Java：将文本文件的内容打印到屏幕 [英] Java: print contents of text file to screen

问题描述

我有一个名为 foo.txt 的文本文件，其内容如下：

I have a text file named foo.txt, and its contents are as below:

这个

this

是

text

如何在Java 7中将这个确切的文件打印到屏幕上？

How would I print this exact file to the screen in Java 7?

推荐答案

在Java 7之前：

 BufferedReader br = new BufferedReader(new FileReader("foo.txt"));
 String line = null;
 while ((line = br.readLine()) != null) {
   System.out.println(line);
 }

• 添加异常处理


• 添加关闭流



从Java 7开始，不需要关闭流，因为它实现了 autocloseable

Since Java 7, there is no need to close the stream, because it implements autocloseable

try (BufferedReader br = new BufferedReader(new FileReader("foo.txt"))) {
   String line = null;
   while ((line = br.readLine()) != null) {
       System.out.println(line);
   }
}

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