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Java File Copy - Guava, Java7, Java Legacy, FileChannel, CommonsIO

There are a lot of way to copy file in Java. I have wrote sample codes for them. I think Java 7 way will be the normal & standard way soon!! import static com.dukesoftware.utils.common.ExceptionUtils.throwNotImplementedException; import static java.nio.file.StandardCopyOption.REPLACE_EXISTING; import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.io.Reader; import java.io.Writer; import java.net.URI; import java.nio.channels.FileChannel; import java.nio.file.Paths; import org.apache.commons.io.FileUtils; import com.google.common.io.Closeables; import com.google.common.io.Files; public enum Copier { GUAVA{ @Override public void copy(File src, File dest) throws IOException { Files.copy(src, dest); } }, JAVA7{ @