To increment a variable x in Java, we code the following: x=x+1; x++; x+=1; All of the above are correct.
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To increment a variable x in Java, we code the following:
x=x+1;
x++;
x+=1;
All of the above are correct.
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- For the 8 Java statements below, identify each of the following statements as legal or illegal, and whether legal or not, state whether it represents a "narrowing" or "widening" conversion, or neither.Write a complete Java program that performs the following tasks: 1. Ask the user to enter the last two digits of his/her student ID. 2. Break the number into two digits using arithmetic operators, then store the first and second digits in integer variables named digitl and digit2 3. Find and print the following: Note: • The product of digit] and digit2. The sum of digit1 and digit2 • The average of digit1 and digit2 • The maximum of the two numbers; digit1 digit2 using a method from the class Math. Typical run of the program 03.java Compile Messages IGRASP Messages Run 1/0 Interactions End Clear Help -jGRASP exec: java 03 Enter the last two numbers of your student IDI 46 The first digit 4, the second digit -6 Product: 4 6 = 24.0 sum: 4 + 6 - 10.0 average 15.0 maximun is 6 GRASP: operation complete.Please use java A complex number is a number in the form a+bi, where a and b are real numbers and i is √(-1) The numbers a and b are known as the real part and imaginary part of the complex number, respectively. You can perform addition, subtraction, multiplication, and division for complex numbers using the following formulas: a + bi + c + di = (a+c) + (b+d)i (addition) a + bi − (c + di) = (a−c) + (b−d)i (subtraction) (a + bi) * (c + di) = (ac−bd) + (bc+ad)i (multiplication) (a + bi) / (c + di) = (ac+bd) / (c2+d2) + (bc−ad)i / (c2+d2) (division) You can obtain the Absolute Value for a complex number using the following formula: |a + bi| = √(a2 + b2) A Complex number can be interpreted as a point on a plane by identifying the (a,b) values as the coordinates of the point. The absolute value of the complex number corresponds to the distance of the point to the origin, as shown in example below. (1) Design a class named Complex for representing complex…
- Use java code Body Mass Index (BMI) is a measure of health on weight. It can be calculated by taking your weight in kilograms and dividing by the square of your height in meters. The interpretation of BMI for people 16 years or older is as follows: BMI below 16 16-18 19-24 25-29 30-35 above 35 Interpretation seriously underweight underweight normal weight overweight seriously overweight gravely overweight Write a Java program that prompts the user to enter a weight in kilograms and height in meter and display the BMI. Use nested if- else statements to solve this exercise. Here is a sample run: Enter weight in kilograms: 66.22 Enter height in meters: 1.788 Your BMI is 20.71353142 You are normal weightThe following problem shows up in a number of Java texts, including Savitch's textbook: The Harris-Benedict equation estimates the number of calories your body needs to maintain your weight if you do no exercise. This is called your basal metabolic rate, or BMR. The calories needed for a woman to maintain her weight is: WBMR = 655 + (4.3 × weight in pounds) + (4.7 × height in inches) − (4.7× age in years) The calories needed for a man to maintain his weight is: MBMR = 66 + (6.3 × weight in pounds) + (12.9 × height in inches) − (6.8 × age in years) A typical chocolate bar will contain around 230 calories. Write a program that allows the user to input his or her weight in pounds, height in inches, and age in years. The program should then output the number of chocolate bars that should be consumed to maintain one’s weight for both a woman and a man of the input weight, height, and age. NOTE: This is an application of a selection statement! Input Data: Use a named constant for the…Problem specification: There is a grid of NXN squares. We can easily determines how many different rectangles (squares are excluded) there are in the grid. For example, in a 3X3 grid, you can find 22 different rectangles, marked as the green rectangles. You can see that we did not count the red ones as they are squares. In this assignment, you will write a Java program that takes the value of N as input and determines the total area of all the rectangles in the grid. Assume that the smallest squares in the grid have length 1. So a 3X2 rectangle will have an area of 6. For example, the total area of all the rectangles in the 3X3 grid is 66.…
- Coronavirus (COVID-19) is causing a lot of panic the world over. Most people in developing countries are panicking because there are not proper test kids to determine whether one has the virus or not. You have been consulted to develop a program that could be used as a first step in determining the likelihood that one has it or not so that persons could then be referred to the testing center to be tested. Your task is to:a. Write a java program that request for1. A person’s age2. Temperature3. Dry cough4. Sneezing5. Running nose b. Your program should refer to the testing center when:1. Temperature >38oC and Sneezing, Running nose, Dry cough allrespond to yes 2. Or Temperature >38oC and any two from “a 3 – 5” above all respondto yes 3. Otherwise your program shouldn’t display go homeWrite a Java program that inputs three integer variables (called a, b, and c) that represent the length of the sides of a triangle. Your program should store the type of the triangle in an enumeration variable (called type), and display the value of the variable type. Here are the steps to follow: 1- Defines an enumeration to represent the different triangle types: EQUILATERAL, ISOSCELES, SCALENE, and ERROR. The type ERROR is added in case that the value of any triangle sides is less than or equal to zero. 2- Declare then input the three integer variables a, b, and c using a scanner object called keyboard. 3- Declare the enumeration variable type. 4- Determine the type of the rectangle (i.e. Assign a value to the variable type) 5- Print the value of the variable type. NOTE: If all sides are equal, the rectangle is EQUILATERAL. If only two sides are equal, the rectangle is ISOSCELES, otherwise the rectangle is SCALENE. Note that the type of the rectangle should be ERROR if the length…Use Java ⮚ Roman numerals are represented by seven different symbols: I, V, X, L, C, D and M. ⮚ Symbol Value I 1 V 5 X 10 L 50 C 100 D 500 M 1000.⮚ For example, 2 is written as II in Roman numeral, just two ones added together. 12 is written as XII, which is simply X + II. The number 27 is written as XXVII, which is XX + V + II. ⮚ Roman numerals are usually written largest to smallest from left to right. However, the numeral for four is not IIII. Instead, the number four is written as IV. Because the one is before the five we subtract it making four. The same principle applies to the number nine, which is written as IX. There are six instances where subtraction is used: I can be placed before V (5) and X (10) to make 4 and 9. X can be placed before L (50) and C (100) to make 40 and 90. C can be placed before D (500) and M (1000) to make 400 and 900. ⮚ Given a roman numeral, convert it to an integer
- I need help with creating a Java program described below: A Game of Twenty-One: Write a program that lets the user play against the computer in a variation of the popular blackjack card game. In this variation of the game, two six-sided dice are used instead of cards. The dice are rolled, and the player tries to beat the computer’s hidden total without going over 21. Here are some suggestions for the game’s design: Each round of the game is performed as an iteration of a loop that repeats as long as the player agrees to roll the dice, and the player’s total does not exceed 21. At the beginning of each round, the program will ask the user whether or not he or she wants to roll the dice to accumulate points. During each round, the program simulates the rolling of two six-sided dice. It rolls the dice first for the computer, and then it asks the user whether he or she wants to roll. Create a Die class to use with this application. The loop keeps a running total of both the computer…Understanding if Statements Summary In this lab, you complete a prewritten Java program for a carpenter who creates personalized house signs. The program is supposed to compute the price of any sign a customer orders, based on the following facts: The charge for all signs is a minimum of $35.00. The first five letters or numbers are included in the minimum charge; there is a $4 charge for each additional character. If the sign is made of oak, add $20.00. No charge is added for pine. Black or white characters are included in the minimum charge; there is an additional $15 charge for gold-leaf lettering. Instructions 1. Ensure the file named HouseSign.java is open. 2. You need to declare variables for the following, and initialize them where specified: A variable for the cost of the sign initialized to 0.00 (charge). A variable for the number of characters initialized to 8 (numChars). A variable for the color of the characters initialized to "gold" (color). A variable for the…Write a Java regular expression for each of the following: a. Phone numbers, such as (609) 555-1234 b. Social Security numbers, such as 123-45-6789 c. Dates, such as December 31, 1999