Given the following Java code, choose the CORRECT statement from the below. String txt="Football"; System.out.println(txt.toUpperCase()); String is a method, and toUpperCase() is a class. String is a class, and toUpperCase() is a method. What is the output of the following Java code ? double d = 1* Math.round(-7.6); System.out.println("r="+(d+8)); r=16.0 else r=1.0 Or=-1.0 r=0.0 What is the output of the following Java code ? char ch = '#'; if (!Character.isLetter(ch)) System.out.println(++ch); System.out.println(--ch); S %
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Basic Java Syntax (Practice 03)
Introduction to Java
-Explanation through with answers.
-Without abbreviation make it clear writing.
Thank you.
Step by step
Solved in 5 steps
- Create a java class called Question4, and implement the following points inside the main method:1. Reads a string from the standard input device and store it in a variable called inputStr.2. Find all the letter characters in inputStr and store them in another string variable called letterChars. Then, convert all the characters in letterChars to uppercase characters (i.e., capital letters).3. Display the contents of letterChars to the user using a message dialog box.For example, if the contents of inputStr is “q123Ab455c6d”, then the final contents of letterChars will be “QABCD”.The following Java code is poorly structured. Rewrite it so that it has a better structure and avoids redundancy. To help eliminate redundancy, convert the code into a method named spending that accepts two parameters: a Scanner for the console, and a String for a single person's name, and prints the appropriate information about that person's bills. Your method could be called twice (once for John and once for Jane) to replicate the original code's behavior. public void spending(Scanner console,String name) { System.out.print("How much will " + name + " be spending?"); double amount = console.nextDouble(); System.out.println(); int numBills = (int) (amount / 20.0); if (numBills * 20.0 < amount) { numBills++; } System.out.println(name + " needs " + numBills + " bills"); } The code above is all I was given to work with, which is why I'm a bit confused and need help. Thank you.MethodsJava Write the appropriate method headings using the provided method name for the following processes:1.) Given the radius of a circle, print the area of a circle - printArea. 2.) Accept an integer, compute for the square of the number and return the String equivalent of the square of the number - makeString 3.) Calculate and return the sum of two decimal numbers - getSum. 4.) Given a student’s name and three test scores (of type int), print the student’s name and average test score - printStudentDetails. 5) Compute and return the average speed of a car, given the distance traveled (as type double) and traveling time (in hours and minutes, both of type int) - getAverageSpeed.
- Write a method lastNameFirst that takes a string containing a name such as "Harry Smith" or "Mary Jane Lee", and that returns the string with the last name first, such as "Smith, Harry" or "Lee, Mary Jane".Write a method in Java named printGPA that calculates a student's grade point average. The user will type a line of input containing the student's name, then a number of scores, followed by that many integer scores. Here are two example dialogues: Enter a student record: Maria 5 72 91 84 89 78Maria's grade is 82.8Enter a student record: Jordan 4 86 71 62 90Jordan's grade is 77.25 For example, Maria's grade is 82.8 because her average of (72 + 91 + 84 + 89 + 78) / 5 equals 82.8. Use a Scanner for user input.Write a Java Code for the below: A prime number is a number that is evenly divisible only by itself and 1. For example, the number 5 is prime because it can be evenly divided only by 1 and 5. The number 6, however, is not prime because it can be divided evenly by 1, 2, 4, and 6. Write a method named isPrime, which takes an integer as an argument and returns true if the argument is a prime number, or false otherwise. Also write main method that displays prime numbers between 1 to 500.
- Create a method in java that takes a value and indicates whether it is positive or negative by a return a Boolean value. Declared as: boolean is positive (float a) (with a screenshot of the code please)*in java* Write a method printShampooInstructions(), with int parameter numCycles, and void return type. If numCycles is less than 1, print "Too few.". If more than 4, print "Too many.". Else, print "N: Lather and rinse." numCycles times, where N is the cycle number, followed by "Done.". End with a newline. Example output with input 2: 1: Lather and rinse. 2: Lather and rinse. Done. Hint: Declare and use a loop variable. import java.util.Scanner; public class ShampooMethod { /* Your solution goes here */ public static void main (String [] args) {Scanner scnr = new Scanner(System.in);int userCycles; userCycles = scnr.nextInt();printShampooInstructions(userCycles);}}Add a new Java class to your project by right clicking on the src folder in the Project pane and select New > Java Class.Enter Hours as the name for this class, and IntelliJ will add it to the files in the src folder for your project. Remember tocopy and insert the standard heading for the main method as you did for Program 2.Write a program that prompts the user to enter a number of hours, and produces the equivalent number of days as a wholenumber along with the number of hours left over. Assume that a day has exactly 24 hours. The following example showsthe format to use for your output, where the input entered by the user is underlined.Enter the number of hours: 100100 hours is 4 days, plus 4 hours.Define Variables: The number of hours will be a whole number, and we would like to obtain results as whole numbers ofdays and hours, so use the int data type to declare the variables to hold the numbers of hours input, as well as the results(the number of days and number of hours left…
- Given a method named getRandomNumber that has no parameters and returns a random int value, call the method and save the return value in a new variable named myRand. this is needed in javaMUST BE IN JAVA Following the example of the Circle class in Section 9.2, design a class named Rectangle to represent a rectangle. The class contains: - Two double data fields named width and height that specify the width and height of the rectangle. The default values are 1 for both width and height. - A no-arg constructor that creates a default rectangle. - A constructor that creates a rectangle with the specified width and height. - A method named getArea() that returns the area of this rectangle. - A method named getPerimeter() that returns the perimeter. Draw the UML diagram for the class and then implement the class. Write a test program that creates two Rectangle objects—one with width 4 and height 40 and the other with width 3.5 and height 35.9. Display the width, height, area, and perimeter of each rectangle in this order.Sample RunThe area of a rectangle with width 4.0 and height 40.0 is 160.0The perimeter of a rectangle is 88.0The area of a rectangle with width 3.5 and…Create a method which will accept a positive integer input and return a value according to the following rules: For multiples of 3 return “Fizz” For multiples of 5 return “Buzz” For multiples of both 3 and 5, return “FizzBuzz” For any other input (valid or otherwise) return a string representation of the input I have this to start: class Solution: def print_fizz_buzz(self, input):# Your code goes here These are the tests: from solution import Solutionimport unittest class SolutionTests(unittest.TestCase): def test1(self):solution = Solution()self.assertEqual(solution.print_fizz_buzz(15), "FizzBuzz") if __name__ == '__main__':unittest.main()