Thread: Program to read .TXT file one line at a time

Hi! I'm fairly new to Java, or even programming in general. I'm using Netbeans to help me find errors and everything, but when I try to run/debug my program, It says there is something wrong with my 'while' loop. Can I have some pointers?

Main.java

class Main{
 
    public static void main(String[] args){
 
        filereader fr = new filereader();
        fr.openFile();
        fr.readFile();
        fr.closeFile();
 
    }
 
}

filereader.java

import java.io.*;
import java.util.*;
 
public class filereader{
 
private Scanner scan;
 
public void openFile(){
 
    File codes = new File("codes.txt");
 
    try{
        scan = new Scanner(codes);
    }
    catch(Exception e){
        System.out.println("Couldn't find file.");
    }
}
 
public void readFile(){
    while(scan.hasNext()){
        String num = scan.next();
        String code = scan.next();
 
        System.out.println(num + code);
        System.out.println();
        System.out.println("Press Enter to continue...");
 
        Scanner input = new Scanner(System.in);
        input.nextLine();
    }
}
 
public void closeFile(){
 
    scan.close();
 
}
 
}

codes.txt

1.		3RXPM3
2.		26MYKD
3.		5GATBA
4.		PMF5R3
5.		3SJUPQ
6.		NBR5JT
7.		PUR3VR
8.		AJJCF2
9.		NCM26A
10.		MT2Y5G
11.		FG43PK
12.		GMBH87
13.		T9HMHN
14.		RCYMKW
15.		36E9FU
16.		FBRKJ2
17.		YAPG32
18.		MMR2X4
19.		A7NAR9
20.		N62VRX
21.		NV4A65
22.		KGFDT2
23.		RFWMVE
24.		F465F9
25.		7KPU67
26.		2E8V7U
27.		CJWBD7
28.		49E5P8
29.		WUEUAU
30.		TN45G2
31.		5D7FY8
32.		T9JT8V
33.		Y4JEPT
34.		84GYTY
35.		265B3X
36.		JA6G58
37.		4YWTBU
38.		Y8US2D
39.		7794YU
40.		TWDP3R
41.		H7VDPY
42.		KBJN38
43.		QPT4Q
44.		EKT6JJ
45.		YWTBUC
46.		TERKP9
47.		HUDG6T
48.		4CCS9S
49.		UN4SRA
50.		UQXSST
51.		BPUK82
52.		88D544
53.		6C2T7S
54.		T4GTGJ
55.		HJ7PR5
56.		7BCDV9
57.		XRSVRA
58.		P973MD
59.		S5AYPJ
60.		JC4STS
61.		44MA2X
62.		UY4QDJ
63.		44DMRR
64.		Q6AD5N
65.		H3UGEG
66.		F4VHWU
67.		4689TU
68.		JR8EHW
69.		FVGAJP
70.		86KF9N
71.		5KA8FM
72.		U6B37E
73.		9W8PEQ
74.		CV949U
75.		BX7AXS
76.		8JVG2F
77.		2HAJ9X
78.		3AS3RP
79.		XWEQ4Q
80.		GPN77T
81.		RD36SS
82.		U2FE5W
83.		QT5SQJ
84.		VUDJT7
85.		28KKJN
86.		72H3MB
87.		9JY5CX
88.		KM6QFC
89.		PTVSYU
90.		9VGC9W
91.		MRR7PM
92.		VVH88A
93.		YNQW5R
94.		PMGCN8
95.		X3YTDW
96.		S22N2J
97.		A37W4N
98.		TDJQFH
99.		VA7TAS
100.		7TE866