public static void main(String[] args) {
        File file1 = new File("input.txt");
        try {
            Scanner scan = new Scanner(file1);
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
}

java.io.FileNotFoundException: input.txt (The system cannot find the file specified)
    at java.io.FileInputStream.open(Native Method)
    at java.io.FileInputStream.<init>(Unknown Source)
    at java.util.Scanner.<init>(Unknown Source)
    at A.main(A.java:12)