Please write code in #Java.

Assignment2A: Hello, Autograder? Write a program that prints out Hello, Autograder!. When you write/submit the source code version of this,this is how you can test the autograder (i.e. you should get these points). Sample Output #1: Hello, Autograder! Sample Output #2: Hello, Autograder! Assignment2B: Yardwork. If youve ever had to mow the lawn, youll realize that its hard work. Good news, everyone! You just bought an electric mower. Write a program that reads from the user, the width, length and how many square feet you can mow per dot of charge. The program then calculates how many charged batteries is needed to cut a rectangular yard based on the width, length and how many square feet per dot of charge. Your output should look like the examples below. Bold characters represent user input. Sample Output: Width: 15 Length: 90 Square feet per dot: 100 A yard of 1350 square feet will take 13.5 dots to cut. Sample Output #2: Width: 21 Length: 200 Square feet per dot: 75 An area of 4300 square feet will take 56 dots to cut. Assignment 2C: Can you still see the dots? Its an interesting time in display technology. When we talk about displays, you most often hear the term pixel, which is the smallest light-emitting speck on your screen. We use the term resolution when talking about the total number of pixels on the screen, but sometimes you want to know how dense the pixels are per inch. A 4K giant display is common, but a 4K display on your iWatch would be a seriously impressive feat! The real question is, if someone came out with a 16K television, would you be able to see the individual pixels? If you couldnt, would you still buy it? For this assignment, were going to calculate the pixels per square inch. To calculate pixels per square inch, you need to know how many pixels there are horizontally (left-toright), how many there are vertically(top-to-bottom), and the diagonal length of the display (upper-left to lower-right). Your calculations will be similar to this online calculator . According to the website, you have: Diagonal Pixels = Square root of (Vertical Pixels + Horizontal Pixels) PPI = Diagonal Pixels / inches Examples of how to calculate the square root of a number is in the Appendix below. We need to use the sqrt function, which returns a double. You need to write a program that reads in the horizontal and vertical resolution of the screen as well as its diagonal length (in inches) and print out the number of pixels per square inch. Note: you cannot have part of a pixel (e.g. 216.9), so you must round down to the nearest whole pixel. The easiest way to do this is type-cast from a float (or double) to an int. Sample Output: Horizontal pixels: 2880 Vertical pixels: 1800 Diagonal length in inches: 15.1 Pixels per inch: 224 Sample Output #2: Horizontal pixels: 1920 Vertical pixels: 1200 Diagonal length in inches: 17.0 Pixels per inch: 133 Sample Output #2: Horizontal pixels: 4096 Vertical pixels: 2160 Diagonal length in inches: 55 Pixels per inch: 84 Submission: 1. You will submit 3 separate files one for each of theassignments above. 2. Upload your files to the correct assignment submission folder in Gradescope. Do NOT submit homework in D2L. 3. The autograder will grade your work. Remember, the output of your program must match exactly for the autograder to work. 4. Well work with you on this assignment if something messes up, so long as you submit by the due date