ITCS 1213 Lab 8

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ITCS 1213 Lab 8

ArrayWork.java

/**
 *
 * @author adamwalsh
 */
import java.util.*;
public class ArrayWork {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        //a
        int[] num = new int[10];
        for(int i = 0; i<10; i++){
            num[i] = i;
            System.out.print(num[i]+ " ");
        }
        
        //b
        System.out.println("\n");
        for(int i=9; i>-1; --i){
            System.out.print(num[i]+ " ");
        }
        
        //c
        System.out.println("\n");
        for(int i=1; i<10; i+=2){
            System.out.print(num[i]+ " ");
        }
        
        //d
        System.out.println("\n");
        ArrayList<Integer> arrlist = new ArrayList<>(10);
        for(int i=0; i<10; i++){
            arrlist.add(i);
        }
        arrlist.stream().forEach((number) -> {
            System.out.print(number+ " ");
        }); 
        
        System.out.println("\n");
        arrlist.remove(4);
        arrlist.add(0);
        arrlist.stream().forEach((number) -> {
            System.out.print(number+ " ");
        });
        
        //e
        System.out.print("\n");
        arrlist.remove(2);
        arrlist.add(0);
        arrlist.stream().forEach((number) -> {
            System.out.print(number+ " ");
        });
        
        //f
        System.out.print("\n");
        int[] num2 = Arrays.copyOf(num, 20);
        for(int i = 0; i<num2.length; i++){
            System.out.print(num2[i]+ " ");
        }
    }
}

Driver.java

import java.util.*;
/**
 *
 * @author adamwalsh
 */
public class Driver {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        Invoice I1;
        Invoice I2;
        String[] inv1;
        String[] inv2;
        
        //get invoice data
        System.out.println("Format: ID, description, amount, is paid (bool)");
        System.out.println("Enter first Invoice:");
        inv1 = input.nextLine().split(",");
        double amt1 = Double.parseDouble(inv1[2]);
        boolean paid1 = Boolean.parseBoolean(inv1[3]);
        I1 = new Invoice(inv1[0], inv1[1], amt1, paid1);
        
        System.out.println("Enter second Invoice:");
        inv2 = input.nextLine().split(",");
        double amt2 = Double.parseDouble(inv2[2]);
        boolean paid2 = Boolean.parseBoolean(inv2[3]);
        I2 = new Invoice(inv2[0], inv2[1], amt2, paid2);
        
        //print invoices
        System.out.println("\nInvoices: ");
        for (String inv11 : inv1) {
            System.out.print(inv11 + " ");
        }
        
        System.out.println("\n");
        for (String inv21 : inv2) {
            System.out.print(inv21 + " ");
        }
        
        //check if same amount
        System.out.println("\n");
        if (I1.compareTo(I2) == 1)
            System.out.print("Invoices have the same amount");
        else if (I1.compareTo(I2) == -1)
            System.out.println("Invoices have different amounts");
        
        //check if same ID
        if(I1.equals(I2))
            System.out.println("Instances have same ID");
        else
            System.out.println("Instances have different ID");
    }
}

Invoice.java

/**
 *
 * @author adamwalsh
 */
public class Invoice {
    private String invoiceID, description;
    private double amount;
    private boolean isPaid;

    public Invoice(String i, String d, double a, boolean isP){
        invoiceID = i;
        description = d;
        amount = a;
        isPaid = isP;
        
    }
    
    public boolean equals(Invoice otherInvoice){
        if(this == otherInvoice)
            return true;
        if(otherInvoice instanceof Invoice) {
            Invoice that = (Invoice) otherInvoice;
            return (invoiceID == null && that.invoiceID == null) 
                    || invoiceID.equals(that.invoiceID);
        }
        
        return false;
    }

    public int compareTo(Invoice otherInvoice){
        if (this.getAmount() == otherInvoice.getAmount())
            return 1;
        else
            return -1;
    }

    /**
     * @param invoiceID the invoiceID to set
     */
    public void setInvoiceID(String invoiceID) {
        this.invoiceID = invoiceID;
    }

    /**
     * @param description the description to set
     */
    public void setDescription(String description) {
        this.description = description;
    }

    /**
     * @param amount the amount to set
     */
    public void setAmount(double amount) {
        this.amount = amount;
    }

    /**
     * @param isPaid the isPaid to set
     */
    public void setIsPaid(boolean isPaid) {
        this.isPaid = isPaid;
    }

    /**
     * @return the amount
     */
    public double getAmount() {
        return amount;
    }
    
}