试题详情
- 单项选择题 1. interface DoStuff2 { 2. float getRange(int low, int high); } 3. 4. interface DoMore { 5. float getAvg(int a, int b, int c); } 6. 7. abstract class DoAbstract implements DoStuff2, DoMore { } 8. 9. class DoStuff implements DoStuff2 { 10. public float getRange(int x, int y) { return 3.14f; } } 11. 12. interface DoAll extends DoMore { 13. float getAvg(int a, int b, int c, int d); } What is the result?()
A、 The file will compile without error.
B、 Compilation fails. Only line 7 contains an error.
C、 Compilation fails. Only line 12 contains an error.
D、 Compilation fails. Only line 13 contains an error.
E、 Compilation fails. Only lines 7 and 12 contain errors.
F、 Compilation fails. Only lines 7 and 13 contain errors.
G、 Compilation fails. Lines 7, 12, and 13 contain errors.
- A
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