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bbb_bbb
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How to use java.nio in MATLAB?

Asked by bbb_bbb
on 26 Dec 2018
Latest activity Commented on by bbb_bbb
on 30 Dec 2018
How to delete a file using this method in MATLAB?
like this, but using NIO instead of IO:
java.io.File(filename).delete()

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1 Answer

Answer by Kojiro Saito on 27 Dec 2018
 Accepted Answer

Here is two example of deleting a file using java.nio.file.
%% Method1
str = fullfile(pwd, 'test1.txt' );
%jpath1 = java.nio.file.Paths.get(str) % not works
jpath1 = java.nio.file.Paths.get(str, javaArray('java.lang.String', 0)); % works
java.nio.file.Files.delete(jpath1)
%% Method2
jpath2 = java.nio.file.Paths.get(pwd, 'test2.txt');
java.nio.file.Files.delete(jpath2)
I've tested in MATLAB R2018b on Windows 10.
As you may know, from R2017b, MATLAB's JVM was changed to Java 8. So, java.nio.file.Files.delete used in MATLAB R2017b ~ R2018b is that of Java 8.

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Btw, how to determine the success of the operation:
java.nio.file.Files.delete(jpath2)
>> Btw, how to determine the success of the operation:
I would simply use "try catch".
try
java.nio.file.Files.delete(jpath2)
catch ME
% When delete was failed, do some error handle
error(ME.message)
end
% When delete was successful
msgbox('Successfully deleted')
ME.message - gives error...

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