Java FilterInputStream.mark(int readlimit)方法範例

Java FilterInputStream.mark(int readlimit)方法範例

FilterInputStream.FilterInputStream.mark(int readlimit)方法具有以下語法。

public void mark(int readlimit)

範例

在下面的程式碼中展示了如何使用FilterInputStream.mark(int readlimit)方法。

import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.io.FilterInputStream;
import java.io.IOException;
import java.io.InputStream;
// => w w w .Y I ib  AI .c  O   M
public class Main {
  public static void main(String[] args) throws Exception {

    // create input streams
    InputStream is = new FileInputStream("C://test.txt");
    FilterInputStream fis = new BufferedInputStream(is);

    // reads and prints BufferedReader
    System.out.println((char) fis.read());
    System.out.println((char) fis.read());

    // mark invoked at this position
    fis.mark(0);
    System.out.println("mark() invoked");
    System.out.println((char) fis.read());
    System.out.println((char) fis.read());

    // reset() repositioned the stream to the mark
    fis.reset();
    System.out.println("reset() invoked");
    System.out.println((char) fis.read());
    System.out.println((char) fis.read());

  }
}