Put the input in a text file. Then in the variable path (in main method), add the path to the text file.

Robot.java

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.stream.Stream;

public class Robot {
    private static int gridX;
    private static int gridY;
    private static HashMap<String, Integer> scents = new HashMap<>();

    /*
    the directions currently correspond to [N, E, S, W]
    they are in clockwise direction
    if NE has to be added then {1,1} can be added as second element
    to give corresponding directions as [N, NE, E, S, W]
    {1, 1} because if the robot moves NE then it will increase both its x and y coordinate
     */
    private static int[][] directions = {{0, 1}, {1, 0}, {0, -1}, {-1, 0}};

    private int x;
    private int y;
    private boolean isFallen = false;
    private int directionIndex = 0;

    public Robot(int x, int y, char orient){
        this.x = x;
        this.y = y;

        switch(orient){
            case 'N': this.directionIndex = 0;
                break;
            case 'E': this.directionIndex = 1;
                break;
            case 'S': this.directionIndex = 2;
                break;
            case 'W': this.directionIndex = 3;
                break;
        }
    }

    public static void setGridSize(int gx, int gy){
        gridX = gx;
        gridY = gy;
    }

    private char currentOrientation(){
        switch (this.directionIndex){
            case 0: return 'N';
            case 1: return 'E';
            case 2: return 'S';
            default: return 'W';
        }
    }

    public void changeOrientation(char a) {
        switch (a) {

            case 'R':
                directionIndex++;
                directionIndex %= directions.length;
                break;

            case 'L':
                if (directionIndex == 0)
                    directionIndex = directions.length - 1;
                else
                    directionIndex--;
                break;
        }
    }

    public boolean forward() {
        String add = "" + this.x + this.y + directions[directionIndex][0] + directions[directionIndex][1];

        if (scents.containsKey(add)) {
            return true;
        }

        int newX = this.x + directions[directionIndex][0];
        int newY = this.y + directions[directionIndex][1];

        if (newX > gridX || newY > gridY) {
            scents.put(add, 1);
            this.isFallen = true;
            return false;
        }

        this.x = newX;
        this.y = newY;

        return true;
    }

    public boolean move(char a) {
        switch (a) {
            case 'F':
                return this.forward();
            case 'R':
                this.changeOrientation(a);
                return true;
            case 'L':
                this.changeOrientation(a);
                return true;
        }
        return false;
    }

    public String toString(){
        return this.x + " " + this.y + " " + this.currentOrientation() + " " + (this.isFallen ? "LOST" : "");
    }

    public static String launch(Robot rob, String input){
        for(int i = 0; i<input.length(); i++){
            if(!rob.move(input.charAt(i))){
                return rob.toString();
            }
        }
        return rob.toString();
    }

    public static void main (String args[]){

        String path = "";
        ArrayList<String> input = new ArrayList<>();

        try (Stream<String> stream = Files.lines(Paths.get(path))){
            stream.filter(p -> !p.equals("")).forEach(input::add);
        } catch (IOException e){
            e.printStackTrace();
        }

        ArrayList<String> temp = answer(input);
        for(String i: temp){
            System.out.println(i);
        }

    }

    public static ArrayList<String> answer(ArrayList<String> input){
        String[] one = input.get(0).split(" ");
        Robot.setGridSize(Integer.parseInt(one[0]), Integer.parseInt(one[1]));
        ArrayList<String> ans = new ArrayList<>();

        for(int i = 1; i<input.size()-1; i+=2){
            String[] init = input.get(i).split(" ");
            Robot rob = new Robot(Integer.parseInt(init[0]), Integer.parseInt(init[1]), init[2].charAt(0));
            String a = Robot.launch(rob, input.get(i+1));
            ans.add(a);
        }

        return ans;
    }
}