| Package | TC | CC | AC | Ca | Ce | A | I | D | V |
|---|---|---|---|---|---|---|---|---|---|
| org.apache.commons.compress.archivers | 6 | 3 | 3 | 8 | 9 | 50.0% | 52.999996% | 3.0% | 1 |
| org.apache.commons.compress.archivers.ar | 3 | 3 | 0 | 1 | 5 | 0.0% | 83.0% | 17.0% | 1 |
| org.apache.commons.compress.archivers.cpio | 5 | 4 | 1 | 1 | 5 | 20.0% | 83.0% | 3.0% | 1 |
| org.apache.commons.compress.archivers.dump | 19 | 19 | 0 | 1 | 5 | 0.0% | 83.0% | 17.0% | 1 |
| org.apache.commons.compress.archivers.jar | 3 | 3 | 0 | 1 | 7 | 0.0% | 88.0% | 12.0% | 1 |
| org.apache.commons.compress.archivers.tar | 8 | 7 | 1 | 1 | 8 | 12.0% | 89.0% | 1.0% | 1 |
| org.apache.commons.compress.archivers.zip | 47 | 41 | 6 | 4 | 10 | 13.0% | 71.0% | 16.0% | 1 |
| org.apache.commons.compress.changes | 7 | 6 | 1 | 0 | 6 | 14.0% | 100.0% | 14.0% | 1 |
| org.apache.commons.compress.compressors | 5 | 3 | 2 | 4 | 7 | 40.0% | 64.0% | 4.0% | 1 |
| org.apache.commons.compress.compressors.bzip2 | 9 | 7 | 2 | 1 | 4 | 22.0% | 80.0% | 2.0% | 1 |
| org.apache.commons.compress.compressors.gzip | 3 | 3 | 0 | 1 | 5 | 0.0% | 83.0% | 17.0% | 1 |
| org.apache.commons.compress.compressors.pack200 | 11 | 9 | 2 | 1 | 5 | 18.0% | 83.0% | 2.0% | 1 |
| org.apache.commons.compress.compressors.xz | 3 | 3 | 0 | 1 | 5 | 0.0% | 83.0% | 17.0% | 1 |
| org.apache.commons.compress.utils | 6 | 6 | 0 | 5 | 4 | 0.0% | 44.0% | 56.0% | 1 |
| Afferent Couplings | Efferent Couplings | Abstractness | Instability | Distance |
|---|---|---|---|---|
| 8 | 9 | 50.0% | 52.999996% | 3.0% |
| Abstract Classes | Concrete Classes | Used by Packages | Uses Packages |
|---|---|---|---|
| org.apache.commons.compress.archivers.ArchiveEntry org.apache.commons.compress.archivers.ArchiveInputStream org.apache.commons.compress.archivers.ArchiveOutputStream | org.apache.commons.compress.archivers.ArchiveException org.apache.commons.compress.archivers.ArchiveStreamFactory org.apache.commons.compress.archivers.Lister | org.apache.commons.compress.archivers.ar org.apache.commons.compress.archivers.cpio org.apache.commons.compress.archivers.dump org.apache.commons.compress.archivers.jar org.apache.commons.compress.archivers.tar org.apache.commons.compress.archivers.zip org.apache.commons.compress.changes org.apache.commons.compress.utils | java.io java.lang java.util org.apache.commons.compress.archivers.ar org.apache.commons.compress.archivers.cpio org.apache.commons.compress.archivers.dump org.apache.commons.compress.archivers.jar org.apache.commons.compress.archivers.tar org.apache.commons.compress.archivers.zip |
| Afferent Couplings | Efferent Couplings | Abstractness | Instability | Distance |
|---|---|---|---|---|
| 1 | 5 | 0.0% | 83.0% | 17.0% |
| Abstract Classes | Concrete Classes | Used by Packages | Uses Packages |
|---|---|---|---|
| None | org.apache.commons.compress.archivers.ar.ArArchiveEntry org.apache.commons.compress.archivers.ar.ArArchiveInputStream org.apache.commons.compress.archivers.ar.ArArchiveOutputStream | org.apache.commons.compress.archivers | java.io java.lang java.util org.apache.commons.compress.archivers org.apache.commons.compress.utils |
| Afferent Couplings | Efferent Couplings | Abstractness | Instability | Distance |
|---|---|---|---|---|
| 1 | 5 | 20.0% | 83.0% | 3.0% |
| Abstract Classes | Concrete Classes | Used by Packages | Uses Packages |
|---|---|---|---|
| org.apache.commons.compress.archivers.cpio.CpioConstants | org.apache.commons.compress.archivers.cpio.CpioArchiveEntry org.apache.commons.compress.archivers.cpio.CpioArchiveInputStream org.apache.commons.compress.archivers.cpio.CpioArchiveOutputStream org.apache.commons.compress.archivers.cpio.CpioUtil | org.apache.commons.compress.archivers | java.io java.lang java.util org.apache.commons.compress.archivers org.apache.commons.compress.utils |
| Afferent Couplings | Efferent Couplings | Abstractness | Instability | Distance |
|---|---|---|---|---|
| 1 | 5 | 0.0% | 83.0% | 17.0% |
| Abstract Classes | Concrete Classes | Used by Packages | Uses Packages |
|---|---|---|---|
| None | org.apache.commons.compress.archivers.dump.Dirent org.apache.commons.compress.archivers.dump.DumpArchiveConstants org.apache.commons.compress.archivers.dump.DumpArchiveConstants$COMPRESSION_TYPE org.apache.commons.compress.archivers.dump.DumpArchiveConstants$SEGMENT_TYPE org.apache.commons.compress.archivers.dump.DumpArchiveEntry org.apache.commons.compress.archivers.dump.DumpArchiveEntry$PERMISSION org.apache.commons.compress.archivers.dump.DumpArchiveEntry$TYPE org.apache.commons.compress.archivers.dump.DumpArchiveEntry$TapeSegmentHeader org.apache.commons.compress.archivers.dump.DumpArchiveException org.apache.commons.compress.archivers.dump.DumpArchiveInputStream org.apache.commons.compress.archivers.dump.DumpArchiveInputStream$1 org.apache.commons.compress.archivers.dump.DumpArchiveSummary org.apache.commons.compress.archivers.dump.DumpArchiveUtil org.apache.commons.compress.archivers.dump.InvalidFormatException org.apache.commons.compress.archivers.dump.ShortFileException org.apache.commons.compress.archivers.dump.TapeInputStream org.apache.commons.compress.archivers.dump.TapeInputStream$1 org.apache.commons.compress.archivers.dump.UnrecognizedFormatException org.apache.commons.compress.archivers.dump.UnsupportedCompressionAlgorithmException | org.apache.commons.compress.archivers | java.io java.lang java.util java.util.zip org.apache.commons.compress.archivers |
| Afferent Couplings | Efferent Couplings | Abstractness | Instability | Distance |
|---|---|---|---|---|
| 1 | 7 | 0.0% | 88.0% | 12.0% |
| Abstract Classes | Concrete Classes | Used by Packages | Uses Packages |
|---|---|---|---|
| None | org.apache.commons.compress.archivers.jar.JarArchiveEntry org.apache.commons.compress.archivers.jar.JarArchiveInputStream org.apache.commons.compress.archivers.jar.JarArchiveOutputStream | org.apache.commons.compress.archivers | java.io java.lang java.security.cert java.util.jar java.util.zip org.apache.commons.compress.archivers org.apache.commons.compress.archivers.zip |
| Afferent Couplings | Efferent Couplings | Abstractness | Instability | Distance |
|---|---|---|---|---|
| 1 | 8 | 12.0% | 89.0% | 1.0% |
| Abstract Classes | Concrete Classes | Used by Packages | Uses Packages |
|---|---|---|---|
| org.apache.commons.compress.archivers.tar.TarConstants | org.apache.commons.compress.archivers.tar.TarArchiveEntry org.apache.commons.compress.archivers.tar.TarArchiveInputStream org.apache.commons.compress.archivers.tar.TarArchiveOutputStream org.apache.commons.compress.archivers.tar.TarArchiveSparseEntry org.apache.commons.compress.archivers.tar.TarBuffer org.apache.commons.compress.archivers.tar.TarUtils org.apache.commons.compress.archivers.tar.TarUtils$1 | org.apache.commons.compress.archivers | java.io java.lang java.math java.nio java.util org.apache.commons.compress.archivers org.apache.commons.compress.archivers.zip org.apache.commons.compress.utils |
| Afferent Couplings | Efferent Couplings | Abstractness | Instability | Distance |
|---|---|---|---|---|
| 4 | 10 | 13.0% | 71.0% | 16.0% |
| Abstract Classes | Concrete Classes | Used by Packages | Uses Packages |
|---|---|---|---|
| org.apache.commons.compress.archivers.zip.AbstractUnicodeExtraField org.apache.commons.compress.archivers.zip.UnixStat org.apache.commons.compress.archivers.zip.ZipEncoding org.apache.commons.compress.archivers.zip.ZipEncodingHelper org.apache.commons.compress.archivers.zip.ZipExtraField org.apache.commons.compress.archivers.zip.ZipUtil | org.apache.commons.compress.archivers.zip.AsiExtraField org.apache.commons.compress.archivers.zip.ExtraFieldUtils org.apache.commons.compress.archivers.zip.ExtraFieldUtils$UnparseableExtraField org.apache.commons.compress.archivers.zip.FallbackZipEncoding org.apache.commons.compress.archivers.zip.GeneralPurposeBit org.apache.commons.compress.archivers.zip.JarMarker org.apache.commons.compress.archivers.zip.NioZipEncoding org.apache.commons.compress.archivers.zip.Simple8BitZipEncoding org.apache.commons.compress.archivers.zip.Simple8BitZipEncoding$Simple8BitChar org.apache.commons.compress.archivers.zip.UnicodeCommentExtraField org.apache.commons.compress.archivers.zip.UnicodePathExtraField org.apache.commons.compress.archivers.zip.UnparseableExtraFieldData org.apache.commons.compress.archivers.zip.UnrecognizedExtraField org.apache.commons.compress.archivers.zip.UnsupportedZipFeatureException org.apache.commons.compress.archivers.zip.UnsupportedZipFeatureException$Feature org.apache.commons.compress.archivers.zip.X5455_ExtendedTimestamp org.apache.commons.compress.archivers.zip.X7875_NewUnix org.apache.commons.compress.archivers.zip.Zip64ExtendedInformationExtraField org.apache.commons.compress.archivers.zip.Zip64Mode org.apache.commons.compress.archivers.zip.Zip64RequiredException org.apache.commons.compress.archivers.zip.ZipArchiveEntry org.apache.commons.compress.archivers.zip.ZipArchiveInputStream org.apache.commons.compress.archivers.zip.ZipArchiveInputStream$1 org.apache.commons.compress.archivers.zip.ZipArchiveInputStream$Buffer org.apache.commons.compress.archivers.zip.ZipArchiveInputStream$CurrentEntry org.apache.commons.compress.archivers.zip.ZipArchiveOutputStream org.apache.commons.compress.archivers.zip.ZipArchiveOutputStream$1 org.apache.commons.compress.archivers.zip.ZipArchiveOutputStream$CurrentEntry org.apache.commons.compress.archivers.zip.ZipArchiveOutputStream$UnicodeExtraFieldPolicy org.apache.commons.compress.archivers.zip.ZipConstants org.apache.commons.compress.archivers.zip.ZipEightByteInteger org.apache.commons.compress.archivers.zip.ZipEncodingHelper$SimpleEncodingHolder org.apache.commons.compress.archivers.zip.ZipFile org.apache.commons.compress.archivers.zip.ZipFile$1 org.apache.commons.compress.archivers.zip.ZipFile$2 org.apache.commons.compress.archivers.zip.ZipFile$BoundedInputStream org.apache.commons.compress.archivers.zip.ZipFile$NameAndComment org.apache.commons.compress.archivers.zip.ZipFile$OffsetEntry org.apache.commons.compress.archivers.zip.ZipLong org.apache.commons.compress.archivers.zip.ZipMethod org.apache.commons.compress.archivers.zip.ZipShort | org.apache.commons.compress.archivers org.apache.commons.compress.archivers.jar org.apache.commons.compress.archivers.tar org.apache.commons.compress.changes | java.io java.lang java.math java.nio java.nio.charset java.util java.util.concurrent java.util.zip org.apache.commons.compress.archivers org.apache.commons.compress.utils |
| Afferent Couplings | Efferent Couplings | Abstractness | Instability | Distance |
|---|---|---|---|---|
| 0 | 6 | 14.0% | 100.0% | 14.0% |
| Abstract Classes | Concrete Classes | Used by Packages | Uses Packages |
|---|---|---|---|
| org.apache.commons.compress.changes.ChangeSetPerformer$ArchiveEntryIterator | org.apache.commons.compress.changes.Change org.apache.commons.compress.changes.ChangeSet org.apache.commons.compress.changes.ChangeSetPerformer org.apache.commons.compress.changes.ChangeSetPerformer$ArchiveInputStreamIterator org.apache.commons.compress.changes.ChangeSetPerformer$ZipFileIterator org.apache.commons.compress.changes.ChangeSetResults | None | java.io java.lang java.util org.apache.commons.compress.archivers org.apache.commons.compress.archivers.zip org.apache.commons.compress.utils |
| Afferent Couplings | Efferent Couplings | Abstractness | Instability | Distance |
|---|---|---|---|---|
| 4 | 7 | 40.0% | 64.0% | 4.0% |
| Abstract Classes | Concrete Classes | Used by Packages | Uses Packages |
|---|---|---|---|
| org.apache.commons.compress.compressors.CompressorInputStream org.apache.commons.compress.compressors.CompressorOutputStream | org.apache.commons.compress.compressors.CompressorException org.apache.commons.compress.compressors.CompressorStreamFactory org.apache.commons.compress.compressors.FileNameUtil | org.apache.commons.compress.compressors.bzip2 org.apache.commons.compress.compressors.gzip org.apache.commons.compress.compressors.pack200 org.apache.commons.compress.compressors.xz | java.io java.lang java.util org.apache.commons.compress.compressors.bzip2 org.apache.commons.compress.compressors.gzip org.apache.commons.compress.compressors.pack200 org.apache.commons.compress.compressors.xz |
| Afferent Couplings | Efferent Couplings | Abstractness | Instability | Distance |
|---|---|---|---|---|
| 1 | 4 | 22.0% | 80.0% | 2.0% |
| Abstract Classes | Concrete Classes | Used by Packages | Uses Packages |
|---|---|---|---|
| org.apache.commons.compress.compressors.bzip2.BZip2Constants org.apache.commons.compress.compressors.bzip2.BZip2Utils | org.apache.commons.compress.compressors.bzip2.BZip2CompressorInputStream org.apache.commons.compress.compressors.bzip2.BZip2CompressorInputStream$Data org.apache.commons.compress.compressors.bzip2.BZip2CompressorOutputStream org.apache.commons.compress.compressors.bzip2.BZip2CompressorOutputStream$Data org.apache.commons.compress.compressors.bzip2.BlockSort org.apache.commons.compress.compressors.bzip2.CRC org.apache.commons.compress.compressors.bzip2.Rand | org.apache.commons.compress.compressors | java.io java.lang java.util org.apache.commons.compress.compressors |
| Afferent Couplings | Efferent Couplings | Abstractness | Instability | Distance |
|---|---|---|---|---|
| 1 | 5 | 0.0% | 83.0% | 17.0% |
| Abstract Classes | Concrete Classes | Used by Packages | Uses Packages |
|---|---|---|---|
| None | org.apache.commons.compress.compressors.gzip.GzipCompressorInputStream org.apache.commons.compress.compressors.gzip.GzipCompressorOutputStream org.apache.commons.compress.compressors.gzip.GzipUtils | org.apache.commons.compress.compressors | java.io java.lang java.util java.util.zip org.apache.commons.compress.compressors |
| Afferent Couplings | Efferent Couplings | Abstractness | Instability | Distance |
|---|---|---|---|---|
| 1 | 5 | 18.0% | 83.0% | 2.0% |
| Abstract Classes | Concrete Classes | Used by Packages | Uses Packages |
|---|---|---|---|
| org.apache.commons.compress.compressors.pack200.Pack200Strategy org.apache.commons.compress.compressors.pack200.StreamBridge | org.apache.commons.compress.compressors.pack200.InMemoryCachingStreamBridge org.apache.commons.compress.compressors.pack200.Pack200CompressorInputStream org.apache.commons.compress.compressors.pack200.Pack200CompressorInputStream$1 org.apache.commons.compress.compressors.pack200.Pack200CompressorOutputStream org.apache.commons.compress.compressors.pack200.Pack200Strategy$1 org.apache.commons.compress.compressors.pack200.Pack200Strategy$2 org.apache.commons.compress.compressors.pack200.Pack200Utils org.apache.commons.compress.compressors.pack200.TempFileCachingStreamBridge org.apache.commons.compress.compressors.pack200.TempFileCachingStreamBridge$1 | org.apache.commons.compress.compressors | java.io java.lang java.util java.util.jar org.apache.commons.compress.compressors |
| Afferent Couplings | Efferent Couplings | Abstractness | Instability | Distance |
|---|---|---|---|---|
| 1 | 5 | 0.0% | 83.0% | 17.0% |
| Abstract Classes | Concrete Classes | Used by Packages | Uses Packages |
|---|---|---|---|
| None | org.apache.commons.compress.compressors.xz.XZCompressorInputStream org.apache.commons.compress.compressors.xz.XZCompressorOutputStream org.apache.commons.compress.compressors.xz.XZUtils | org.apache.commons.compress.compressors | java.io java.lang java.util org.apache.commons.compress.compressors org.tukaani.xz |
| Afferent Couplings | Efferent Couplings | Abstractness | Instability | Distance |
|---|---|---|---|---|
| 5 | 4 | 0.0% | 44.0% | 56.0% |
| Abstract Classes | Concrete Classes | Used by Packages | Uses Packages |
|---|---|---|---|
| None | org.apache.commons.compress.utils.ArchiveUtils org.apache.commons.compress.utils.CharsetNames org.apache.commons.compress.utils.Charsets org.apache.commons.compress.utils.CountingInputStream org.apache.commons.compress.utils.CountingOutputStream org.apache.commons.compress.utils.IOUtils | org.apache.commons.compress.archivers.ar org.apache.commons.compress.archivers.cpio org.apache.commons.compress.archivers.tar org.apache.commons.compress.archivers.zip org.apache.commons.compress.changes | java.io java.lang java.nio.charset org.apache.commons.compress.archivers |
| Package | Package Dependencies |
|---|---|
| org.apache.commons.compress.archivers | org.apache.commons.compress.archivers.ar org.apache.commons.compress.archivers |
| org.apache.commons.compress.archivers.ar | org.apache.commons.compress.archivers org.apache.commons.compress.archivers.ar |
| org.apache.commons.compress.archivers.cpio | org.apache.commons.compress.archivers org.apache.commons.compress.archivers.ar org.apache.commons.compress.archivers |
| org.apache.commons.compress.archivers.dump | org.apache.commons.compress.archivers org.apache.commons.compress.archivers.ar org.apache.commons.compress.archivers |
| org.apache.commons.compress.archivers.jar | org.apache.commons.compress.archivers.zip org.apache.commons.compress.utils org.apache.commons.compress.archivers org.apache.commons.compress.archivers.ar org.apache.commons.compress.archivers |
| org.apache.commons.compress.archivers.tar | org.apache.commons.compress.archivers.zip org.apache.commons.compress.utils org.apache.commons.compress.archivers org.apache.commons.compress.archivers.ar org.apache.commons.compress.archivers |
| org.apache.commons.compress.archivers.zip | org.apache.commons.compress.utils org.apache.commons.compress.archivers org.apache.commons.compress.archivers.ar org.apache.commons.compress.archivers |
| org.apache.commons.compress.changes | org.apache.commons.compress.archivers org.apache.commons.compress.archivers.ar org.apache.commons.compress.archivers |
| org.apache.commons.compress.compressors | org.apache.commons.compress.compressors.pack200 org.apache.commons.compress.compressors |
| org.apache.commons.compress.compressors.bzip2 | org.apache.commons.compress.compressors org.apache.commons.compress.compressors.pack200 org.apache.commons.compress.compressors |
| org.apache.commons.compress.compressors.gzip | org.apache.commons.compress.compressors org.apache.commons.compress.compressors.pack200 org.apache.commons.compress.compressors |
| org.apache.commons.compress.compressors.pack200 | org.apache.commons.compress.compressors org.apache.commons.compress.compressors.pack200 |
| org.apache.commons.compress.compressors.xz | org.apache.commons.compress.compressors org.apache.commons.compress.compressors.pack200 org.apache.commons.compress.compressors |
| org.apache.commons.compress.utils | org.apache.commons.compress.archivers org.apache.commons.compress.archivers.ar org.apache.commons.compress.archivers |
| Term | Description |
|---|---|
| Number of Classes | The number of concrete and abstract classes (and interfaces) in the package is an indicator of the extensibility of the package. |
| Afferent Couplings | The number of other packages that depend upon classes within the package is an indicator of the package's responsibility. |
| Efferent Couplings | The number of other packages that the classes in the package depend upon is an indicator of the package's independence. |
| Abstractness | The ratio of the number of abstract classes (and interfaces) in the analyzed package to the total number of classes in the analyzed package. The range for this metric is 0 to 1, with A=0 indicating a completely concrete package and A=1 indicating a completely abstract package. |
| Instability | The ratio of efferent coupling (Ce) to total coupling (Ce / (Ce + Ca)). This metric is an indicator of the package's resilience to change. The range for this metric is 0 to 1, with I=0 indicating a completely stable package and I=1 indicating a completely instable package. |
| Distance | The perpendicular distance of a package from the idealized line A + I = 1. This metric is an indicator of the package's balance between abstractness and stability. A package squarely on the main sequence is optimally balanced with respect to its abstractness and stability. Ideal packages are either completely abstract and stable (x=0, y=1) or completely concrete and instable (x=1, y=0). The range for this metric is 0 to 1, with D=0 indicating a package that is coincident with the main sequence and D=1 indicating a package that is as far from the main sequence as possible. |
| Cycles | Packages participating in a package dependency cycle are in a deadly embrace with respect to reusability and their release cycle. Package dependency cycles can be easily identified by reviewing the textual reports of dependency cycles. Once these dependency cycles have been identified with JDepend, they can be broken by employing various object-oriented techniques. |