Download Homework 3 Daniel Adams CSE292 1)SALES.JAVA

Homework 3
Daniel Adams
CSE292
1)SALES.JAVA
package sales;
import java.util.Scanner;
public class sales
{
// calculates sales for 5 products
public static void main( String args[]
{
double product1 = 0; // amount sold
double product2 = 0; // amount sold
double product3 = 0; // amount sold
double product4 = 0; // amount sold
double product5 = 0; // amount sold
)
of
of
of
of
of
first product
second product
third product
fourth product
fifth product
/* Ask the user to enter product number */
System.out.println("Enter product number from 1 to 5");
Scanner input = new Scanner( System.in );
int number = 0;
number = input.nextInt();
/* Create while statement that loops until sentinel is entered */
while(number != -99)
{
double quantity;
if((number <= 5) && (number > 0))
{
System.out.printf("Enter quantity for product ");
System.out.println(number);
quantity = input.nextInt();
switch (number)
{//select case to multiply quantity and price for product
case 1:
product1 += quantity*2.98;
break;
case 2:
product2 += quantity*4.50;
break;
case 3:
product3 += quantity*9.98;
break;
case 4:
product4 += quantity*4.49;
break;
case 5:
product5 += quantity*6.87;
break;
}//end switch
System.out.println("Enter another product number from 1 to 5");
number = input.nextInt(); // loop input through until sentinel value is entered
}//end if
else
{
//error message if number equals zero or is larger than 5
System.out.println("Please enter a number between 1 and 5");
number = input.nextInt(); // look for correct user input again
}
}//end while loop
System.out.println();
//display totals of products
System.out.printf( "Product 1: $%.2f\n", product1 );
System.out.printf( "Product 2: $%.2f\n", product2 );
System.out.printf( "Product 3: $%.2f\n", product3 );
System.out.printf( "Product 4: $%.2f\n", product4 );
System.out.printf( "Product 5: $%.2f\n", product5 );
}//end main
} // end class Sales
_________________________________________________
Sales.java running
Enter product number from 1 to 5
1
Enter quantity for product 1
2
Enter another product number from 1
2
Enter quantity for product 2
3
Enter another product number from 1
3
Enter quantity for product 3
4
Enter another product number from 1
5
Enter quantity for product 5
5
Enter another product number from 1
33
Please enter a number between 1 and
0
Please enter a number
to 5
to 5
to 5
to 5
5
2)TRIANGLE.JAVA
package triangle_print;
public class triangle
{
public static void main(String[] args)
{
//triangle (a)
System.out.println("Triangle A\n");
for(int i = 1; i <= 10; i++)
{
for(int j = 1; j <=i; j++)
{
System.out.print('*');
}
System.out.println();
}
System.out.println("\n\n");
//triangle (b)
System.out.println("Triangle B\n");
for(int i = 10; i >= 1; i--)
{
for(int j = 1; j <=i; j++)
{
System.out.print('*');
}
System.out.println();
}
System.out.println("\n\n");
//triangle (c)
System.out.println("Triangle C\n");
for(int i = 10; i >= 1; i--)
{
for(int j = 10; j >= i ; j--)
{
System.out.print(' ');
}
for(int k = 1 ; k <= i; k++)
{
System.out.print('*');
}
System.out.println();
}
//triangle (d)
System.out.println("Triangle D\n");
for(int i = 1; i <= 10; i++)
{
for(int j = 10; j >= i ; j--)
{
System.out.print(' ');
}
for(int k = 1 ; k <= i;k++)
{
System.out.print('*');
}
System.out.println();
}
}
}
________________________________________________________________________
Triangle.Java Running
Triangle A
*
**
***
****
*****
******
*******
********
*********
**********
Triangle B
**********
*********
********
*******
******
*****
****
***
**
*
Triangle C
**********
*********
********
*******
******
*****
****
***
**
*
Triangle D
*
**
***
****
*****
******
*******
********
*********
**********
3)ROUNDING.JAVA
package rounding_nums;
public class rounding
{
public double roundToInteger(double number)
{
double y;
y = Math.floor(number);
return y;
}
public double roundToTenths(double number)
{
double y;
y = Math.floor(number *10 + 0.5) / 10;
return y;
}
public double roundToHundreths(double number)
{
double y;
y = Math.floor(number *100 + 0.5) / 100;
return y;
}
public double roundToThousandths(double number)
{
double y;
y = Math.floor(number *1000 + 0.5) / 1000;
return y;
}
public static void main(String[] args)
{
rounding round = new rounding();
double rounded = 9.5578;
double final1 = round.roundToInteger(rounded);
double final2 = round.roundToTenths(rounded);
double final3 = round.roundToHundreths(rounded);
double final4 = round.roundToThousandths(rounded);
System.out.print("Round Integer:");
System.out.println(final1);
System.out.print("Round Integer:");
System.out.println(final2);
System.out.print("Round Integer:");
System.out.println(final3);
System.out.print("Round Integer:");
System.out.println(final4);
}
}
______________________________________________________________
Rounding.Java Running
Round
Round
Round
Round
Integer:9.0
Integer:9.6
Integer:9.56
Integer:9.558
4)REVERSETEST.JAVA
package reverse_digits;
import java.util.Scanner;
public class reverseTest {
public void reverse(int x)
{
int last;
int reversed = 0;
while(x > 0)
{
last = x % 10; //find last digit
reversed = (reversed * 10) + last; //hold value of reverse by adding on the last value
x = x / 10; // remove last digit from the users input until it == 0
}
System.out.println ("The reverse of your number is " + reversed);
}
public static void main(String[] args)
{
System.out.print("Input integers to reverse: ");
Scanner input = new Scanner( System.in );
int number;
number = input.nextInt();
reverseTest reverse_int = new reverseTest(); // create new object
reverse_int.reverse(number);//call reverse method
}
}
___________________________________________________________
ReverseTest.Java Running
Input integers to reverse: 123456789
The reverse of your number is 987654321
5)DICEROLL_TEST.JAVA
package dice_roll;
import java.util.Random;
public class dice_rollTest {
public static void main(String[] args)
{
Random randomNumbers = new Random();
//Random randomNumbers2 = new Random();
int[] frequency = new int [13]; //array of frequency counters
//roll die 6,000,000 times; use die value as frequency index
for(int roll = 1;roll <= 36000000;roll++)//roll 36,000,000 times in order to get an accurate result
{
++frequency[ (1 + randomNumbers.nextInt(6)) + (1 + randomNumbers.nextInt(6))];//add 1 to every
each number that comes up
}
System.out.printf("%s%10s\n", "Face","Frequency");//print labels for array table
//output each array element's value
for(int face = 2; face < frequency.length;face++)//start from 2 because one will never come up
{
System.out.printf("%4d%10d\n", face, frequency[face]);// display frequency to user
}
}
}
___________________________________________________________________
DICEROLL_TEST.Java Running
Face Frequency
2
1000101
3
2002372
4
2999720
5
4000146
6
4997478
7
5998995
8
4999324
9
3998535
10
3000181
11
2001014
12
1002134
6)RANDOM_TEST.JAVA
package random_shapes;
import javax.swing.JFrame;
public class random_test
{
public static void main( String[] args )
{
// create a panel that contains our drawing
random_draw panel = new random_draw();
// create a new frame to hold the panel
JFrame application = new JFrame();
// set the frame to exit when it is closed
application.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
application.add( panel ); // add the panel to the frame
application.setSize( 450, 450 ); // set the size of the frame
application.setVisible( true ); // make the frame visible
} // end main
} // end class DrawPanelTest
========================================================================
RANDOM_DRAW.JAVA
package random_shapes
import java.awt.Color;
import java.util.Random;
import java.awt.Graphics;
import javax.swing.JPanel;
public class random_draw extends JPanel {
public void paintComponent( Graphics g )// circle
{
// call paintComponent to ensure the panel displays correctly
super.paintComponent( g );
Random randomNumbers = new Random();
Random rcolor = new Random();
for(int i = 1; i <= 10; i++)
{
//generate random numbers to choose the shape
int rand = 1 + randomNumbers.nextInt( 2 );
//random color generator
int r = rcolor.nextInt(255);
int g1 = rcolor.nextInt(255);
int b = rcolor.nextInt(255);
//set random color value
Color randomColor = new Color(r, g1, b);
//random dimensions
int x = randomNumbers.nextInt(getWidth()-200);
int y = randomNumbers.nextInt(getHeight()-200);
int width = randomNumbers.nextInt(getWidth()/2);
int height = randomNumbers.nextInt(getHeight()/2);
switch( rand )//choose oval or rectange from random number
{
case 1://print oval
g.setColor(randomColor);
g.fillOval(x, y, width, height);
break;
case 2://print rectangle
g.setColor(randomColor);
g.fillRect(x, y, width, height);
break;
}
}
}
}
_____________________________________________________________
Random_TEST.Java Running
===========================
I had no problem finishing each part of the assignment successfully while spending a good
amount of time on each program.
Score: 80/80