CS46A Spring 18

2A

Valentine's Day is February 14, 2018.

Write a program DaysUntilPrinter which will calculate how many days from today (whatever day the program is run) until Valentine's Day.

Chapter 2 Worked Example 1 from your text gives you a Day class and discusses how to use it. A copy of the Day class itself is at the Codecheck URL below. You need to copy the class into a Bluej project along with the starter code.

Lesson 2 of the Udacity videos also discusses the Day object. Section 19: How Many Days gives an example of working with the Day object in code.

Do the following:

• Create a Day object representing the current day. Use the constructor that does not take any parameters, like this. new Day()
  (Note: you will get the date on the server where Codecheck us running. That may be one day later than the date in San Jose)
• Assign that Day object to a variable called today. There is already a statement in the starter file to print the variable today. Do not change it. Note that no matter when the application is run, the value in today should be the current date. That means do not put any parameters in the parentheses for the Day constructor
• Create a Day object representing Valentine's Day and assign it to a variable.
• Calculate how many days Valentine's Days is from today (it will be a positive number). Print it.
• Now calculate the date 50 days from today.
• Print the year. (Use a method to get the year)
• Print the month. (Use a method to get the month)
• Print the day of the month. (Use a method to get the day)

For the draft, just add code to the starter to define the variable today and assign today's date to it. When you run the program, the date will be printed by the starter code.

2A draft:
2A final:

2B

Complete the class LeetMaker class using String methods. Remember that all the String methods are accessors. They do not change the original String. If you want to apply multiple methods to a String, you will need to save the return value in a variable.

Complete the class by doing the following

• print the word in lowercase
• in the original word, replace 
  "e" with "3" ( Use the unmodified variable word)
• print the changed word
• In the changed word, replace
  "t" with "7"
• print the this changed word
• In this newest changed word, replace
  "L" with "1" (uppercase L with the number 1),
• print the final changed word (with all the replacements)
• print the length of the word
• the code to print the original word is already included for you. Do not change that statement
  
  You will need to use the replace() method multiple times. Then print the final string. Remember that replace is an accessor method. It returns the changed version of the string. If you want to do something with the returned string - like use replace on it again - you need to save the return value in a variable.

You are given a word in the starter file and Codecheck will test with that word and with a different set of letters

For the draft, just print the word in lowercase. The original word will be printed for you.

2B draft:
2B final:

2C

In this problem, you will draw the word COAT using the Line and Ellipse class from the Udacity graphics package. Download and unzip the graphics package if you have not done so. The URL is in the syllabus area of Canvas.

Create a new Bluej project. Select Project->Import ... Navigate to the graphics files and add to your project. Be sure the folder you import contains the files directly and does not contain an extra folder. Your workbench should look similar to this.

Create a class called CoatViewer in the project. Add a main method to the class. There is no starter file this time

Your drawing should follow these specifications. The code goes in the main method.

• Each letter is 30 pixels wide and 40 pixels height
• There is a 5 pixel gap between letters
• The upper left hand corner of the C is at (20,10). This means the top left hand corner of each letter will have a y coordinate of 10.
• Draw the C in red. Use the pre-defined constant in the Color class.
• Fill the ellipse for the O (Do not draw it). Use a custom color where red is 240, green is 248, and blue is 255.
• Draw the A in magenta. The legs of the A are vertical and connected at the top. The crosspiece is parallel to the top and connects the middle of the legs. Use the pre-defined constant in the Color class.
• Draw the T in green. The vertical line starts at in the middle of the top of the T. Use the pre-defined constant in the Color class.

It is a good idea to figure out the coordinates of each letter before starting to draw. Trial and error is not efficient here.

For the draft, draw the C

Sample output for final version:

2C draft:
2C final: