fileinputstreamdemo.java

来自「Java网络编程与分布式计算, 主要分析java网络各方面的编程, 提供许多实用」· Java 代码 · 共 43 行

import java.io.*;

// Chapter 4, Listing 1
public class FileInputStreamDemo 
{
	public static void main(String args[])
	{
		if (args.length != 1)
		{
			System.err.println ("Syntax - FileInputStreamDemo file");
			return;
		}

		try
		{
			// Create an input stream, reading from the specified file
			InputStream fileInput = new FileInputStream ( args[0] );

			// Read the first byte of data
			int data = fileInput.read();

			// Repeat : until end of file (EOF) reached
			while (data != -1)
			{			
				// Send byte to standard output
				System.out.write ( data );
	
				// Read next byte
				data = fileInput.read();
			}

			// Close the file
			fileInput.close();
		}
		catch (IOException ioe)
		{
			System.err.println ("I/O error - " + ioe);
		}
	}

}