Decimal Format Utility Of Java
Oct 13, 2014
I am working on a program where i calculate a fee using a method. I know i have to import the decimal format utility of java. "import java.text.DecimalFormat;" then i have to create an object for the decimal format. With "DecimalFormat f = new DecimalFormat("0.00");" What i am wondering how do i apply it to my system.out.println statement. I know i have to use for instance f.format(calculateFee()); Is that the right syntax for displaying the results because i generate a syntax error that way.
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May 19, 2014
package billing.util;
import java.math.RoundingMode;
import java.text.NumberFormat;
import java.util.Scanner;
public class CurrencyFormat {
private static final int USD = 0;
private static final int JPY = 1;
[Code] .....
i should be able to use USD, CNY, and JPY. However it seems only the USD ($) will run... doesnt matter which currency symbol the user requests.
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May 12, 2015
I am using NetBeans IDE 8.0.2 to program Java code. I am a beginner in Java.
Instead of getting two decimal places after the point, I am getting three despite using the code format for two ("##.##"). Actually, this happens even if I remove the format code between the quotes. It is as if the program cannot see the format code. Why this happens ?
Here is the relevant program code:
private void convertButtonActionPerformed(java.awt.event.Action Event evt) {
double inputNumber = 0;
// sets the decimal format
[Code]....
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Oct 25, 2014
I need this program to print out the gpa down to 2 decimal places and I can't figure out how to do it. It keeps saying it can't find decimal format and I'm not sure how to define it.
Java Code:
import java.util.Scanner;
public class GPACalculator {
public static void main(String[] args) {
double creditHours = 0;
double gradePoints = 0;
[Code] ....
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Jul 25, 2014
import javax.swing.JOptionPane;
import java.text.DecimalFormat;
public class Sample3 {
public static void main(String args[]){
double amount,iRate,monPay,totalPay;
int years;
String amountStr;
[Code] ....
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Oct 24, 2014
so I need my program to print in decimal format and I keep getting an error saying that it cant find symbol "decimalFormat". here's what I have so far.
import java.util.Scanner;
public class GPACalculator {
public static void main(String[] args) {
int creditHours = 0;
int gradePoints = 0;
[Code] .....
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Jun 19, 2014
I am working on a project that just calculates simple interest based upon a principal and a percent interest rate written as .xxxx from user.
I need the Loan amount and the final interest calculation to show up as a currency with commas in appropriate areas, the Rate to be expressed as X.xxx% instead of .xxxx
I keep getting this error when I compile:
C:JavaInterestCalculator.java:46: error: incompatible types: String cannot be converted to double
principal = formatter.format(principal);
^
C:JavaInterestCalculator.java:49: error: incompatible types: String cannot be converted to double
rate = formatter.format(rate);
^
C:JavaInterestCalculator.java:52: error: incompatible types: String cannot be converted to double
totalInterest = formatter.format(totalInterest);
^
3 errors
Tool completed with exit code 1
And here is my code
import java.util.Scanner;
import java.text.NumberFormat;
import java.text.DecimalFormat;
// class declaration
public class InterestCalculator
{
// main method declaration
[Code] .....
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May 8, 2014
I am working with a program I wrote for class. I got it to compile and do what I want, But I was wondering how I can format my methods to to display a decimal with 1-2 decimal places. Would I create a method in my NumberAnalysis class to do it for me? Or would I declare an instance of the DecimalFormat class in my main method?
import java.util.Scanner; //Needed for Scanner Class
import java.io.*; //Need for File and IOException
import java.text.DecimalFormat;
public class Ex8_11 {
public static void main(String[] args) throws IOException{
{
DecimalFormat decformatter = new DecimalFormat("#0.00");
[Code] .....
This is my output:
Lowest Number: 1.09
Highest Number: 82.76
Total Number: 367.89000000000004
Total Average Number: 30.657500000000002
Think I just solved the answer to my own question, I did it by declaring double variables in my main method and called the methods and instantiated the variables into the methods... Is there a better way to do this?
package lesson4.skowronek;
import java.util.Scanner; //Needed for Scanner Class
import java.io.*; //Need for File and IOException
import java.text.DecimalFormat;
public class Ex8_11 {
public static void main(String[] args) throws IOException{
[Code] ....
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Apr 13, 2015
I have an assignment to create a JFrame pizzaorder and at the end of this order after the totalprice is calculated I need to format the number to ##.## but I keep getting a cannot find symbol error.
Source Code:
import java.awt.*;
import javax.swing.*;
import javax.swing.event.*;
import java.awt.event.*;
public class pizzaorder extends JFrame implements ItemListener, ListSelectionListener
//top section will have centered title telling the name, and under it seperate instructions to choose your pizza and toppings
[Code] ....
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Nov 7, 2014
I am working on a number of utility functions for square matrices and arrays, and I keep having trouble with segmentation faults.
arrayUtils~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
public class ArrayUtils {
//This function takes an array a, and returns the sum between indices
//i and j, where i is the lower index and j is the upper index. int size makes
//sure that the function doesn't go out of bounds.
public static int subSum(int[] a,int i, int j) {
int sum=0;
[Code] .....
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Jan 1, 2015
I'm using eclipse. I'm going to get straight to the point and give all the info I can, if the values in the first code box are used, shouldn't these values be left after all in the second box is done:
remainder=23, arr[0]=100, div=23/10=2.3, whole=2, and decimal=3?
When I use this code, div comes out to be just (2.0).
Java Code:
int leng=10;
arr[0]=123; //int
arr[1]=100; //int mh_sh_highlight_all('java'); Java Code: if (arr[0]!=arr[1]){
int remainder=arr[0]-arr[1];
arr[0]=arr[0]-remainder;
double div=remainder/leng; //double div=Double.valueOf(remainder/leng);
int whole=(int) Math.floor(div);
int decimal=(int) ((div-whole)*leng); mh_sh_highlight_all('java');
I'm not sure were I'm going wrong in how div is being calculated, but I ultimately need div to be 2.3.
I've also used the second option commented out which still gives (2.0).
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Apr 2, 2014
Here is my code and i want to convert number into 2 decimal but this code not give me result how to check my code.
import javax.swing.JOptionPane;
public class showtime{
public static void main(String[] args){
double total_mili=System.currentTimeMillis();
JOptionPane.showMessageDialog(null,total_mili, "Total milisecond",JOptionPane.INFORMATION_MESSAGE);
double seconds=total_mili/60;
double sec=(double)(seconds * 100) / 100.000;
JOptionPane.showMessageDialog(null,seconds, "Total Second",JOptionPane.INFORMATION_MESSAGE);
JOptionPane.showMessageDialog(null,sec, "Total Second",JOptionPane.ERROR_MESSAGE);
}
}
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Jan 18, 2015
I am having trouble figuring out where to put %.2f in my code. I need it to get my answers for surfaceArea and Volume to be rounded to two decimal points. I have everything completed but wherever i put it, it seems to not work.
System.out.println("This program will compute the volume and surface area of a rectangular prism.");
String output;
double length;
double width;
double height;
double volume = 0;
double surfaceArea = 0;
System.out.printf("%.2f", surfaceArea);
[code]....
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Apr 10, 2014
I'm having trouble formatting my output and issues with the decimal places. Here's my code:
import java.util.Scanner;
import java.text.DecimalFormat; // Imports DecimalFormat class for one way to round
public class lab3 {
public static void main(String[] args) {
String heading1 = "Hour", heading2 = "Distance Traveled";
int timeElapsed, hour, speed;
[Code] ....
And here's my output (Click on the image since it's pretty small):
javaIssues.png
Issue:
1) The Hours 2 and 3 aren't aligned to 1.
2) The 80 and 120 in Distance Traveled have 6 decimal places when it should not have decimals.
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Oct 10, 2014
Ex. If I type 5943, the program will say
mill = 5
hun = 9
ten = 4
uni = 3
get the picture I had to translate the decimal value names from a different language.
This is what I have tried...,
Java Code:
import java.util.Scanner;//Permite el uso de leer el teclado del usuario
public class DeterminarValorDecimal//Nombra el documento
{
public static void main(String [] args)//Podemos ver la clase
{
[Code].....
But what this does is I have to enter the single digits one by one. I want to be able to type the whole number. Is there a method that reads the length of the whole number and lets me classify each digit so I can do what I want to do?
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Feb 26, 2015
How i would convert this java code to display using the printf statement, with two decimal places to the right...here is the source code so far, but it has a few errors and needs to be reformated for printf
import java.util.Scanner; // scanner class
public class PROB3_CHAL15
{
public static void main(String[] args)
{
double checks =0,
totalfee =0,
fee = 10,
fee1 =.1,
fee2 = .08,
fee3 = .06,
fee4 = .04,
checkFee;
String input;
Scanner keyboard = new Scanner(System.in);
[code]...
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Oct 12, 2014
Is there anyway to format my input file "IF1.txt" into an excel/csv file, but with the content rearranged into a desired format? (all of this has to be done by a java program)
Here is the input file IFT.txt:
R1 : Integer,3 Food
R2 : Integer,3 ID
R3 : Integer,3 Temp
R4 : Integer,3 Weight
R5 : Integer,3 Age
R6 : Integer,3 Length
[code]...
Desired Output:
TIME Food ID Temp Weight Age Length
00:00:00.001 1 0 0 0 0 0
00:00:00.002 2 0 0 0 0 0
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Aug 3, 2014
I want to convert a date which can be of any date formats into yyyy-mm-dd format...My code is below.
String[] date_formats = {
"MM/dd/yyyy",
"dd/MM/yyyy"
,"dd-MM-yyyy",
};
String dateReceived = "13/11/2012";
for (String formatString : date_formats){
[Code] .....
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Mar 6, 2014
In the Employee's toString, you are using the NumberFormat class to format your hourly rate and weekly pay but you are supposed to use java string formatting only (%f). You should change those to use only string formatting - no use of NumberFormat.
package coursework;
import java.text.NumberFormat;
public class Employee {
private String firstName;
private String lastName;
private int employeeId;
private double hourlyRate;
public Timecard timeCard;
[Code] .....
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Mar 30, 2015
In Java® identifiers, you are allowed letters and numbers (also _ $£¢€ etc, but you should avoid them in normal identifiers). So you cannot have spaces. You cannot write public class Hello World because the javac tool will see World as a separate identifier and not understand what it means and will fail to compile the code. You must write public class HelloWorld instead. And because the class is labelled public you must call the source file Hello World. java. Since you can't have two classes with the same [fully‑qualified] name, you cannot write two public classes in the same source file.
“What about names of source files?” somebody will ask. Well, some file systems will permit spaces in file names; ext4 will and I suspect so will NTFS. Can you write file names with spaces in? You would have to have a different name of the class inside the file, because you can't have spaces, and you therefore cannot make the class public, but maybe you can write a package‑private class with a different name.
On ext4, you have to write out the name of the file and the shell will interpret the space as meaning there are two different file, so you have to escape the space.
campbell@campbellsComputer:~/java$ gedit My First Class.java
// My First Class.java
class Foo
{
public static void main(String... args)
{
System.out.println("Hello, World!");
}
}
campbell@campbellsComputer:~/java$ javac My First Class.java
campbell@campbellsComputer:~/java$ java Foo
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Jun 6, 2013
I have a piece of code as below for date format conversion.
DateFormat formatter1 ;
DateFormat formatter2 ;
Date date = new Date();
formatter1 = new SimpleDateFormat("yyyy-mm-dd");
date = formatter1.parse("1952-12-10");
System.out.println("before format, date is " + date);
formatter2 = new SimpleDateFormat("dd-MMM-yy");
formatter2.format(date);
System.out.println("after format, date is " +formatter2.format(date));I would like to change 1952-12-10 become 10-DEC-52, h
However, I am getting below output:
before format, date is Thu Jan 10 00:12:00 MYT 1952
after format, date is 10-Jan-52
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Jan 20, 2015
I am reading Excel data using java apache. I got format issue while reading double value such as 869.87929 (in excel) into 869.8792899999999 (in java).
I'm using following files to read excel data.
1. Schema.csv: SheetName,2-int-Double
2. File.xls:
col1 | col2
123 | 869.87929
Sample code:
if(type.equals("Double")){
String str = content[i-1];
//System.out.println(str);
BigDecimal d = new BigDecimal(str);
listObjects.add(d);
}
Note: type from schema.csv & content [] value from file.xls
If I print **str**, it shows value as 869.8792899999999.
But i need to get **str** value as 869.87929. How can I get it?
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Oct 17, 2014
Well I want to generate a license key for my software product. I'm aware of Google's Guava Libraries for generating alpha numeric license keys. But I'm thinking it to do in a different way without using any such libraries or specifically guava libraries. Till now this is my plan that,
1. Get a MAC ID / IP Address of the system in which the application will be installed and ready for it's first use.
2. Store that MAC ID in a UNCOMMON File format in client's PC only.
3. And what should be the next step.?
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Jun 15, 2014
I need to copy my neatbean code to word, (school stuff) now I know this is possible, cause I see it on internet often.
I tryed copying it to notepad++ and then to word... wont work the code will still all black.
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Mar 30, 2014
I have text file of this form:
0file:/home/lenovo/mallet/cleantweet/242874110.240622335890878130.1593492469451548700.130861040068201270.1129582267689684590.0868854788292128480.
0807757885763000940.078431372549019660.0604575163398692850.02926967888604717320.020389315146348393
1file:/home/lenovo/mallet/cleantweet
[Code] ....
Am i going in correct way?
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May 22, 2012
In my project i am facing an problem, The My SQL Data base will accept the date format of yyyy/mm/dd only as "Date" data type but in my program i wants to use dd/mm/yyyy format. (i have this same format now) that's why I am unable to insert / retrieve it..
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