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CSC 3020 Java Programming Assignment 01 40 points Due 01/25/2024 (11:45 A.M.) Assignment Objectives: ■■ To understand the meaning of Java language specification, API, JDK™, JRE™. ■■ To create, compile, and run Java programs. ■■ To explain the runtime errors. ■■ To obtain input from the console using the Scanner class. ■■ To explore Java numeric primitive data types: byte , short , int , long , float , and double . ■■ To distinguish between postincrement and preincrement and between postdecrement and predecrement. ■■ To cast the value of one type to another type. ■■ To declare boolean variables and write Boolean expressions using relational operators. ■■ To generate random numbers using the Math.random() method. ■■ To program using selection statements for a variety of examples. ■■ To combine conditions using logical operators ( ! , && , || , and ^ ). ■■ To implement selection control using switch statements. ■■ To examine the rules governing operator precedence and associativity. Solution to this assignment will not be posted on Canvas; however, any question can be discussed in the class upon request of a student. All assignments must be submitted by the Canvas. No email or hard copy is accepted. You must follow the following format: a. For non-programming questions, use a text file to type your answers. Don’t use the text box on the Canvas to answer the questions or to write comments, we will not read it. b. State your answer clearly. c. For programming questions, include only the source file for each problem. d. Submit your file to the Canvas. You must submit your assignment on time; otherwise, you will receive zero. In addition, you cannot submit your file more than one time. e. There will be several folders on the Canvas. You need to upload your file(s) using the correct folder on the Canvas. f. Name each file: “Assignment Number(Question number(s))”. g. To upload your file(s):  In Course Navigation, click the Assignments link.  Click the title of the assignment.  Click the  Submit  Assignment button.  Add  File . ...  Add Another  File . ...  Submit  Assignment. ...  View  Submission . It is your responsibility to make sure that each file is uploaded correctly. If you uploaded a wrong file, you receive zero; files will not be accepted after due date even if you have a prove that the file is created before the due date. Make sure you review the Cheating & Plagiarism policy on Canvas.

Answer question 1 on a text file (include question number and the answer only); write a program for each of Q.2 - Q.5. Convert .java files to text files. Submit 5 text files to Canvas by the due date. 1. (12 points) Give a brief answer for each of the following questions: a) What is the difference between an interpreted language and a compiled language? b) What does JDK stand for? What does JRE stand for? c) What is the Java source filename extension, and what is the Java bytecode filename extension? d) What is the command to compile a Java program? e) What is the command to run a Java program? f) What is the JVM? g) If your program needs to read integers, but the user entered strings, an error would occur when running this program. What kind of error is this? h) Show the output of the following code: double amount = 5; System.out.println(amount / 2); System.out.println(5 / 2); i) Can the following conversions involving casting be allowed? boolean b = true ; i = ( int )b; int i = 1; boolean b = ( boolean )i; j) What data types are required for a switch variable? If the keyword break is not used after a case is processed, what is the next statement to be executed? k) What is y after the following switch statement is executed? Rewrite the code using an if-else statement. x = 3; y = 3; switch (x + 3) { case 6: y = 1; default: y += 1; } l) Why does the Math class not need to be imported?

Enter your lottery pick (three digits): 987 Lottery is 637 Match one digit: you win $1,000 Enter your lottery pick (three digits): 683 Lottery is 836 Match all digits: you win $3,000 Enter your lottery pick (three digits): 494 Lottery is 494 Exact match: you win $10,000 5. (6 points) Write a program that prompts the user to enter the center coordinates and radii of two circles and determines whether the second circle is inside the first or overlaps with the first, as shown in the below figure. Hint : circle2 is inside circle1 if the distance between the two centers < = r1 - r2 circle2 overlaps circle1 if the distance between the two centers <= r1 + r2 . Test your program to cover all cases. Here are sample runs: Enter circle1’s center x-, y-coordinates, and radius: 0.5 5.1 13 Enter circle2’s center x-, y-coordinates, and radius: 1 1.7 4.5 circle2 is inside circle1 Enter circle1’s center x-, y-coordinates, and radius: 3.4 5.7 5.5 Enter circle2’s center x-, y-coordinates, and radius: 6.7 3.5 3 circle2 overlaps circle1 Enter circle1’s center x-, y-coordinates, and radius: 3.4 5.5 1 Enter circle2’s center x-, y-coordinates, and radius: 5.5 7.2 1 circle2 does not overlap circle1