Separating calculations into methods simplifies modifying and expanding programs. The following program calculates the tax rate and tax to pay, using methods. One method returns a tax rate based on an annual salary.
Run the program below with annual salaries of 40000, 60000, and 0.
Change the program to use a method to input the annual salary.
Run the program again with the same annual salaries as above. Are results the same?
This is the code including what I am working on added. I will not run. I need to remove some areas to designate the scanner as the source of input but I am unsure of which area.
import java. util. Scanner;
public class IncomeTax {
// Method to get a value from one table based on a range in the other table
public static double (int search, int [] baseTable, double [] valueTable) {
int baseTableLength = baseTable. length;
double value = 0.0;
int i = 0;
boolean keepLooking = true;
i = 0;
while ((i < baseTableLength) && keepLooking) {
if (search <= baseTable[i]) {
value = valueTable[i];
keepLooking = false;
}
else {
++i;
}
}
return value;
}

Write a program that displays the following menu: geometry calculator 1. calculate the area of a circle 2. calculate the area of a rectangle 3. calculate the area of a triangle 4. quit enter your choice (1-4): if the user enters 1, the program should ask for the radius of the circle and then display its area. use the following formula: area = ď€(the square of r) use 3.14159 for ď€ and the radius of the circle for r. if the user enters 2, the program should ask for the length and width of the rectangle and then display the rectangle’s area. use the following formula: area = length * width if the user enters 3, the program should ask for the length of the triangle’s base and its height, and then display its area. use the following formula: area = base * height * .5 if the user enters 4, the program should end. input validation: display an error message if the user enters a number outside the range of 1 through 4 when selecting an item from the menu. do not accept negative values for the circle’s radius, the rectangle’s length or width, or the triangle’s base or height. note: if the user enters an improper menu choice (1-4), the program prints "the valid choices are 1 through 4. run the program again and select one of those." if the user enters a negative radius, the program prints "the radius can not be less than zero." if the user enters a negative value for height or base, the program prints "only enter positive values for base and height."