org.apache.commons.io

类 HexDump

java.lang.Object

org.apache.commons.io.HexDump

public class HexDump
extends Object

Dumps data in hexadecimal format.

Provides a single function to take an array of bytes and display it in hexadecimal form.

Origin of code: POI.

字段概要

字段

限定符和类型	字段和说明
static String	EOL The line-separator (initializes to "line.separator" system property.

构造器概要

构造器

构造器和说明
HexDump() Instances should NOT be constructed in standard programming.

方法概要

限定符和类型	方法和说明
static void	dump(byte[] data, long offset, OutputStream stream, int index) Dump an array of bytes to an OutputStream.

从类继承的方法 java.lang.Object

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

字段详细资料

EOL

public static final String EOL

The line-separator (initializes to "line.separator" system property.

构造器详细资料

HexDump

public HexDump()

Instances should NOT be constructed in standard programming.

方法详细资料

dump

public static void dump(byte[] data,
                        long offset,
                        OutputStream stream,
                        int index)
                 throws IOException,
                        ArrayIndexOutOfBoundsException,
                        IllegalArgumentException

Dump an array of bytes to an OutputStream. The output is formatted for human inspection, with a hexadecimal offset followed by the hexadecimal values of the next 16 bytes of data and the printable ASCII characters (if any) that those bytes represent printed per each line of output.

The offset argument specifies the start offset of the data array within a larger entity like a file or an incoming stream. For example, if the data array contains the third kibibyte of a file, then the offset argument should be set to 2048. The offset value printed at the beginning of each line indicates where in that larger entity the first byte on that line is located.

All bytes between the given index (inclusive) and the end of the data array are dumped.

参数:

data - the byte array to be dumped

offset - offset of the byte array within a larger entity

stream - the OutputStream to which the data is to be written

index - initial index into the byte array

抛出:

IOException - is thrown if anything goes wrong writing the data to stream

ArrayIndexOutOfBoundsException - if the index is outside the data array's bounds

IllegalArgumentException - if the output stream is null