Select the header of a method that displays whether a character is a letter or a digit. * public static boolean isVowel ( char ch ) public static void isVowel ( char ch ) public static char isVowel ( char ch ) public static isVowel ( char ch ) None of the above ООО О
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- Predict the return type of the below method.public static _______ calculate(int a , double b){return a+b;} Choose an answer A int B boolean C double D floatWrite a method thatcomputes future investment value at a given interest rate for a specified numberof years. Use the following method header:public static double futureInvestmentValue(double investmentAmount, double monthlyInterestRate,int years)For example, futureInvestmentValue(10000, 0.05/12, 5) returns12833.59.Write a test program that prompts the user to enter the investment amount (e.g.,1,000) and the interest rate (e.g., 9%) and prints a table that displays future valuefor the years from 1 to 30, as shown below: The amount invested: 1000Annual interest rate: 9Years Future Value1 1093.802 1196.41...29 13467.2530 14730.57Write a method with the following header to display threenumbers in decreasing order:public static void displaySortedNumbers(double num1, double num2, double num3)Write a test program that prompts the user to enter three numbers and invokes themethod to display them in decreasing order.
- Write the java code body of the method countPunctuations. The method will return the number of punctuation marks in a sentence of phrase. Test Result System.out.println("Number of punctuation marks: "+countPunctuations("Help! Help! This is an emergency.")); Number of punctuation marks: 3 int countPunctuations(String str){ //your code}class Param3 { public int y; public void method1(int y) { y = y * 3; } public int getY() { return y; } } Param3 q3 = new Param3(); q3.y = 100; q3.method1(25); System.out.println(q3.getY()); what is the output for the system.out.println method and whyWrite a method that prints numbers using the following header:public static void printNumbers(int num1, int num2, intnumberPerLine)This method prints the characters between num1 and num2 with the specifiednumbers per line. Write a test program that prints ten characters per line from 1to 100. Numbers are separated by exactly one space.
- Create a Java program that contains a String that holds your favorite inspirational quote. Pass the quote to the calculateSpaces method and return the number of spaces to be displayed in the main method. public class CountSpaces { public static void main(String[] args) { // write your code here } public static int calculateSpaces(String inString) { // write your code here } }In this program, create a method with the following signature: public static double getAverage(double d1, double d2, double d3, double d4, double d5) This method will accept five doubles and return the average. Also in program, create a method with the following signature: public static char determineGrade(double avg) This method will take an average, then return the corresponding letter grade. Write in java and use test case# as an example.write a program that reads the followinginformation and prints a payroll statement.Employee’s name (e.g., Smith)Number of hours worked in a week (e.g., 10)Hourly pay rate (e.g., 9.75)Federal tax withholding rate (e.g., 20%)State tax withholding rate (e.g., 9%) In summary, design a program to• Prompt user for 5 values and read the values using Scannero Use method .nextLine() to get the String for the nameo Use method .nextDouble() to get all other numeric values• Calculating the Gross payo Gross pay = hours worked * hourly pay rate• Calculating the Federal withholdingo Federal withholding = Gross pay * federal tax withholding rate• Calculating the State withholdingo State withholding = Gross pay * state tax withholding rate• Calculating the Total deductiono Total deduction = Federal withholding + State withholding• Calculating the Net Payo Net Pay = Gross pay – Total deduction• Formatting the output same as the Sample run (Use ONLY printf)o Correctly format 2 decimals and use $ (hint…
- Program61.javaWrite a program that prompts an employee to enter his/her hourly pay rate and hours worked last week. Call a method that takes these inputs as arguments. This method should calculate and print the employee's regular pay and overtime pay in currency format. The method should return the gross pay to main. The main method should print the gross pay in currency format.Sample Output (image below) Program62.javaWrite a program that prompts for a full name (first and last) and assigns it to one string. The program then passes the full name to a void method as its sole parameter. The void method should print the first name, on one line, as many times as indicated by the length of the last name. Sample Output (image below)The following code prints the first print statement __________ times, the second print statement __________ times, for a total of ____________ total printed lines of text. /** * Main method. * * @param args command-line arguments (not used) */ public static void main(String[] args) { final int DAYS_IN_A_YEAR = 365; final int HOURS_IN_A_DAY = 24; for (int i = 0; i < DAYS_IN_A_YEAR; i++) { System.out.println("Today is day " + (i + 1) + " of " + DAYS_IN_A_YEAR); for (int j = 0; j < HOURS_IN_A_DAY; j++) { System.out.println("This is hour " + (j + 1) + " of " + HOURS_IN_A_DAY); } } } Select one: 365, 8760, 9125 364, 8736, 9100 366, 8784, 9150 noneI want the code below not to show the same random number. As it is now when the code executes the same random number can come up several times, I don't want that. So what method can I add in this below Java code to avoid that? Thanks! public class Main { public static void main(String[] args) { double result = Math.round(Math.random() * 35); System.out.println(result); } }
