Java Three Commonly Used Methods of Copying Files
- 2021-07-03 00:02:46
- OfStack
Three Ways to Copy Files:
1. Files. copy (path, new FileOutputStream (dest)); .
2. Use byte streams.
3. Use character stream.
The code is implemented as follows:
package com.tiger.io;
import java.io.*;
import java.nio.file.*;
/**
* Of the copy file 3 A kind of way
* @author tiger
* @Date
*/
public class CopyFile {
public static void main(String[] args) throws IOException, IOException {
Path path = Paths.get("E:","17-06-15-am1.avi");
String dest = "E:\\Copy Movie .avi";
copy01(path, dest);
String src = "E:\\[Java Thorough investigation of typical applications 1000 Example: Java Getting started ].pdf";
String dest1 = "E:\\CopyFile.pdf";
copy02(src, dest1);
//copy03(src, dest1);
}
/**
* Utilization Files Tools copy
* @param path
* @param dest
* @throws IOException
* @throws IOException
*/
public static void copy01(Path path,String dest) throws IOException, IOException{
// Utilization Files The tool class copies the file , Simplify programming, just write 1 Sentence.
Files.copy(path, new FileOutputStream(dest));
}
/**
* Copy with byte stream
* @param src
* @param dest
* @throws IOException
*/
public static void copy02(String src,String dest) throws IOException{
InputStream is = new BufferedInputStream(new FileInputStream(src));
OutputStream os = new BufferedOutputStream(new FileOutputStream(dest));
// File copy u , -- Cycle + Read + Write out
byte[] b = new byte[10];// Buffer size
int len = 0;// Receiving length
// Read a file
while (-1!=(len = is.read(b))) {
// Read in and write out as much as you can until you finish reading.
os.write(b,0,len);
}
// Forcibly brush out data
os.flush();
// Close the flow, open first and then close
os.close();
is.close();
}
/**
* Character stream copy
* @param src
* @param dest
* @throws IOException
*/
public static void copy03(String src,String dest) throws IOException{
// Character input stream
BufferedReader reader = new BufferedReader(new FileReader(src));
// Character output stream
BufferedWriter writer = new BufferedWriter(new FileWriter(dest));
char[] cbuf = new char[24];
int len = 0;
// Write out while reading in
while ((len = reader.read(cbuf)) != -1) {
writer.write(cbuf, 0, len);
}
// Close flow
writer.close();
reader.close();
}
}
Summarize