Class HexUtil

java.lang.Object

org.snmp4j.mcp.tool.snmp.HexUtil

public final class HexUtil
extends Object

Hex-string conversion helpers shared by the SNMP byte-level tools (snmp_message_ber, snmp_send_raw, snmp_encode_ber).

Since:

0.1.0

Method Summary

Modifier and Type	Method	Description
static byte[]	parseHex(String hex)	Parses a hex string into a byte array.
static String	toHex(byte[] bytes)	Formats bytes as a lower-case, colon-delimited hex string (e.g.

Methods inherited from class Object

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

Method Details

parseHex

public static byte[] parseHex(String hex)

Parses a hex string into a byte array. Accepts colon-delimited bytes (e.g. "30:73:02"), plain hex digits ("307302"), and "0x"-prefixed bytes ("0x30:0x73"). Whitespace is ignored.

Parameters:

hex - the hex string

Returns:

the decoded bytes (empty array for an empty/whitespace input)

Throws:

IllegalArgumentException - if the normalized string has an odd number of digits or contains a non-hex character

toHex

public static String toHex(byte[] bytes)

Formats bytes as a lower-case, colon-delimited hex string (e.g. "30:73:02"), matching the display style used by the BER tools.

Parameters:

bytes - the bytes to format (may be empty)

Returns:

the colon-delimited hex string; empty string for empty input