io

whatsmars-javase/src/main/java/org/hongxi/whatsmars/javase/io/FileTest.java

+package org.hongxi.whatsmars.javase.io;
+
+import java.io.BufferedReader;
+import java.io.FileReader;
+import java.io.PrintWriter;
+
+/**
+ * Created by shenhongxi on 2018/10/25.
+ */
+public class FileTest {
+
+    public static void main(String[] args) throws Exception {
+        BufferedReader br = new BufferedReader(new FileReader("/Users/javahongxi/Documents/white_list.txt"));
+        PrintWriter pw = new PrintWriter("/Users/javahongxi/Documents/white_list02.txt");
+        String line = null;
+        while ((line = br.readLine()) != null) {
+            pw.println(line);
+        }
+        pw.flush();
+        pw.close();
+        br.close();
+    }
+}