FileUtils: add method to obtain last modified time

Author: ctrueden

src/main/java/org/scijava/util/FileUtils.java

@@ -44,7 +44,9 @@
 import java.net.URISyntaxException;
 import java.net.URL;
 import java.util.ArrayList;
+import java.util.Calendar;
 import java.util.Collection;
+import java.util.Date;
 import java.util.jar.JarEntry;
 import java.util.jar.JarFile;
 import java.util.regex.Matcher;
@@ -122,6 +124,14 @@ public static String getExtension(final String path) {
 		return getExtension(new File(path));
 	}
 
+	/** Gets the {@link Date} of the file's last modification. */
+	public static Date getModifiedTime(final File file) {
+		final long modifiedTime = file.lastModified();
+		final Calendar c = Calendar.getInstance();
+		c.setTimeInMillis(modifiedTime);
+		return c.getTime();
+	}
+
 	/**
 	 * A regular expression to match filenames containing version information.
 	 * <p>