javax.script

## Class CompiledScript

- java.lang.Object
- - javax.script.CompiledScript

-     public abstract class CompiledScript
      extends Object

  Extended by classes that store results of compilations. State might be stored in the form of Java classes, Java class files or scripting language opcodes. The script may be executed repeatedly without reparsing.
  Each `CompiledScript` is associated with a `ScriptEngine` -- A call to an `eval` method of the `CompiledScript` causes the execution of the script by the `ScriptEngine`. Changes in the state of the `ScriptEngine` caused by execution of tne `CompiledScript` may visible during subsequent executions of scripts by the engine.
  Since:
    1.6

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `CompiledScript()`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `Object` | `eval()` Executes the program stored in the `CompiledScript` object.
    `Object` | `eval(Bindings bindings)` Executes the program stored in the `CompiledScript` object using the supplied `Bindings` of attributes as the `ENGINE_SCOPE` of the associated `ScriptEngine` during script execution.
    `abstract Object` | `eval(ScriptContext context)` Executes the program stored in this `CompiledScript` object.
    `abstract ScriptEngine` | `getEngine()` Returns the `ScriptEngine` whose `compile` method created this `CompiledScript`.

    - ### Methods inherited from class java.lang.Object

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

- - ### Constructor Detail

    - #### CompiledScript

          public CompiledScript()

  - ### Method Detail

    - #### eval

          public abstract Object eval(ScriptContext context)
                               throws ScriptException

      Executes the program stored in this `CompiledScript` object.
      Parameters:
        `context` - A `ScriptContext` that is used in the same way as the `ScriptContext` passed to the `eval` methods of `ScriptEngine`.
      Returns:
        The value returned by the script execution, if any. Should return `null` if no value is returned by the script execution.
      Throws:
        `ScriptException` - if an error occurs.
        `NullPointerException` - if context is null.

    - #### eval

          public Object eval(Bindings bindings)
                      throws ScriptException

      Executes the program stored in the `CompiledScript` object using the supplied `Bindings` of attributes as the `ENGINE_SCOPE` of the associated `ScriptEngine` during script execution. If bindings is null, then the effect of calling this method is same as that of eval(getEngine().getContext()).

      . The `GLOBAL_SCOPE` `Bindings`, `Reader` and `Writer` associated with the default `ScriptContext` of the associated `ScriptEngine` are used.

      Parameters:
        `bindings` - The bindings of attributes used for the `ENGINE_SCOPE`.
      Returns:
        The return value from the script execution
      Throws:
        `ScriptException` - if an error occurs.

    - #### eval

          public Object eval()
                      throws ScriptException

      Executes the program stored in the `CompiledScript` object. The default `ScriptContext` of the associated `ScriptEngine` is used. The effect of calling this method is same as that of eval(getEngine().getContext()).
      Returns:
        The return value from the script execution
      Throws:
        `ScriptException` - if an error occurs.

    - #### getEngine

          public abstract ScriptEngine getEngine()

      Returns the `ScriptEngine` whose `compile` method created this `CompiledScript`. The `CompiledScript` will execute in this engine.
      Returns:
        The `ScriptEngine` that created this `CompiledScript`

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