Please remember that Java API specifications can be found at
http://docs.oracle.com/javase/8/docs/api/ (http://docs.oracle.com/javase/8/docs/api/)
1. Get Section_3b_FillInTheCode.java. Code the answers in java in the provided file.
See ScannerConsoleInput.java for an example for getting user input with the Scanner.
Download PracticeMethods1.java and PracticeMethods2.java.
complete PracticeMethods1.java
after completing the program provide answers to the Discussion Questions 1 and 2 under Programming Activity 2 in Chapter 3 (Section 3.16)
In a new file write a program that prompts the users for four integer values: x1, y1, x2, y2 that represent (x,y) coordinates for two points on the plane p1 and p2 respectively. Using the Point
class from Java Class Library (http://docs.oracle.com/javase/8/docs/api/java/awt/Point.html) (you need to look up the documentation) create two Point objects p1 and p2 with your input data, then print the data for both Point objects utilizing its toString method.
In a new file write a program that reads from the keyboard tha radius of a circle. Calculate and output the area and circumference of that circle. Use the following formulas: area = π * r2 and circumference = 2 * π * r
The radius should be a double.
Use DecimalFormat class to format the result, with two digits printed to the right of the decimal point (see example 3.7).
Use Math.PI for the value of pi
In a new file write a program that using a Scanner reads a file name input by the user. You should expect that the file name has one . (dot) character in it, separating the file name from the file's extension. Extract the file extension (without the dot) and print it in lowercase letters only, and then print it again in uppercase letters only, and finally output it again the way it was originally entered. Your code must not assume the length of the input. For example if the user inputs MyFile.txt, the program should extract txt, if the user inputs index.html, the program should extract html.
Complete PracticeMethods2.java
Please remember to zip all .java files together and submit for grading:
your project must compile; if the project does not compile an F will be awarded each file must contain your name; otherwise 1 point will be deducted from your score
https://cilearn.csuci.edu/courses/5532/assignments/61966 1/2
12/14/2020 L3b
the submitted source code must be formatted; otherwise 1 point will be deducted from your score
https://cilearn.csuci.edu/courses/5532/assignments/61966 2/2
