I need help with writing up the Java Code.

JAVA programming ..CAN ANYBODY help me setting it up...the exersise it states that...?

• This is the assigment but i cant figure it out..i had an error but i dont get to work this program CAN U GUYS HELP ME OUT PLEASE...THIS is the exercise: Suppose that u r salesman, and ur total earnings depends on both a base assume 10000 and commission of sales that u sell. So u want the computer to perform the calcualtion for u of ur commision and the total earned. based on the users input the calculation will be different. we need to use if statements....... sales first 20000 sold second 20000 sold sold over 40000 commision 8% for the first sale 10% for the second sale 12%for sold over ..these are the answers according to the book.... amount sold 35000 saleman earned 10000 base + 3100 commission total earned $13100 THIS IS MY SOURCE CODE I START BY WRITING THIS....CAN ANYBODY HEL ME OUT? import java.util.*; public class salespay { public static void main(String[] args) { // tell the user the name of the program Scanner input = new Scanner(System.in); // tell the user this is a calculation program of sales commissions System.out.println (" This is a calculation program to compute sales commissions and sales earnings"); // Prompt the values percentage int com; double commDue1= 0.08; double commDue2= 0.1; double commDue3 = 0.12; double commission = 35000; double earnings; // number with decimal point for average double totalComm = commDue1 + commDue2 + commDue3; // give the user the following values System.out.printf("Sales Commisions"); System.out.printf("First 8%"); System.out.printf("Second 10%"); System.out.printf("Over 12&"); System.out.print("Enter amount sold: "); int nSold = input.nextInt(); //calculate the total commission if ( nSold > 20000 ) commDue1 = 20000 * commDue1; else commDue1 = nSold * commDue1; if (nSold > 40000) commDue2 = 20000 * commDue2; else if (nSold > 20000) commDue2 = (nSold - 20000) * commDue2; if (nSold > 40000) commDue3 = (nSold - 40000) * commDue3; earnings = (double )commission + 10000; }// end of main method } // end of class

• Answer:

  There are a few things here. First, don't use System.out.printf() unless you're formatting values with C-style %d, %s, %14.2f style formats. When you do use printf(), use a double %% to print a single %, since % is supposed to start a format otherwise. It would be just like Java to throw an exception on: System.out.printf( "First 8%" ); You're not formatting anything, so just use print(). Or println() if you want a newline at the end. - - - - - Near the bottom, in the calculation logic, you are computing the commDue1/2/3 variables, but not using them. You need to add them together. It looks like you want: commission = commDue1 + commDue2 + commDue3; ...before using commission to calculate earnings. - - - - - You don't output any of your results. If the printf() doesn't throw an exception, you have no idea what happened in your calculation. At the beginning, you might want to output all of your intermediate values too, not just the assigned output, so you can check calculations by hand. You might want to rethink that calculation method. It's a Really Good Idea to have separate variables for the percentages in each bracket and for the computed result. Like: double commRate1 = 0.08; ... then later commDue1 = nSold * commRate1; If you ever put your code in a loop, the 0.08 rate will be overwritten on the first iteration, invalidating all future computations with that value. - - - - - Here's a tip. Do some math, first. If you give the guy 8% on everything, then 2% on everything above 20,000 and then another 2% on everything above, then you get the same 8%/10%/12% brackets, with three simple if statements and no else. Alternatively, if you test the bracket points in descending order, you can make it simpler to read an maintain: if (nSold > 40000 { // 40001+ sold: commission is 20,000*8% + 20,00*10% + 12% of (nSold - 40,000) comm = 20000*(commRate1 + commRate2) + (nSold-40000)*commRate3; } else if (nSold > 20000) { // 20001-40000 sold: commission is 20,000*8% + 10% of (nSold - 20,000) } else { // 0-20,000 sold: commission is 8% of nSold, period. } - - - - - I've decided I won't ask what "// prompt the values percentage" means. I've written worse when under the influence of too little sleep, trying to remind myself of something I think I need to do later.