| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods | Missed | Classes |
| Total | 1,215 of 2,145 | 43% | 151 of 210 | 28% | 150 | 230 | 224 | 402 | 63 | 125 | 3 | 24 |
| JavaFileSystem.java | | 39% | | 18% | 57 | 87 | 108 | 159 | 30 | 56 | 0 | 9 |
| ClassLoaderFileSystem.java | | 49% | | 4% | 23 | 39 | 24 | 49 | 9 | 25 | 0 | 7 |
| StreamPump.java | | 23% | | 11% | 11 | 15 | 30 | 43 | 3 | 6 | 0 | 1 |
| ReaderPump.java | | 23% | | 10% | 12 | 16 | 32 | 45 | 3 | 6 | 0 | 1 |
| MIMEUtil.java | | 51% | | 36% | 17 | 24 | 13 | 35 | 4 | 10 | 0 | 1 |
| Serializer.java | | 63% | | 60% | 9 | 17 | 1 | 25 | 1 | 2 | 0 | 1 |
| FileSystemUtils.java | | 82% | | 62% | 9 | 20 | 4 | 34 | 1 | 8 | 0 | 1 |
| BadFileException.java | | 0% | n/a | 4 | 4 | 4 | 4 | 4 | 4 | 1 | 1 | |
| EOFException.java | | 0% | n/a | 4 | 4 | 4 | 4 | 4 | 4 | 1 | 1 | |
| FileNotFoundException.java | | 0% | n/a | 4 | 4 | 4 | 4 | 4 | 4 | 1 | 1 |