| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods |
| Total | 413 of 912 | 54% | 56 of 108 | 48% | 40 | 67 | 89 | 200 | 4 | 13 |
| write(char[], int, int) | | 0% | | 0% | 16 | 16 | 55 | 55 | 1 | 1 |
| write(int) | | 62% | | 61% | 5 | 10 | 11 | 28 | 0 | 1 |
| throwIllegal(int) | | 0% | | 0% | 4 | 4 | 7 | 7 | 1 | 1 |
| write(String, int, int) | | 90% | | 83% | 5 | 16 | 8 | 55 | 0 | 1 |
| close() | | 73% | | 50% | 5 | 6 | 3 | 17 | 0 | 1 |
| convertSurrogate(int) | | 72% | | 50% | 2 | 3 | 1 | 5 | 0 | 1 |
| write(char[]) | | 0% | n/a | 1 | 1 | 2 | 2 | 1 | 1 | |
| append(char) | | 0% | n/a | 1 | 1 | 2 | 2 | 1 | 1 | |
| UTF8Writer(OutputStream) | | 100% | | 100% | 0 | 2 | 0 | 12 | 0 | 1 |
| _findBufferHolder() | | 100% | | 100% | 0 | 3 | 0 | 8 | 0 | 1 |
| flush() | | 100% | | 75% | 1 | 3 | 0 | 6 | 0 | 1 |
| write(String) | | 100% | n/a | 0 | 1 | 0 | 2 | 0 | 1 | |
| static {...} | | 100% | n/a | 0 | 1 | 0 | 1 | 0 | 1 |