...
| Code Block | ||
|---|---|---|
| ||
class TempFile {
public static void main(String[] args) throws IOException{
File f = File.createTempFile("tempnam",".tmp");
FileOutputStream fop = null;
try {
fop = new FileOutputStream(f);
String str = "Data";
fop.write(str.getBytes());
fop.flush();
} finally {
// Stream/file still open; file will
// not be deleted on Windows systems
f.deleteOnExit(); // Delete the file when the JVM terminates
if (fop != null) {
try {
fop.close();
} catch (IOException x) {
// handle error
}
}
}
}
}
|
Compliant Solution (Java 1.7
...
, DELETE_ON_CLOSE)
This compliant solution creates a temporary file using several methods of Java 1.7's NIO package. It uses the createTempFile() method, which creates an unpredictable name. (The actual method by which the name is created is implementation-defined and undocumented.) Additionally, the createTempFile() will throw an exception if the file already exists. The file is opened using the try-with-resources construct, which automatically closes the file whether or not an exception occurs. Finally, the file is opened with the Java 1.7 DELETE_ON_CLOSE option, which serves to remove the file automatically when it is closed.
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<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="3864d9b054aeee21-930858cd-457d47b4-8239bf6f-6343082d9eba32bff676d17c"><ac:plain-text-body><![CDATA[ | [[API 2006 | AA. Bibliography#API 06]] | Class File, methods | ]]></ac:plain-text-body></ac:structured-macro> | |
<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="b23d9673404fcf88-cfe1540b-4a7b4607-b84e905f-f2e4109c239bb4a7628e5b93"><ac:plain-text-body><![CDATA[ | [[Darwin 2004 | AA. Bibliography#Darwin 04]] | 11.5 Creating a Transient File | ]]></ac:plain-text-body></ac:structured-macro> | |
<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="be3c23592e668976-b4a5f1bf-4f424b4a-ade79a9b-f0bd9386a0dc837cc94923ae"><ac:plain-text-body><![CDATA[ | [[J2SE 2011 | AA. Bibliography#J2SE 11]] |
| ]]></ac:plain-text-body></ac:structured-macro> | |
<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="7862d43d39923846-c3887fd4-41cb4642-9140a0ec-c400e2f1119c0543259d696d"><ac:plain-text-body><![CDATA[ | [[SDN 2008 | AA. Bibliography#SDN 08]] | Bug IDs: 4171239, 4405521, 4635827, 4631820 | ]]></ac:plain-text-body></ac:structured-macro> | |
<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="d46c0ce130a17320-dd2d203f-4ee541ff-8721bb95-0d2ccb8737c8ba80912b40fc"><ac:plain-text-body><![CDATA[ | [[Secunia 2008 | AA. Bibliography#Secunia 08]] | [Secunia Advisory 20132 | http://secunia.com/advisories/20132/] | ]]></ac:plain-text-body></ac:structured-macro> |
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