File imprt 어떤거 해야하죠?

  File file = new File("not existing file.txt"); FileInputStream = new FileInputStream(file);
이 코드를 복붙을 했는데

FileInputStream = new FileInputStream(file);
이부분에서 FileInputStream 부분이 빨간줄이 뜹니다

import java.io.File;
import java.io.FileInputStream;

임포트는 이걸 했구요
Creates a FileInputStream by opening a connection to an actual file, the file named by the File object file in the file system. A new FileDescriptor object is created to represent this file connection.

First, if there is a security manager, its checkRead method is called with the path represented by the file argument as its argument.

If the named file does not exist, is a directory rather than a regular file, or for some other reason cannot be opened for reading then a FileNotFoundException is thrown.
이런 오류가 있는데 어떻게 해결해요?