• 2022-05-26
    阅读下段代码import java.io.*;public class Example{public static void main(String[] args) throws Exception {FileInputStream fis = new FileInputStream("file.txt");FileOutputStream fos = new FileOutputStream("copy_file.txt");int ch = 0;while((ch =fis.read())!=-1){fos.write(ch);}fos._______;fis.close();}}请说出下划线上,填写的方法名称( )
    A: write()
    B: close()
    C: available()
    D: read()