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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6. import java.io.File;
  7. import java.io.FileInputStream;
  8. import java.io.FileOutputStream;
  9. import java.io.IOException;
  10. import java.io.InputStream;
  11. import java.io.OutputStream;
  12. import java.nio.channels.FileChannel;
  13. import java.nio.file.Files;
  14. import java.nio.file.StandardCopyOption;
  15. import java.text.SimpleDateFormat;
  16. import java.util.Date;
  17. import java.util.concurrent.TimeUnit;
  18.  
  19. /* Name of the class has to be "Main" only if the class is public. */
  20. class Ideone
  21. {
  22. 	public static void main (String[] args) throws java.lang.Exception
  23. 	{
  24. 		// your code goes here
  25. 	}
  26.  
  27. 		private static void copyWithChannel(File source, File target) throws IOException {
  28.  
  29. 		FileInputStream in = new FileInputStream(source);
  30. 		FileOutputStream out = new FileOutputStream(target);
  31.  
  32. 		FileChannel inChannel = in.getChannel();
  33. 		FileChannel outChannel = out.getChannel();
  34.  
  35. 		inChannel.transferTo(0, source.length(), outChannel);
  36.  
  37. 		in.close();
  38. 		out.close();
  39.  
  40. 	}
  41.  
  42. 	private static void copyWithFiles(File source, File target) throws IOException {
  43.  
  44. 		Files.copy(source.toPath(), target.toPath(), StandardCopyOption.REPLACE_EXISTING);
  45. 	}
  46.  
  47. 	private static void copyWithStream(File source, File target) throws IOException {
  48.  
  49. 		InputStream in = new FileInputStream(source);
  50. 		OutputStream out = new FileOutputStream(target);
  51. 		byte[] buf = new byte[8192];
  52. 		int len;
  53. 		while ((len = in.read(buf)) > 0) {
  54. 			out.write(buf, 0, len);
  55. 		}
  56. 		in.close();
  57. 		out.close();
  58. 	}
  59. }
Success #stdin #stdout 0.04s 711168KB
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https://ideone.com/D7iLZQ
language:
Java (HotSpot 12)
created:
8 years ago
visibility:
public

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