Constants (Apache Tomcat 8.5.12 API Documentation)

org.apache.jasper

## Class Constants

- java.lang.Object
- - org.apache.jasper.Constants

-     public class Constants
      extends Object

  Some constants and other global data that are used by the compiler and the runtime.
  Author:
    Anil K. Vijendran, Harish Prabandham, Shawn Bayern, Mark Roth

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `static String` | `CATALINA_HOME_PROP` Name of the system property containing the tomcat product installation path
    `static int` | `DEFAULT_BUFFER_SIZE` Default size of the JSP buffer.
    `static int` | `DEFAULT_TAG_BUFFER_SIZE` Default size for the tag buffers.
    `static String` | `IE_PLUGIN_URL`
    `static boolean` | `IS_SECURITY_ENABLED` Has security been turned on?
    `static String` | `JSP_PACKAGE_NAME` The default package name for compiled jsp pages.
    `static String` | `JSP_SERVLET_BASE` The base class of the generated servlets.
    `static int` | `MAX_POOL_SIZE` Default tag handler pool size.
    `static String` | `NS_PLUGIN_URL` Default URLs to download the plugin for Netscape and IE.
    `static String` | `PRECOMPILE` The query parameter that causes the JSP engine to just pregenerated the servlet but not invoke it.
    `static String` | `SERVICE_METHOD_NAME` _jspService is the name of the method that is called by HttpJspBase.service().
    `static String` | `SERVLET_CLASSPATH` ServletContext attribute for classpath.
    `static String` | `SESSION_PARAMETER_NAME` The name of the path parameter used to pass the session identifier back and forth with the client.
    `static List<String>` | `STANDARD_IMPORTS`
    `static String` | `TAG_FILE_PACKAGE_NAME` The default package name for tag handlers generated from tag files
    `static String` | `TEMP_VARIABLE_NAME_PREFIX` Prefix to use for generated temporary variable names
    `static boolean` | `USE_INSTANCE_MANAGER_FOR_TAGS`
    `static String` | `XML_BLOCK_EXTERNAL_INIT_PARAM` Name of the ServletContext init-param that determines if the XML parsers will block the resolution of external entities.
    `static String` | `XML_VALIDATION_TLD_INIT_PARAM` Name of the ServletContext init-param that determines if the XML parsers used for *.tld files will be validating or not.

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `Constants()`

  - ### Method Summary

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

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

- - ### Field Detail

    - #### JSP_SERVLET_BASE

          public static final String JSP_SERVLET_BASE

      The base class of the generated servlets.

    - #### SERVICE_METHOD_NAME

          public static final String SERVICE_METHOD_NAME

      _jspService is the name of the method that is called by HttpJspBase.service(). This is where most of the code generated from JSPs go.

    - #### STANDARD_IMPORTS

          public static final List<String> STANDARD_IMPORTS

    - #### SERVLET_CLASSPATH

          public static final String SERVLET_CLASSPATH

      ServletContext attribute for classpath. This is tomcat specific. Other servlet engines may choose to support this attribute if they want to have this JSP engine running on them.

    - #### DEFAULT_BUFFER_SIZE

          public static final int DEFAULT_BUFFER_SIZE

      Default size of the JSP buffer.
      See Also:
        Constant Field Values

    - #### DEFAULT_TAG_BUFFER_SIZE

          public static final int DEFAULT_TAG_BUFFER_SIZE

      Default size for the tag buffers.
      See Also:
        Constant Field Values

    - #### MAX_POOL_SIZE

          public static final int MAX_POOL_SIZE

      Default tag handler pool size.
      See Also:
        Constant Field Values

    - #### PRECOMPILE

          public static final String PRECOMPILE

      The query parameter that causes the JSP engine to just pregenerated the servlet but not invoke it.

    - #### JSP_PACKAGE_NAME

          public static final String JSP_PACKAGE_NAME

      The default package name for compiled jsp pages.

    - #### TAG_FILE_PACKAGE_NAME

          public static final String TAG_FILE_PACKAGE_NAME

      The default package name for tag handlers generated from tag files

    - #### NS_PLUGIN_URL

          public static final String NS_PLUGIN_URL

      Default URLs to download the plugin for Netscape and IE.
      See Also:
        Constant Field Values

    - #### IE_PLUGIN_URL

          public static final String IE_PLUGIN_URL

      See Also:
        Constant Field Values

    - #### TEMP_VARIABLE_NAME_PREFIX

          public static final String TEMP_VARIABLE_NAME_PREFIX

      Prefix to use for generated temporary variable names

    - #### IS_SECURITY_ENABLED

          public static final boolean IS_SECURITY_ENABLED

      Has security been turned on?

    - #### USE_INSTANCE_MANAGER_FOR_TAGS

          public static final boolean USE_INSTANCE_MANAGER_FOR_TAGS

    - #### SESSION_PARAMETER_NAME

          public static final String SESSION_PARAMETER_NAME

      The name of the path parameter used to pass the session identifier back and forth with the client.

    - #### CATALINA_HOME_PROP

          public static final String CATALINA_HOME_PROP

      Name of the system property containing the tomcat product installation path
      See Also:
        Constant Field Values

    - #### XML_VALIDATION_TLD_INIT_PARAM

          public static final String XML_VALIDATION_TLD_INIT_PARAM

      Name of the ServletContext init-param that determines if the XML parsers used for *.tld files will be validating or not.

      This must be kept in sync with org.apache.catalina.Globals

      See Also:
        Constant Field Values

    - #### XML_BLOCK_EXTERNAL_INIT_PARAM

          public static final String XML_BLOCK_EXTERNAL_INIT_PARAM

      Name of the ServletContext init-param that determines if the XML parsers will block the resolution of external entities.

      This must be kept in sync with org.apache.catalina.Globals

      See Also:
        Constant Field Values

  - ### Constructor Detail

    - #### Constants

          public Constants()

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