public static void main(String[] args) throws IOException {
Closer closer = Closer.create();
// copy a file
File origin = new File("join_temp");
File copy = new File("target_temp");
try {
BufferedReader reader = new BufferedReader(new FileReader("join_temp"));
BufferedWriter writer = new BufferedWriter(new FileWriter("target_temp"));
closer.register(reader);
closer.register(writer);
String line;
while ((line = reader.readLine()) != null) {
writer.write(line);
}
} catch (IOException e) {
throw closer.rethrow(e);
} finally {
closer.close();
}
Files.copy(origin, copy);
File moved = new File("moved");
// moving renaming
Files.move(copy, moved);
// working files as string
List<String> lines = Files.readLines(origin, Charsets.UTF_8);
HashCode hashCode = Files.hash(origin, Hashing.md5());
System.out.println(hashCode);
// file write and append
String hamlet = "To be, or not to be it is a question\n";
File write_and_append = new File("write_and_append");
Files.write(hamlet, write_and_append, Charsets.UTF_8);
Files.append(hamlet, write_and_append, Charsets.UTF_8);
// write_and_append.deleteOnExit();
Files.write("OverWrite the file", write_and_append, Charsets.UTF_8);
// ByteSource ByteSink
ByteSource fileBytes = Files.asByteSource(write_and_append);
byte[] readBytes = fileBytes.read();
// equals to pre line -> Files.toByteArray(write_and_append) == readBytes
ByteSink fileByteSink = Files.asByteSink(write_and_append);
fileByteSink.write(Files.toByteArray(write_and_append));
BaseEncoding base64 = BaseEncoding.base64();
System.out.println(base64.encode("123456".getBytes()));
}
@Override
public String toString() {
return "ByteSource.wrap("
+ Ascii.truncate(BaseEncoding.base16().encode(bytes, offset, length), 30, "...")
+ ")";
}
