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I have java desktop application where I have file upload and view feature. Here is my code for opening a file
public static boolean open(File file) {
OSDetector osdetector = new OSDetector();
try {
if (osdetector.isWindows()) {
Runtime.getRuntime().exec(new String[]{"rundll32", "url.dll,FileProtocolHandler",
file.getAbsolutePath()});
return true;
} else if (osdetector.isLinux() || osdetector.isMac()) {
Runtime.getRuntime().exec(new String[]{"/usr/bin/open",
file.getAbsolutePath()});
return true;
} else // Unknown OS, try with desktop
if (Desktop.isDesktopSupported()) {
Desktop.getDesktop().open(file);
return true;
} else {
return false;
}
} catch (Exception e) {
e.printStackTrace(System.err);
return false;
}
}
This is perfectly working in MAC OS but when I am running in windows 7 PC it won’t open files. Following are the error messages;
Adobe reader error: “There was an error opening this document. This file is already open or in use by another application”
Windows Photo viewer error message: “Windows photo viewer can’t open this picture because the picture is being edited in another program”
Paint error message: “A sharing violation occurred while accessing …..”
Please help
Thank You
Answer
Windows can’t cope with the idea of two programs using a file at once, presumably due to its DOS single-user origins. Make sure that when you save the file, you close it before you call your open() method.