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                ??碼云GVP開源項目 12k star Uniapp+ElementUI 功能強大 支持多語言、二開方便! 廣告
                ~~~ package io.a1; import java.io.*; public class Test { public static void main(String[] args) throws Exception { //read input是輸入流 write output是輸出流 //read write是字符流 input output是字節流 FileReader wj = new FileReader("C:/Users/Administrator/git/JavaStudy2/src/io/a1/Test.java"); //FileInputStream wj = new FileInputStream("E:/javadaima/java2-1/src/L7_1.java"); int aa; //這里必須定義成整形,java規定read()函數的返回值是整形的 aa = wj.read(); //讀取一個字符 System.out.println("文件內容為:"); while (aa!=(-1)) //ASCII碼是從0開始的數字,只有什么都沒有才會返回-1 { System.out.print((char)aa); //這里沒有ln ln的作用是換行 aa = wj.read(); } wj.close(); } } ~~~ ![](https://box.kancloud.cn/b869be8c0f273cae88c1669009600afe_1170x514.png)
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