Assignment Description

Write a program to create license plates for Colorado, Wyoming, and Utah. The program will prompt the user to enter two values $$ a character and a number $$ and then displays a randomly generated license plate based on those two characters. The character represents the state, and the number represents the type of license plate. For this assignment, use following characters to denote the state and plate type:

C: Colorado

W: Wyoming

U: Utah

$1$: Regular license plate

$2$: Adopt a Shelter Pet license plate

$3$: Fire Fighter license plate

Once state and plate type are BOTH obtained, generate a random license plate using the following given patterns. Be sure to notice where there are spaces and dashes in the different license plates:

State

Description

Template

Example

Colorado

$3$ digits, a dash, $3$ letters

###$-$XXX

$689-$TXV

Wyoming

$1$ digit, a space, $5$ digits

# #####

$716283$

Utah

$3$ letters $,$ a space, $1$ digit, $1$ letter

XXX #X

PWW $4$M

# $-$ represents a number$$ X $$ represents a letter

Specifications

$1.$ Add this assignment to your project called CS$1150$

$2.$ Create a Java class within that project called LastNameFirstNameAssignment$4$

$3.$ Follow $"$CS$1150$ Programming Assignments Policy"

$4.$ Write code that:

$$ Prompts user for the state and plate type

$$ Read the entered information as one string $($e$.$g$.$ user enters C$2$ for Colorado Adopt a Pet$)$

$$ Extracts from the string the state $($the character $$C$,$W$,$ or $$U$)$ and ensures it is valid.

$$ Extracts from the string the type $($the character $1,2,$ or $3)$ and ensures it is valid.

$$ Once state and type are validated:

o Generate a random license plate based on the state and plate type.

o Display state name, number, and plate type.

o For example: Wyoming $478213---$ Adopt a Shelter Pet

$5.$ The code must handle user validation for:

$$ State

o If an invalid state is entered, MUST print message and END PROGRAM

$$ Type

o If invalid plate type is entered, MUST print message and END PROGRAM

$$ Note:

o END PROGRAM means: once an input error occurs, the program must display an error message and perform no additional processing.

o For example:

$$ If the user enters P$2$ when asked for the characters, the program must display an invalid state error message and complete at that point.

$$ At this point, your code must NOT process the type of license plate.

$$ See error output example #$1$ below.

o Use NESTED IF statements to properly handle errors in user input.

$$ The if statement performs a test $($say on the state character$)$ and if the test fails the else clause executes, displays the error message, and the program terminates.

$$ DO NOT use System.exit$(0)$ to exit program if an error occurs.

$$ DO NOT use break or return statements if an error occurs.

$$ Using System.exit, return, or break will result in loss of points for correctness.

$$ The purpose is to learn to write properly nested if$-$statements.

Must Do and Tips

Must Do: General

$$ Reading user input

o The state and plate type must be entered on the same line.

$$ This means both values must be entered before the enter key is pressed.

o Read user input for the state and plate type as a String

$$ Use the nextLine$()$ method in Scanner class to read state and type as a String.

$$ Next extract each character from the string using the charAt$()$ method.

$$ Your code must accept lower$-$case or upper$-$case values for the state character.

$$ Use correct data types and constants

o To eliminate $$magic numbers$$ use constants to increase code readability.

$$ Magic numbers are numeric values in the code whose meaning is not known.

o Constants should be used for all the different states, for example:

$$final char COLORADO $=\text{'}$C$\text{'}$;

$$ Must use nested$-$if and switch statement

o Must use nested if$-$statements for the main structure of the code, not a multiway$-$if$.$

o Uses a switch statement when printing each license plate $$ see lecture #$6$

Must Do: Use random method provided in Math class

$$ Use the random method in the Math class $$ Math.random$()--$ read all about it in section $4\mathrm{.}2\mathrm{.}5$

$$ Generate different letters and numbers for each number or letter in the license plate.

$$ DO NOT generate one letter or number and use it repeatedly.

$$ DO NOT use the Random class provided by Java.

$$ DO NOT create a string of numbers or letters and then randomly get values out of that string.

$$ DO NOT create an array of numbers or letters and then randomly get values out of the array.

Tip: Play with the random method to learn how it works

$$ Use Math.random and the ASCII table in Appendix B to create the necessary values.

$$ To create numbers:

o You do not need to worry about generating numbers with leading zeros such as $00827.$

o You may assume the following:

$$ When creating $1-$digit value, the values run between $1$ and $9$

$$ When creating $2-$digit value, the values run between $10$ and $99$

$$ When creating $3-$digit value, the values run between $100$ and $999$

$$ When creating $4-$digit value, the values run between $1000$ and $9999$