AP® Computer Science A glossary
File (class)
Also called: File
Course: AP® Computer Science A Shows up in: Unit 4: Data Collections
The java.io class whose constructor File(String str) connects a program to the file with that pathname so a Scanner can read it.
Appears in the course and exam description (CED): 4.6.A.24.6.A.34.6.A.44.6.A.5
A File object does not read anything by itself; pass it to new Scanner(f). The method that uses it must say what happens if the file cannot be opened, for example with throws IOException.
import java.io.File;
import java.io.IOException;
import java.util.Scanner;
public class Open
{
public static void main(String[] args) throws IOException
{
File f = new File("scores.txt");
Scanner input = new Scanner(f);
System.out.println(input.nextInt());
input.close();
}
}