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The Java SE 7 Documentation [J2SE 2011] defines Files.delete() to throw the following exceptions:
Exception | Reason |
|---|---|
| File does not exist |
| File is a directory and could not otherwise be deleted because the directory is not empty |
| An I/O error occurs |
| In the case of the default provider and a security manager is installed, the |
Because SecurityException is a runtime exception, it need not be declared. Because NoSuchFileException and DirectoryNotExmptyException both inherit from IOException, they will be caught by the compliant solution's catch clause.
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Failure to check the return values of methods that perform file I/O can result in unexpected behavior.
Rule | Severity | Likelihood | Remediation Cost | Priority | Level |
|---|---|---|---|---|---|
FIO02-J | Medium | Probable | Medium | P8 | L2 |
Automated Detection
| Tool | Version | Checker | Description | ||||||
|---|---|---|---|---|---|---|---|---|---|
| CodeSonar |
| JAVA.FUNCS.IRV | Ignored Return Value (Java) | ||||||
| SonarQube |
| S899 |
Related Guidelines
Bibliography
[API 2014] |
|
| |
Chapter 8, "File I/O" |
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