Java FileInputStream.getChannel()方法範例

2019-10-16 22:14:49

Java FileInputStream.getChannel()方法範例

FileInputStreamFileInputStream.getChannel()方法具有以下語法。

public FileChannel getChannel()

範例

在下面的程式碼顯示如何使用FileInputStream.getChannel()方法。


import java.io.FileInputStream;
import java.io.IOException;
import java.nio.channels.FileChannel;

public class Main {
  public static void main(String[] args) throws IOException {

    int i = 0;

    FileInputStream fis = new FileInputStream("C://test.txt");

    // read till the end of the file
    while ((i = fis.read()) != -1) {
      // get file channel // By: W  w W.Y I iba I.c  o  M
      FileChannel fc = fis.getChannel();

      // get channel position
      long pos = fc.position();

      char c = (char) i;

      System.out.println("No of bytes read: " + pos);
      System.out.println("Char read: " + c);
    }
  }
}