视频链接：16.24 转换流的使用_哔哩哔哩_bilibilihttps://www.bilibili.com/video/BV1Tz4y1X7H7?spm_id_from=333.788.videopod.episodes&vd_source=b5775c3a4ea16a5306db9c7c1c1486b5&p=24

1.InputStreamReader使用

package com.yundait.Demo05;import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStreamReader;
import java.nio.charset.StandardCharsets;public class InputStreamReaderDemo01 {public static void main(String[] args) throws Exception {//1创建InputStreamReaderFileInputStream fis = new FileInputStream("C:\\Users\\Public\\Documents\\ggg1.txt");InputStreamReader isr = new InputStreamReader(fis, "gbk");//可以选择读取文件时使用的字符编码标准//2读取文件int data;while ((data = isr.read())!=-1){System.out.print((char) data);}//3关闭isr.close();}
}

2.OutputStreamWriter使用

package com.yundait.Demo05;import java.io.FileOutputStream;
import java.io.OutputStreamWriter;
import java.nio.charset.StandardCharsets;public class OutputStreamWriterDemo01 {public static void main(String[] args) throws Exception {//创建转换流FileOutputStream fos = new FileOutputStream("C:\\Users\\Public\\Documents\\ggg1.txt");OutputStreamWriter osw = new OutputStreamWriter(fos, "gbk");//写入文件for(int i=0; i<10; i++){osw.write("好好学习，天天向上\r\n");osw.flush();}//3关闭osw.close();System.out.println("执行完毕");}
}