:get(java.lang.String) [NONE]
- #### get
      public Object get(String key)
Gets the value for the specified key in the `ENGINE_SCOPE` of the protected `context` field. Specified by: `get` in interface `ScriptEngine` Parameters: `key` - The key whose value is to be returned Returns: The value for the specified key. Throws: `NullPointerException` - if key is null. `IllegalArgumentException` - if key is empty.

### method:eval(java.io.Reader, javax.script.Bindings) [NONE]
- #### eval
      public Object eval(Reader reader,
                         Bindings bindings)
                  throws ScriptException
`eval(Reader, Bindings)` calls the abstract `eval(Reader, ScriptContext)` method, passing it a `ScriptContext` whose Reader, Writers and Bindings for scopes other that `ENGINE_SCOPE` are identical to those members of the protected `context` field. The specified `Bindings` is used instead of the `ENGINE_SCOPE` `Bindings` of the `context` field. Specified by: `eval` in interface `ScriptEngine` Parameters: `reader` - A `Reader` containing the source of the script. `bindings` - A `Bindings` to use for the `ENGINE_SCOPE` while the script executes. Returns: The return value from `eval(Reader, ScriptContext)` Throws: `ScriptException` - if an error occurs in script. `NullPointerException` - if any of the parameters is null.

### method:eval(java.lang.String, javax.script.Bindings) [NONE]
- #### eval
      public Object eval(String script,
                         Bindings bindings)
                  throws ScriptException
Same as `eval(Reader, Bindings)` except that the abstract `eval(String, ScriptContext)` is used. Specified by: `eval` in interface `ScriptEngine` Parameters: `script` - A `String` containing the source of the script. `bindings` - A `Bindings` to use as the `ENGINE_SCOPE` while the script executes. Returns: The return value from `eval(String, ScriptContext)` Throws: `ScriptException` - if an error occurs in script. `NullPointerException` - if any of the parameters is null.

### method:eval(java.io.Reader) [NONE]
- #### eval
      public Object eval(Reader reader)
                  throws ScriptException
`eval(Reader)` calls the abstract `eval(Reader, ScriptContext)` passing the value of the `context` field. Specified by: `eval` in interface `ScriptEngine` Parameters: `reader` - A `Reader` containing the source of the script. Returns: The return value from `eval(Reader, ScriptContext)` Throws: `ScriptException` - if an error occurs in script. `NullPointerException` - if any of the parameters is null.

### method:eval(java.lang.String) [NONE]
- #### eval
      public Object eval(String script)
                  throws ScriptException
Same as `eval(Reader)` except that the abstract `eval(String, ScriptContext)` is used. Specified by: `eval` in interface `ScriptEngine` Parameters: `script` - A `String` containing the source of the script. Returns: The return value from `eval(String, ScriptContext)` Throws: `ScriptException` - if an error occurs in script. `NullPointerException` - if any of the parameters is null.

### method:getScriptContext(javax.script.Bindings) [NONE]
- #### getScriptContext
      protected ScriptContext getScriptContext(Bindings nn)
Returns a `SimpleScriptContext`. The `SimpleScriptContext`: Uses the specified `Bindings` for its `ENGINE_SCOPE` Uses the `Bindings` returned by the abstract `getGlobalScope` method as its `GLOBAL_SCOPE` Uses the Reader and Writer in the default `ScriptContext` of this `ScriptEngine` A `SimpleScriptContext` returned by this method is used to implement eval methods using the abstract `eval(Reader,Bindings)` and `eval(String,Bindings)` versions. Parameters: `nn` - Bindings to use for the `ENGINE_SCOPE` Returns: The `SimpleScriptContext`