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Sample Solution - 1

Here is an authentic Java assignment solution. Take a look.

import java.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner;

public class GameCatalogueDriver {

    final static String tableHeader = “Age\t\t\t #Players\t\t Avg. Time\t\t NAME \n”
            + “Min  Max\t Min  Max\t\t Min Max \t\t                 “;

    public static void main(String[] args) {
        String testName = “Test Game 1”;

        Scanner inFile= null;
        try {
            String inFileName=”in.txt”;
            inFile = new Scanner(new File(inFileName));
        } catch(FileNotFoundException e) {
            System.out.println(“ERROR opening file, “+ e.getLocalizedMessage());
            System.out.println(“in” + System.getProperty(“user.dir”));
            System.exit(1);
        }

        GameCatalogue catalogue=new GameCatalogue();

        System.out.println(“Testing GameCatalogue Class”);
        System.out.println(“Added game Test, default Game”);
        catalogue.addGame(new Game());

        System.out.println(“Game At Position 0 : ” );
        System.out.println(tableHeader);
        //Testing getGame method of GameCatalogue & toString of Game Class
        System.out.println(catalogue.getGame(0).toString());

        //Testing GetSize
        System.out.println(“\n\nSize of Catalogue: ” +catalogue.getSize());

        System.out.println(“Test: finding game via name: “);

        Game g = new Game();
        g.setMaxAge(12);
        g.setMinAge(10);
        g.setName(testName);
        g.setMaxPlayers(5);
        g.setMinPlayers(2);
        g.setMaxPlayTime(20);
        g.setMinPlayTime(10);
        catalogue.addGame(g);
        // Testing find game method
        System.out.println(“************* Finding Game by Name ***********************”);
        Game foundGame = catalogue.findGame(testName.trim());
        if(foundGame != null){
            System.out.println(“************* GAME FOUND ***********************”);
            System.out.println(tableHeader);
            System.out.println(catalogue.findGame(testName.trim()));
        }
        else {
            System.out.println(“GAME not found in Catalogue”);
        }


        System.out.println(“***************** Reading from File ********************”);
        //readFromFile  of GameCatalogue & Game Class
        catalogue.readFromFile(inFile);
        System.out.println(tableHeader);
        System.out.println(catalogue);

        System.out.println(“***************** Removing Game ********************”);
        System.out.println(“Removing Game at position 3”);
        catalogue.removeGame(3);
        System.out.println(tableHeader);
        System.out.println(catalogue);


        System.out.println(“***************** Sorting Game Catalogue ********************”);
        catalogue.sortCatalogue();
        System.out.println(tableHeader);
        System.out.println(catalogue);

    }
}

Sample Solution - 2

Take a look at an authentic Java assignment solution. Take a look.

/**
 * The Class SecureBankAccount represents a secure bank account.
 *
 * @author
 * @version Mar 30, 2022
 */
public class SecureBankAccount {

 

    private boolean locked;
    private double balance;
    private int numBalanceRequests;
    private double amountWithdrawn;

 

    /**
     * Instantiates a new secure bank account. The object begins in an unlocked
     * state, with the number of balance requests and the amount withdrawn set to
     * zero.
     *
     * @param startingBalance the starting balance
     */
    public SecureBankAccount(double startingBalance) {
        if (startingBalance < 0)
            startingBalance = 0;

 

        this.balance = startingBalance;
        amountWithdrawn = 0;
        locked = false;
        numBalanceRequests = 0;
    }

 

    /**
     * Gets the balance. It increments the number of balance requests if it is not
     * locked. If the number of balance requests is 2, locked is set to true.
     *
     * @return If it is locked, it returns -1. If it is not locked, it returns the
     *         balance. I
     */
    public double getBalance() {
        if (locked)
            return -1;

 

        numBalanceRequests++;

 

        if (numBalanceRequests == 2)
            locked = true;

 

        return balance;
    }

 

    /**
     * Withdraw from bank account. It checks to see if the balance is high enough to
     * cover the withdrawal. If both conditions are met, the amount to withdraw is
     * subtracted from the balance, added to the amountWithdrawn, and returned from
     * the method. If the conditions are not met, -1 is returned from the method and
     * no changes are made to the state of the object. If money was successfully
     * withdrawn, then the value of amountWithdrawn is checked against 500. If it
     * meets or exceeds 500, locked is set to true
     *
     *
     *
     * @param amount the amount to withdraw
     * @return the amount if withdraw successful, otherwise -1
     */
    public double withdraw(double amount) {
        if (amount < 0)
            amount = 0;

 

        if (!locked && balance >= amount) {
            amountWithdrawn += amount;
            balance -= amount;

 

            if (amountWithdrawn >= 500)
                locked = true;

 

            return amount;
        }

 

        return -1;
    }

 

    /**
     * Deposit to bank acount. If it is not locked, the amount passed is added to
     * the balance and is returned from the method. If it is locked, then -1 is
     * returned from the method and no changes are made to the balance.
     *
     * @param amount the amount
     * @return the amount if deposit successful, otherwise -1
     */
    public double deposit(double amount) {
        if (amount < 0)
            amount = 0;

 

        if (!locked) {
            balance += amount;
            return amount;
        }

 

        return -1;
    }

 

    /**
     * Reset the object state. If it is locked, it is unlocked (locked set to
     * false), and numbalanceRequests and amountWithdrawn are each reset to zero. It
     * returns true. If it is not locked, no changes are made to the state of the
     * object and it returns false.
     *
     * @return true, if reset
     */
    public boolean reset() {
        if (locked) {
            locked = false;
            numBalanceRequests = 0;
            amountWithdrawn = 0;
            return true;
        }

 

        return false;
    }

 

}

Sample Solution - 3

Here is an authentic Java assignment solution. Take a look.

/**
 * The Class MyInteger represents an integer.
 * @author
 */
public class MyInteger {

    private int value;

    /**
     * Instantiates a new my integer.
     *
     * @param value the value
     */
    public MyInteger(int value) {
        this.value = value;
    }

    /**
     * Converts To integer.
     *
     * @return the int value
     */
    public int toInteger() {
        return value;
    }

    /**
     * Checks if is even.
     *
     * @return true, if is even
     */
    public boolean isEven() {
        return isEven(value);
    }

    /**
     * Checks if is odd.
     *
     * @return true, if is odd
     */
    public boolean isOdd() {
        return isOdd(value);
    }

    /**
     * Checks if is prime.
     *
     * @return true, if is prime
     */
    public boolean isPrime() {
        return isPrime(value);
    }

    /**
     * Checks if is even.
     *
     * @param value the value
     * @return true, if is even
     */
    public static boolean isEven(int value) {
        return value % 2 == 0;
    }

    /**
     * Checks if is odd.
     *
     * @param value the value
     * @return true, if is odd
     */
    public static boolean isOdd(int value) {
        return !isEven(value);
    }

    /**
     * Checks if is prime.
     *
     * @param value the value
     * @return true, if is prime
     */
    public static boolean isPrime(int value) {

        if (value < 0)
            value = -value;

        for (int i = 2; i < value; i++) {
            if (value % i == 0)
                return false;
        }

        return true;
    }

    /**
     * check if value is equal.
     *
     * @param value the value
     * @return true, if equal
     */
    public boolean equals(int value) {
        return this.value == value;
    }

    /**
     * check if value is equal.
     *
     * @param integer the integer
     * @return true, if equal
     */
    public boolean equals(MyInteger integer) {
        return equals(integer.value);
    }

    /**
     * Parses the integer.
     *
     * @param value the value to parse
     * @return the integer
     */
    public static int parseInt(String value) {
        int answer = 0, factor = 1, digits = 0;
       
        // overflow
        if (value.length() >= 10 && value.compareTo(“2147483647”) > 0)
            throw new IllegalArgumentException();

        // underflow
        if (value.charAt(0) == ‘-‘ && value.substring(1).length() >= 10
                && value.substring(1).compareTo(“2147483648”) > 0)
            throw new IllegalArgumentException();

        boolean negative = false;

        for (int i = value.length() – 1; i >= 0; i–) {

            char c = value.charAt(i);

            if (c == ‘-‘) {
                if (i == 0) // first position
                    negative = true; // negative
                else
                    throw new IllegalArgumentException();
            } else if (c < ‘0’ || c > ‘9’) // not a digit
                throw new IllegalArgumentException();
            else {
                // convert to digit
                digits++;
                answer += (c – ‘0’) * factor;
                factor *= 10;
            }

        }

        if (digits == 0) // no digits
            throw new IllegalArgumentException();

        // convert to negative
        if (negative)
            answer = -answer;

        return answer;
    }

}

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