Answer Happy

I need help with the modification of this code since the
instructor gave these extra instructions:
- Each list must be stored in a text file and use the
following filenames:
a. strings.txt – contains the inputted
strings
b. word3.txt – contains all 3-letter words
found in the list of strings
c. word4.txt – contains all 4-letter words
found in the list of strings
d. word5.txt – contains all words with more
than 4 characters found in the list of strings.
Sample format of file path: ??? = new
FileReader("word3.txt");
- This program will be executed in the command
prompt.
1 import java.util.*; 2 JAWN H 3 4 5 6 7 00 8 9 10 12 13 14 15 16 17 18 19 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 D import java.util.stream.Collectors; public class MP { //userdefined function for string length public static int strlen(String s) { int 1 = 0; //finding length of string for (char : s.toCharArray()) { 1++; } return 1; } public static void main(String[] args) { Scanner sc = new Scanner (System.in); List<String> list = new ArrayList<String> (); String s; //loop will execute until not quit while (true) { //display menu System.out.println("\n- System.out.println("1. Add a String\n" + "2. Display List of Strings\n" + "3. Display List of 3-letter Words\n" + "4. Display List of 4-letter Words\n" + "5. Display List of Words With More Than 4 Characters\n" + "6. Delete a 3-letter Word\n" + "7. Delete a 4-letter Word\n" + "8. Quit\nEnter Your Choice\t:\t"); //exception handling for wrong type of data try { int choice = sc.nextInt (); //checking for values between 1-8 while (choice <= 0 || choice > 8) { System.out.print("\n You Entered Wrong Choice\t:\t"); choice = sc.nextInt (); } sc.nextLine(); --\n");
43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 switch (choice) { case 1: //Add a String System.out.print("Enter String to Add\t:\t"); s = sc.nextLine(); //Adding elements in the List list.add(s); break; case 2://Display List of Strings if (!list.isEmpty()) { List<String> listl = list.stream().distinct ().collect (Collectors.toList());//unique word storing Collections.sort (listl); System.out.println("\n--- for (String ls : listl) { -\n"); System.out.println(1s); } } else { System.out.println("Empty List"); } break; case 3://Display List of 3-letter Words if (!list.isEmpty())//checking for not empty list { List<String> list1 = list.stream().distinct ().collect (Collectors.toList()); Collections.sort (listl); System.out.println("\n--- -\n"); for (String 1s : listl) { int 1 = strlen (1s);//calling user defined string length function if (1 == 3) // length of 3 letters { System.out.println (1s); } System.out.println("Empty List"); } } else { } break;
84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 case 4://Display List of 4-letter Words if (!list.isEmpty()) { List<String> list1 = list.stream().distinct().collect (Collectors.toList ()); Collections.sort (listl); System.out.println("\n--- for (String ls : listl) { int 1 = strlen(1s);//calling user defined string length function if (1 == 4) { System.out.println(ls); } } } else { System.out.println("Empty List"); } break; if (!list.isEmpty()) { List<String> list1 = list.stream().distinct ().collect (Collectors.toList()); Collections.sort (listl); System.out.println("\n--- for (String ls : listl) { int 1 = strlen(1s);//calling user defined string length function if (1 > 4) // lengthof 5 or more letters { System.out.println (1s); } } else { System.out.println("Empty List"); } break; if (!list.isEmpty()) { List<String> list1 = list.stream ().distinct ().collect (Collectors.toList()); Collections.sort (listl); System.out.println("\n--- case 5: case 6: } ·\n"); --\n"); -\n");
125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 for (String 1s : listl) { int 1 = strlen(1s);//calling user defined string length function if (1 == 3) { System.out.println (1s); } } System.out.print("Enter String to Delete\t:\t"); s = sc.nextLine(); list.remove(s); } else { System.out.println("Empty List"); } break; if (!list.isEmpty()) { List<String> list1 = list.stream ().distinct().collect (Collectors.toList()); Collections.sort (list1); System.out.println("\n--- for (String ls : listl) { int 1 = strlen (1s);//calling user defined string length function if (1 == 4) { System.out.println (1s); } } System.out.print("Enter String to Delete\t:\t"); s = sc.nextLine(); list.remove(s); System.out.println("Empty List"); case 7: } else { } break; System.exit(0); case 8: -\n");
165 166 167 168 169 170 171 172 } } } } catch (Number FormatException e) { Entered Wrong Data"); System.out.println("You }