java input.txt 읽기

코테 하다보면 input.txt로 쉽게 읽기

import java.util.Scanner;
import java.io.FileInputStream;

class Solution {
    public static void main(String args[]) throws Exception {
    	String inputTxt = Solution.class.getResource(".").getPath()+"input.txt";
        System.setIn(new FileInputStream(inputTxt));
        Scanner sc = new Scanner(System.in);

        int T = sc.nextInt();

        for (int test_case = 1; test_case <= T; test_case++) {
            System.out.println("test");
        }
    }
}