Bulk 'Files.readAttributes()' call can be used
Reports multiple sequential java.io.File
attribute checks, such as:
isDirectory()
isFile()
lastModified()
length()
Such calls can be replaced with a bulk Files.readAttributes()
call. This is usually more performant than multiple separate attribute checks.
Example:
boolean isNewFile(File file, long lastModified) throws IOException {
return file.isFile() && file.lastModified() > lastModified;
}
After the quick-fix is applied:
boolean isNewFile(File file, long lastModified) throws IOException {
var fileAttributes = Files.readAttributes(file.toPath(), BasicFileAttributes.class);
return fileAttributes.isRegularFile() && fileAttributes.lastModifiedTime().toMillis() > lastModified;
}
- By ID
Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.
BulkFileAttributesRead
This inspection does not show a warning if IOException
is not handled in the current context, but the quick-fix is still available.
Note that the replacements are usually not completely equivalent and should be applied with care. In particular, the behavior could differ if the file does not exist at all.
This inspection only reports if the language level of the project or module is 7 or higher.
New in 2022.1
Inspection Details | |
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By default bundled with: | |
Can be installed with plugin: | Java, 243.23126 |
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