java how to read file extension

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showing results for - "java how to read file extension"
Calvin
07 May 2017
1    private static String getFileExtension(File file) {
2        String extension = "";
3 
4        try {
5            if (file != null && file.exists()) {
6                String name = file.getName();
7                extension = name.substring(name.lastIndexOf("."));
8            }
9        } catch (Exception e) {
10            extension = "";
11        }
12 
13        return extension;
14 
15    }
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