Java基础之读文件——使用缓冲读取器读取文件（ReaderInputFromFile）

控制台程序，本例读取Java基础之写文件部分（WriterOutputToFile）写入的Saying.txt。

 import java.io.*;
 import java.nio.file.*;
 import java.nio.charset.Charset;

 public class ReaderInputFromFile {
   public static void main(String[] args) {
     Path file = Paths.get(System.getProperty("user.home")).resolve("Beginning Java Struff").resolve("Sayings.txt");
     if(!Files.exists(file)) {
       System.out.println(file + " does not exist. Terminating program.");
       System.exit(1);;
     }

     try(BufferedReader fileIn =
                   new BufferedReader(Files.newBufferedReader(file, Charset.forName("UTF-16")))){
       String saying = null;                                            // Stores a saying
       int totalRead = 0;                                               // Acumulates number of sayings
       // Read sayings until we reach reach EOF
       while((saying = fileIn.readLine()) != null) {
         System.out.println(saying);
         ++totalRead;                                                   // Increment count
       }
     System.out.format("%d  sayings read.%n", totalRead);
     } catch(IOException e) {
       System.err.println("Error writing file: " + file);
       e.printStackTrace();
     }
   }
 }