进阶day10-字符缓冲流中特有的功能

javaSE-day10/src/com/inmind/buffered_stream01/Demo05.java

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+package com.inmind.buffered_stream01;
+
+import java.io.*;
+
+/*
+字符缓冲流中特有的功能
+    BufferedWriter: newLine 它能够进行多个系统之间的换行的兼容
+
+    BufferedReader: readLine 它能够将文件中的内容按一行文本来读取
+ */
+public class Demo05 {
+    //BufferedReader，一次读取一行内容
+    public static void main(String[] args) throws IOException {
+        BufferedReader br = new BufferedReader(new FileReader("a.txt"));
+        /*String line = br.readLine();
+        System.out.println(line);
+
+        line = br.readLine();
+        System.out.println(line);
+
+        line = br.readLine();
+        System.out.println(line);
+
+        line = br.readLine();
+        System.out.println(line);*/
+        String line = null;//接收字符缓冲输入流读取的一行内容
+        /*
+        循环条件：(line = br.readLine()) != null
+        1.br.readLine() 读取文件的一行内容
+        2.line = br.readLine() 将读取到的一行内容保存到line中
+        3.(line = br.readLine()) != null 判断是否读取到了文件的末尾
+         */
+        while ((line = br.readLine()) != null) {
+            System.out.println(line);
+        }
+
+        br.close();
+
+    }
+
+    //BufferedWriter，换行输出内容
+    public static void method(String[] args) throws IOException {
+        BufferedWriter bw = new BufferedWriter(new FileWriter("a.txt"));
+        bw.write("我是谁");
+        bw.newLine();
+        bw.write("我在哪");
+        bw.newLine();
+        bw.write("我在干嘛");
+        bw.close();
+    }
+
+}