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( )
1分
A.read()
B.available()
C.close()
D.write()
正确答案是C