HeaderUtil (Apache Tomcat 8.5.57 API Documentation)

org.apache.tomcat.util.http

## Class HeaderUtil

- java.lang.Object
- - org.apache.tomcat.util.http.HeaderUtil

-     public class HeaderUtil
      extends Object

- - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `static String` | `toPrintableString(byte[] bytes, int offset, int len)` Converts an HTTP header line in byte form to a printable String.

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

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

- - ### Method Detail

    - #### toPrintableString

          public static String toPrintableString(byte[] bytes,
                                 int offset,
                                 int len)

      Converts an HTTP header line in byte form to a printable String. Bytes corresponding to visible ASCII characters will converted to those characters. All other bytes (0x00 to 0x1F, 0x7F to OxFF) will be represented in 0xNN form.
      Parameters:
        `bytes` - Contains an HTTP header line
        `offset` - The start position of the header line in the array
        `len` - The length of the HTTP header line
      Returns:
        A String with non-printing characters replaced by the 0xNN equivalent

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