filedemo3.java

JAVA程序设计课程中各章节的程序实例。

/**
*pay more attention to this program!!!
*Byte stream classes through reading from and writing to a file
*2004.11.19. xhcprince
*/
import java.io.*;

class fileDemo3
{
	public static void main(String args[]) throws IOException
	{
		BufferedReader br1 = new BufferedReader(new InputStreamReader(System.in));

		System.out.print("Enter the file name:");
		String fname = br1.readLine();
		
		FileOutputStream fo = new FileOutputStream(fname);
		BufferedReader br2 = new BufferedReader(new InputStreamReader(System.in));
		String s;

		System.out.print("Enter the content of the text:");

		System.out.flush();//pay attention!To clear the buffer!It's better to write it!

		s = br2.readLine();
		for(int i=0; i<s.length(); ++i)
			fo.write(s.charAt(i));

		fo.close();

		FileInputStream fi = new FileInputStream(fname);
		int read;
		
		System.out.print("\nIn the " + fname + " file: ");
		while((read=fi.read()) != -1)
			System.out.print((char)read);

		fi.close();
	}
}