returning doubles with 2 decimals JAVA

Ads
 

returning doubles with 2 decimals JAVA

Hi all. I'm writing a program where users input the cost of an item (in the constructor), so for example,

Item (string name, double cost, int qty) { ... }

I have a method

public double getCost() {
...
}

And I want it to return the cost. I tried using DecimalFormat, but I was told that it doesn't change the number itself. I need to return a Double, not a String!!

So when my client queries:

item.getCost()

They are give a double in return, example,

3.00

I tried this, but it didn't work:

DecimalFormat df = new DecimalFormat("#0.00");
String itemCost = (df.format(cost));
cost = Double.parseDouble(itemCost);
return cost;
}

It needs to return a string but I need it to return a double. Help please.

View Answers

Ads









Related Tutorials/Questions & Answers:
returning doubles with 2 decimals JAVA
returning doubles with 2 decimals JAVA  Hi all. I'm writing a program where users input the cost of an item (in the constructor), so for example, Item (string name, double cost, int qty) { ... } I have a method public double
Create an array of 5 doubles...
Create an array of 5 doubles...  Part one In a Java program, create an array of 5 doubles. Have the user input values into these array items inside a loop using JOptionPane. Using the loop, calculate the sum and average of the 5
Advertisements
java code 1 of 2
java code 1 of 2  Create a washing machine class with methods as switchOn, acceptClothes, acceptDetergent, switchOff. acceptClothes accepts the noofClothes as argument & returns the noofClothes   Hi Friend, Visit
Moire Pattern 2 Java
Moire Pattern 2 Java   textWhat you are seeing in the screenshot...; g2.setColor(Color.black);g2.fillOval(centerX, centerY - ovalWidth / 2, 300, ovalWidth... - ovalWidth / 2, 300, ovalWidth);g2.rotate(Math.toRadians(15),centerX,centerY
java code 1 of 2
java code 1 of 2  Create a washing machine class with methods as switchOn, acceptClothes, acceptDetergent, switchOff. acceptClothes accepts the noofClothes as argument & returns the noofClothes   Hi Friend, Try
Java Loop 2 - Java Beginners
Java Loop 2  WAP to print d following patter wid d help of ne loop possible
GUI 2 - Java Beginners
GUI 2  How can I modify this code? Please give me a GUI... world and like it alot. I was wondering where can I go to learn more about java and C++.  Hi You need not worry of where to go and learn about java
Java 2 micro editionJ
Java 2 micro editionJ  Hello, i am using JCreator, for writing my J2ME program, after building the program, it keeps on given me the following errors: package javax.microedition.midlet does not exist package
task 2 - Java Beginners
task 2  Write a time server that follows the time protocol outlined in RFC 868. When a client connects, the server sends a 4-byte, big-endian, unsigned integer specifying the number of seconds that have passed since 12:00 A.M.
que 2 - Java Beginners
que 2  WAP to input a string & print out the text withthe uppercase & lowercase letters reversed,but all other characters should remain the same. eg: input:WelComE TO School output:wELcOMe to sCHOOL  Hi Friend
Java 2 SDK, Standard Edition,
Java 2 SDK, Standard Edition,  Once I have the Java 2 SDK, Standard Edition, from Sun, what else do I need to connect to a database
OOP with Java 2 - Java Beginners
OOP with Java 2  Define a class called BogEntry that could be used to store an entry for a Web log. The class should have member variables to store the poster's username, text of entry, and the date of the entry using the Date
Java 2 Micro Edition - MobileApplications
Java 2 Micro Edition  I meet difficulties to do my final project using J2me.It's about train ticket booking in mobile.Pls help on how to do this source code using j2me.Thank You
Java 2 Micro Edition - MobileApplications
Java 2 Micro Edition  I meet difficulties to do my final project using J2me.It's about train ticket booking in mobile.Pls help on how to do this source code using j2me.Thank You
java 2 d array program
java 2 d array program  write a program 2-d matrix addition through...[][] A = new int[2][2]; int[][] B = new int[2][2]; int[][] C = new int[2][2...]+" "); } } System.out.println(); System.out.println("Sum of 2 matrices,Matrix C
executing java program with 2 classes
executing java program with 2 classes  how to run a program of java containing more than one class....ex of program is given below.... class C...); } }   Executing java program with 2 classes save the file with D.java
object 2 string - Java Beginners
object 2 string  hi sir,how to convert object to string and how 2 compare object with null value to string with null value plz provide a program 4 this sir,plzzzzzzzzz
returning a value from Threads
returning a value from Threads  Hello I have worker pattern that uses ExecutorService to schedule Thread execution but getting stuck at some point when returning a value using Future.I have code snippet below: ExecutorService
StringTokenizer not returning proper result
StringTokenizer not returning proper result  I have this code... System.out.print("Enter the stack integers side by side with a space in between: "); StringTokenizer st=new StringTokenizer(br.readLine()); int a[]=new int[9000
arrays part 2 - Java Beginners
arrays part 2  Question 2: Useful Array Algorithms and Operations (5 marks) Upgrade the program in Question 1 so that the program includes: ? A static method search() that: o Has a parameter of integer array and another
readline Error 2 - Java Beginners
readline Error 2  Hi sir, can you look again please. The error is hard to notice, but if you execute the code, 1. enter a string the first input request (eg hello world), 2. ENTER 3a. ENTER n for the next input request
WAP in java to print the series 1*2*3
WAP in java to print the series 1*2*3  WAP in java to print the series 123
java 2 - Java Server Faces Questions
java 2  1) a) Write a pseudo code algorithm to pick the 1st element as a pivot and a partitioning array according to the instructions given... and partitioning) to Java. It should be able to execute any set of data. Note:- You should
how to compare 2 arrays using java?
how to compare 2 arrays using java?  hi can anyone give me the information regarding comparision of arrays.   Java Compare Arrays
java bits 2 - Java Interview Questions
java bits 2  Which two classes correctly implement both the java.lang.Runnable and the java.lang.Clonable interfaces? (Choose two.) A. public class Session implements Runnable, Clonable { public void run(); public Object
adding of 2 bite's - Java Interview Questions
adding of 2 bite's  Java Adding of 2 bite's  this through compilation failedhere a+b returns an integer .and u try to assign an integer value to byte.(i.e. narrowing or downcasting)In case of narrowing u have
concatinate 2 strings - Java Interview Questions
concatinate 2 strings   Write a program to concatenate two strings ?  Hi Friend, Please visit the following link: http://www.roseindia.net/java/beginners/CombinString.shtml Thanks
round double to 2 decimal places java
round double to 2 decimal places java  Hi, How to round double to 2 decimal places java? Thanks   Hi, BigDecimal class can be used...) { BigDecimal bd = new BigDecimal("203.56849"); bd = bd.setScale(2
Java Servlet - matching 2 databases - Java Beginners
Java Servlet - matching 2 databases  Dear Experts, I have 2 tables in a database, parents and memberparticulars resepectively. parents is the table that contains parents data. memberparticulars is the table that contains
Java Struts 2 Programmer
Java Struts 2 Programmer       Position Vacant: Java Struts 2 Programmer  Job... ID: Java Struts 2 Programmer
method returning null on JSP page.Plz HELP!!!
method returning null on JSP page.Plz HELP!!!  public String... it is returning null while the parameter values are successfully passed.while I am... to Java, so please help me as it could also because of some silly mistake. Thanks

Ads