More program

Objective

Create a Java program that behaves like the Unix more command, you must display the contents of a text file and ask the user to press Enter every time the screen is full.

As a simple method, you can display truncated lines at 79 characters and stop after every 24 lines.

Input

Output

Lorem ipsum dolor sit amet consectetur adipiscing elit nulla commodo facilisis.
Est litora vitae imperdiet senectus sed purus lacus fermentum libero.
Odio faucibus nibh massa per euismod etiam netus nunc. Mus ad aliquam non
fermentum eu libero eros nullam varius curabitur, ligula et sem sapien eget fri
convallis nostra suscipit, metus egestas curae penatibus potenti fames urna
vulputate himenaeos. Venenatis dapibus congue quis aptent tincidunt vivamus
hendrerit litora purus, sollicitudin vestibulum malesuada fusce urna neque luct

Curabitur netus dictum in mollis bibendum auctor ante, molestie suspendisse hab
nostra tempor eu facilisi, nulla quam potenti integer aenean nisi. Litora vivam
euismod justo sociis malesuada aliquet leo pretium nullam ullamcorper vitae nos
dis facilisis vehicula, taciti molestie semper aliquam aptent fermentum maecena
felis commodo blandit neque dui dapibus donec. Id erat curabitur sem dapibus er
feugiat per phasellus enim class mauris auctor, tortor magnis nisi vivamus veli
Curabitur netus dictum in mollis bibendum auctor ante, molestie suspendisse hab
nostra tempor eu facilisi, nulla quam potenti integer aenean nisi. Litora vivam
euismod justo sociis malesuada aliquet leo pretium nullam ullamcorper vitae nos
dis facilisis vehicula, taciti molestie semper aliquam aptent fermentum maecena
felis commodo blandit neque dui dapibus donec. Id erat curabitur sem dapibus er
feugiat per phasellus enim class mauris auctor, tortor magnis nisi vivamus veli

Lorem ipsum dolor sit amet consectetur adipiscing elit nulla commodo facilisis.
Est litora vitae imperdiet senectus sed purus lacus fermentum libero.
Odio faucibus nibh massa per euismod etiam netus nunc. Mus ad aliquam non

Press Enter to continue...

Solution

MoreCommand.java

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;

public class MoreCommand {
    public static void main(String[] args) {
        // Path of the text file
        String filePath = "text_file.txt";

        try {
            // Create a FileReader object to read the text file
            FileReader file = new FileReader(filePath);
            BufferedReader reader = new BufferedReader(file);

            // Maximum characters per line
            int maxCharactersPerLine = 79;

            // Maximum number of lines to display before waiting for user input
            int maxLinesPerScreen = 24;

            // Counters
            int lineCounter = 0;
            int characterCounter = 0;

            // Read the first line of the file
            String line = reader.readLine();

            // Iterate over all lines of the file
            while (line != null) {
                // Truncate the line to maxCharactersPerLine if necessary
                if (line.length() > maxCharactersPerLine) {
                    line = line.substring(0, maxCharactersPerLine);
                }

                // Display the line in the console
                System.out.println(line);

                // Increment counters
                lineCounter++;
                characterCounter += line.length();

                // If the maximum number of lines per screen is reached, wait for user input
                if (lineCounter == maxLinesPerScreen) {
                    System.out.println("Press Enter to continue...");
                    System.in.read(); // Wait for user input
                    lineCounter = 0;
                }

                // Read the next line
                line = reader.readLine();
            }

            // Close the BufferedReader and FileReader
            reader.close();
            file.close();

        } catch (IOException e) {
            // Handle possible input/output exceptions
            e.printStackTrace();
        }
    }
}

import java.io.BufferedReader; import java.io.FileReader; import java.io.IOException; public class MoreCommand { public static void main(String[] args) { // Path of the text file String filePath = "text_file.txt"; try { // Create a FileReader object to read the text file FileReader file = new FileReader(filePath); BufferedReader reader = new BufferedReader(file); // Maximum characters per line int maxCharactersPerLine = 79; // Maximum number of lines to display before waiting for user input int maxLinesPerScreen = 24; // Counters int lineCounter = 0; int characterCounter = 0; // Read the first line of the file String line = reader.readLine(); // Iterate over all lines of the file while (line != null) { // Truncate the line to maxCharactersPerLine if necessary if (line.length() > maxCharactersPerLine) { line = line.substring(0, maxCharactersPerLine); } // Display the line in the console System.out.println(line); // Increment counters lineCounter++; characterCounter += line.length(); // If the maximum number of lines per screen is reached, wait for user input if (lineCounter == maxLinesPerScreen) { System.out.println("Press Enter to continue..."); System.in.read(); // Wait for user input lineCounter = 0; } // Read the next line line = reader.readLine(); } // Close the BufferedReader and FileReader reader.close(); file.close(); } catch (IOException e) { // Handle possible input/output exceptions e.printStackTrace(); } } }

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