java编写的读取文本的题目

Question

import java.io.*;public class FirstInputStream {
    
    /** Creates a new instance of FirstInputStream */
    public FirstInputStream() {
    }
    
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        if (args.length != 1) {
            System.out.println("Syntax - FileInputStream file.");
            return;
        }
        
        try {
            InputStream fileInput = new FileInputStream(args[0]);
            int data = fileInput.read();
            while (data != -1) {
                System.out.write(data);
                data = fileInput.read();
            }
            
            fileInput.close();
        }
        catch (IOException e) {
            System.out.println("I/O error - " + e);
        }
    }
    
}

Answer 1

BufferedInputStream
用readLine()方法