Percentage Of A Double

Feb 14, 2014

Java Code:

double Compact=30.50;
double Full=40.50;
double discount=.07;
double FullDiscount= 37.67;
double CompactDiscount= 28.37; mh_sh_highlight_all('java');

My question is how do I configure this so that when / if I need to change the discount value, it automatically adjusts the % discount off of the Full or Compact?

All I can get to work is simply hardcoding it and assigning the discount value, i'm probably just messing up the syntax.

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Mar 29, 2014

Since the array is always passed by refrence, it should have been modified, but it did not.

This is my code:

import java.util.Random;
class DiceRolling {
public void processDice() {
int [] frequency = new int [ 13 ];//frequency of every occurence of sum

[Code] ....

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Where To Find Percentage Discount On Item Without Hardcoding

Feb 12, 2014

I'm trying to code an if-else statement where I need to find the percentage discount on an item without hardcoding it.

double Item1=30.50;
double Item2=40.50;
double discount=.07;

These are the values I have. Basically I just need an explanation of how to code a statement so I receive the calculated discount of a Full or Compact.

Here is the excerpt from the code, I can copy the whole code in too if needed.

Java Code:

System.out.println("You selected Item1.");
System.out.print("Have coupon? [Y or N]");
answer = kb.next();
if (answer.equalsIgnoreCase("n"))
System.out.print("Price is 30.50 per day.");
if (answer.equalsIgnoreCase("y"))
>This is what I'm looking for< mh_sh_highlight_all('java');

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Sep 14, 2014

I am trying to create a program that allows me to enter 5 students numeric grade (0-100) to a letter grade (A, B, C, D, F) and I CANNOT use an array. When I try to run my program it says main class not found, and when I change the it from a string to a void in the main method it does not work.

Java Code:

import java.util.Scanner;
public class Week3ControlStatements2
{
public static String main(String[] args){
int numberGrade = 0;
int quotient = numberGrade / 10;
int remainder = numberGrade % 10;

[Code] ....

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Feb 15, 2014

I've been writing a fraction class code below that does a number of arithmetic calcs and when I run it these are the results I get. My gcd doesn't work when it comes to negative fractions and I'm not quite sure how to print.out the boolean methods ((greaterthan)), ((equals))and ((negative)). I'm also not sure if I have implemented those 3 methods properly. I'm still learning how to do unit testing.

Enter numerator; then denominator.
-5
10
-5/10
Enter numerator; then denominator.
3
9
1/3
Sum:
-5/30
-0.16666666666666666
Product:
-5/30
-0.16666666666666666
Devide:
-15/30
-0.5
subtract:
-45/90
-0.5
negative:
1/6
0.16666666666666666
Lessthan:
1/6
0.16666666666666666
greaterthan:
1/6
0.16666666666666666

FRACTION CLASS

import java.util.Scanner;
public class Fraction
{
private int numerator; //numerator
private int denominator; //denominator

[Code] ....

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With fields that holds a tax payer social security number, last name, first name, street address, city zip code, annual income, marital status and tax liability, include a constructor that requires argument that provide values for all other fields other than the tax liability. the constructor calculates the tax liability based on annual income and percentage in the ff table

Income
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20,000-50,000
50,000 and over

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single married
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import java.io.*;
import java.util.*;
import java.text.*;
 public class Reimbursement_3_09 {
 static Toolkit tools = new Toolkit();
 public static void main (String [] args) throws Exception {
 
[Code] ....

This is my error:

[code=Java]
Reimbursement_3_09.java:33: error: incompatible types: possible lossy conversion from double to int
summary (outFile, totalAmount, ctrMiles, ctrMilesgt0, avgRe, avgMiles);
^
Some messages have been simplified; recompile with -Xdiags:verbose to get full output 1 error

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Java Code:

public boolean isEqualToD(double s_src, double s_compareTo)
{
boolean flag = false;
try
{
if(s_src == s_compareTo)
{
flag = true;

[code]...

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Okey so i want to make an array like this

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Nov 9, 2014

ScriptEngineManager mgr = new ScriptEngineManager();
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try {
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} catch (Exception e) {
}

This line: calc.setText(((double)engine.eval(expres)) + "");

*The error message for this line: Cannot cast from object to Double

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The line in bold is where that error comes up. I know it something simple but I can't remember. I declared both firstName and lastName as Strings and then the test1 I declared as double. I had a similar error in a previous assignment where I had a integer(age) input and then i had an output statement asking for a name all I needed to do was put keyboard.nextLine(); after my age input and I was fine.

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I have tried both:

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and
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Here is my code:

Java Code:

import java.util.Scanner;
public class c5e8 {
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[Code] ....

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