Enum SevenZMethod
- java.lang.Object
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- java.lang.Enum<SevenZMethod>
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- org.apache.commons.compress.archivers.sevenz.SevenZMethod
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- All Implemented Interfaces:
java.io.Serializable
,java.lang.Comparable<SevenZMethod>
public enum SevenZMethod extends java.lang.Enum<SevenZMethod>
The (partially) supported compression/encryption methods used in 7z archives.All methods with a _FILTER suffix are used as preprocessors with the goal of creating a better compression ratio with the compressor that comes next in the chain of methods. 7z will in general only allow them to be used together with a "real" compression method but Commons Compress doesn't enforce this.
The BCJ_ filters work on executable files for the given platform and convert relative addresses to absolute addresses in CALL instructions. This means they are only useful when applied to executables of the chosen platform.
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Enum Constant Summary
Enum Constants Enum Constant Description AES256SHA256
AES encryption with a key length of 256 bit using SHA256 for hashes - only supported when readingBCJ_ARM_FILTER
BCJ ARM platform.BCJ_ARM_THUMB_FILTER
BCJ ARM Thumb platform.BCJ_IA64_FILTER
BCJ I64 platform.BCJ_PPC_FILTER
BCJ PowerPC platform.BCJ_SPARC_FILTER
BCJ Sparc platform.BCJ_X86_FILTER
BCJ x86 platform version 1.BZIP2
BZIP2COPY
no compression at allDEFLATE
DeflateDEFLATE64
Deflate64DELTA_FILTER
Delta filter.LZMA
LZMA - only supported when readingLZMA2
LZMA2
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static SevenZMethod
valueOf(java.lang.String name)
Returns the enum constant of this type with the specified name.static SevenZMethod[]
values()
Returns an array containing the constants of this enum type, in the order they are declared.
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Enum Constant Detail
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COPY
public static final SevenZMethod COPY
no compression at all
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LZMA
public static final SevenZMethod LZMA
LZMA - only supported when reading
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LZMA2
public static final SevenZMethod LZMA2
LZMA2
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DEFLATE
public static final SevenZMethod DEFLATE
Deflate
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DEFLATE64
public static final SevenZMethod DEFLATE64
Deflate64- Since:
- 1.16
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BZIP2
public static final SevenZMethod BZIP2
BZIP2
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AES256SHA256
public static final SevenZMethod AES256SHA256
AES encryption with a key length of 256 bit using SHA256 for hashes - only supported when reading
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BCJ_X86_FILTER
public static final SevenZMethod BCJ_X86_FILTER
BCJ x86 platform version 1.- Since:
- 1.8
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BCJ_PPC_FILTER
public static final SevenZMethod BCJ_PPC_FILTER
BCJ PowerPC platform.- Since:
- 1.8
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BCJ_IA64_FILTER
public static final SevenZMethod BCJ_IA64_FILTER
BCJ I64 platform.- Since:
- 1.8
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BCJ_ARM_FILTER
public static final SevenZMethod BCJ_ARM_FILTER
BCJ ARM platform.- Since:
- 1.8
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BCJ_ARM_THUMB_FILTER
public static final SevenZMethod BCJ_ARM_THUMB_FILTER
BCJ ARM Thumb platform.- Since:
- 1.8
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BCJ_SPARC_FILTER
public static final SevenZMethod BCJ_SPARC_FILTER
BCJ Sparc platform.- Since:
- 1.8
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DELTA_FILTER
public static final SevenZMethod DELTA_FILTER
Delta filter.- Since:
- 1.8
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Method Detail
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values
public static SevenZMethod[] values()
Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:for (SevenZMethod c : SevenZMethod.values()) System.out.println(c);
- Returns:
- an array containing the constants of this enum type, in the order they are declared
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valueOf
public static SevenZMethod valueOf(java.lang.String name)
Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)- Parameters:
name
- the name of the enum constant to be returned.- Returns:
- the enum constant with the specified name
- Throws:
java.lang.IllegalArgumentException
- if this enum type has no constant with the specified namejava.lang.NullPointerException
- if the argument is null
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