Class HexDump
- java.lang.Object
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- org.apache.commons.io.HexDump
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public class HexDump extends java.lang.Object
Dumps data in hexadecimal format.Provides a single function to take an array of bytes and display it in hexadecimal form.
Provenance: POI.
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Field Summary
Fields Modifier and Type Field Description static java.lang.String
EOL
Deprecated.UseSystem.lineSeparator()
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Constructor Summary
Constructors Constructor Description HexDump()
Instances should NOT be constructed in standard programming.
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static void
dump(byte[] data, long offset, java.io.OutputStream stream, int index)
Dumps an array of bytes to an OutputStream.static void
dump(byte[] data, long offset, java.lang.Appendable appendable, int index, int length)
Dumps an array of bytes to an Appendable.static void
dump(byte[] data, java.lang.Appendable appendable)
Dumps an array of bytes to an Appendable.
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Method Detail
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dump
public static void dump(byte[] data, java.lang.Appendable appendable) throws java.io.IOException
Dumps an array of bytes to an Appendable. 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.- Parameters:
data
- the byte array to be dumpedappendable
- the Appendable to which the data is to be written- Throws:
java.io.IOException
- is thrown if anything goes wrong writing the data to appendablejava.lang.NullPointerException
- if the output appendable is null- Since:
- 2.12.0
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dump
public static void dump(byte[] data, long offset, java.lang.Appendable appendable, int index, int length) throws java.io.IOException, java.lang.ArrayIndexOutOfBoundsException
Dumps an array of bytes to an Appendable. 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.
- Parameters:
data
- the byte array to be dumpedoffset
- offset of the byte array within a larger entityappendable
- the Appendable to which the data is to be writtenindex
- initial index into the byte arraylength
- number of bytes to dump from the array- Throws:
java.io.IOException
- is thrown if anything goes wrong writing the data to appendablejava.lang.ArrayIndexOutOfBoundsException
- if the index or length is outside the data array's boundsjava.lang.NullPointerException
- if the output appendable is null- Since:
- 2.12.0
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dump
public static void dump(byte[] data, long offset, java.io.OutputStream stream, int index) throws java.io.IOException, java.lang.ArrayIndexOutOfBoundsException
Dumps 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.
- Parameters:
data
- the byte array to be dumpedoffset
- offset of the byte array within a larger entitystream
- the OutputStream to which the data is to be writtenindex
- initial index into the byte array- Throws:
java.io.IOException
- is thrown if anything goes wrong writing the data to streamjava.lang.ArrayIndexOutOfBoundsException
- if the index is outside the data array's boundsjava.lang.NullPointerException
- if the output stream is null
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