SSIEcho (Apache Tomcat 8.5.55 API Documentation)

org.apache.catalina.ssi

## Class SSIEcho

- java.lang.Object
- - org.apache.catalina.ssi.SSIEcho

- All Implemented Interfaces:
    SSICommand

      public class SSIEcho
      extends Object
      implements SSICommand

  Return the result associated with the supplied Server Variable.
  Author:
    Bip Thelin, Paul Speed, Dan Sandberg, David Becker

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `protected static String` | `DEFAULT_ENCODING`
    `protected static String` | `MISSING_VARIABLE_VALUE`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `SSIEcho()`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `protected boolean` | `isValidEncoding(String encoding)`
    `long` | `process(SSIMediator ssiMediator, String commandName, String[] paramNames, String[] paramValues, PrintWriter writer)` Write the output of the command to the writer.

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

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

- - ### Field Detail

    - #### DEFAULT_ENCODING

          protected static final String DEFAULT_ENCODING

      See Also:
        Constant Field Values

    - #### MISSING_VARIABLE_VALUE

          protected static final String MISSING_VARIABLE_VALUE

      See Also:
        Constant Field Values

  - ### Constructor Detail

    - #### SSIEcho

          public SSIEcho()

  - ### Method Detail

    - #### process

          public long process(SSIMediator ssiMediator,
                     String commandName,
                     String[] paramNames,
                     String[] paramValues,
                     PrintWriter writer)

      Description copied from interface: `SSICommand`
      Write the output of the command to the writer.
      Specified by:
        `process` in interface `SSICommand`
      Parameters:
        `ssiMediator` - the ssi mediator
        `commandName` - the name of the actual command ( ie. echo )
        `paramNames` - The parameter names
        `paramValues` - The parameter values
        `writer` - the writer to output to
      Returns:
        the most current modified date resulting from any SSI commands
      See Also:
        `SSICommand`

    - #### isValidEncoding

          protected boolean isValidEncoding(String encoding)

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