1. What is the purpose of long, double, byte, char in Java? stackoverflow.comSo I'm learning java, and I have a question. It seems that the types |
2. How to format a variable of double type stackoverflow.comI have a variable of double type representing a value of about 34.323423423123456. I'd like to format it to have only two decimal places (e.g. 34.32), rounded properly; e.g. 2.229934345 would ... |
3. Double variable condition checking for leass than or equal? stackoverflow.comHow the less than or equal to condition checking performed on a Double variable. I have two variable first, second. |
4. Checking if variable is Long or Double stackoverflow.comIs there any way to check if the varible is Double or Long before doing anything with it? Sometimes the Objects are Double and some they are Long. How can I check ... |
5. How can I represent smaller Double variables with exponents in java stackoverflow.comFor example: double a = 2000; System.out.println(a); Prints out 2000.0, whereas I would like to print 2E3. With a double of 2 I desire 2E0 etc. I know that it begins to print like this ... |
6. Java Double variable refuses to go negative after subtraction stackoverflow.com |
7. A double local variable is printed as 0.0 instead of the set value stackoverflow.comI'm having trouble with printing out the variable |
8. Lost precision in Double variable coderanch.comHello all, Thank you for taking the time to read my post I was wondering if any of you might have come across something like this before. I'm trying to add key value pairs into a SortedMap, where the key is a Double. The key is usually a number like 0.01042 which has 6 digit precision. SortedMap newMap = new TreeMap(); ... |
9. Problem while storing large value in double variable coderanch.com |
10. multiplication using double type variables coderanch.comWelcome to the Ranch. The reason you don't get exactly the number is the same as why you can't write one-third exactly in decimal. Try it. Get a very sharp pencil and write and don't stop until you have got enough threes to give the exact answer. No fractional arithmetic can be represented exactly in a 123.45 format unless the factors ... |
11. Double Variable Class coderanch.comHow do you create a variable class to hold double values? My String works as I want it to, but I can't figure out how to instance all the double values. class Item { public static void main(String args[]) { //These are the items values which I want to call itemCosts Double itemCoffee = new Double("1.00"); //Coffe is $1.00 Double itemWater ... |
12. Multiplication Issue when Variables as Double Datatype coderanch.comN.Senthil Kumar wrote:May i know why the Value have 3 at last in the Output ----> 0.04300000000000000 3. Not every decimal number (which humans prefer) can be exactly converted to a binary number (which computers prefer). So conversions back and forth between number systems tend to produce small errors. Also the number of bits used to represent numbers internally in the ... |
13. difference between two double variables coderanch.comIt's a very well known issue with floating point numbers -- the precision of floating point, for certain values, do not represent very well in Base 2, even though they are obvious in Base 10. This is an issue related to the IEEE floating point standard, which is the standard used by Java, and practically every language and processor used today. ... |
14. double variable and place values coderanch.comis there a way to restrict the place value of a double variable? I'm writing a change counting program, and I'm getting a number out to the bajillionth place. For reference, here is the code /* This program counts change based on inputs from the user. It asks for change in decending monetary value. */ public class ChangeCount { public static ... |
15. Alternating Transparency Based on Double Variable java-forums.org |
16. Double Variable Class java-forums.orgclass Item { public static void main(String args[]) { //These are the items values which I want to call itemCosts Double itemCoffee = new Double("1.00"); //Coffe is $1.00 Double itemWater = new Double("2.00"); // Water is $2.00 Double itemMilk = new Double("1.50"); // Milk is $1.50 Double itemBagel = new Double("1.25"); // Bagel is $1.25 Double itemDonut = new Double("0.75"); //Donut ... |
17. My double variable adds itself 0.032/33 and 0.064/65 java-forums.orgHello there. I'm having such an strange problem with a double variable which increases 0.032 and 0.064 by itself. Each time I click on a JButton, the variable has to increase in 0.01, starting on 0. The thing is that after some clicks, it increases itself 0.032 or 0.064. It's ever at the same number of clicks; for example, when the ... |
18. how can i format a double variable to currrency java-forums.org |
19. here is Double bouble sort. is it ok to variable shift is no initialization forums.oracle.comin case of {1, 2, 3, 4, 5, 6, 7, 8, 9, 10} inputs, variable shift is cause of Error. in FlowChart, is variable shift to OK without initialization? adds, The Sentence of " Data of 10th to be ordered by escending" is means "Data must be no ordered"? in JAVA, static int member has to auto initialize. is FlowChart possible ... |
20. how to roundoff addition of two double variables forums.oracle.com |
21. Java and a double type variable forums.oracle.com |
22. Error when adding 0.1 to a double variable forums.oracle.comDon't be silly. It's not about arguing, or winning, it's about what's the right answer. Blaming IEEE.754 or indeed floating point for this problem is just as wrong as blaming Java. The problem is fractional representations, and it happens in other contexts than floating-point, e.g. multi-precision integers with fractions (BigDecimal for example). You can't precisely translate all fractions in radix A ... |
23. Comparing a Large Double Variable fails forums.oracle.comHi, I have a double variable and want to compare its value with the 2 to the power of 63. The sample code below works fine when I set var1 to 100.0, but it incorrectly prints "false" when I set var1 to Math.pow(2.0,63.0)-1.0 (I get . double var1 = 100.0; if (var1 < Math.pow(2.0,63.0)){ System.out.println("true"); } else{ System.out.println("false"); } |
24. sending a exact double value not d variable forums.oracle.com} } DefaultCategoryDataset dataset = new DefaultCategoryDataset(); dataset.setValue(10.98, "Jhat", "abo terminals"); dataset.setValue(79.45, "Marks", "Shamas Mosque"); dataset.setValue(46.28, "Marks", "Zener"); dataset.setValue(9.78, "Marks", "TNI"); dataset.setValue(60.67, "Marks", "WAFA"); JFreeChart chart = ChartFactory.createBarChart("BarChart from xml datas", "Datas", "Avalibility", dataset, PlotOrientation.VERTICAL, false, true, false); chart.setBackgroundPaint(Color.WHITE); chart.getTitle().setPaint(Color.BLACK); CategoryPlot p = chart.getCategoryPlot(); p.setRangeGridlinePaint(Color.red); ChartFrame frame1 = new ChartFrame("Bar Chart", chart); frame1.setVisible(true); frame1.setSize(800, 600); } } here i need the ... |
25. How can I configure my Double variables to a set length? forums.oracle.comThanks for all your answers. I appreciate it, "0000.00" worked like a charm. Sorry if it seemed obvious in the DecimalFormat documentation. I scanned through and couldn't make sense of it. I probably should have looked closer, but then again my creator's helpfile on the subject was a LOT less detailed than the Sun one you recommended to me. I'll remember ... |
26. Printf() : Variable precision field for a double forums.oracle.comHello, First of all, thank you for reading my post and trying to help me, I really appreciate it. My issue is that I am trying to print a double but the precision is being change by the user while the program is running. Printf() in C/C++ allows an asterisk to put a variable width or precision. It is unclear on ... |
27. How to take a negative hex double number into a Double variable? forums.oracle.com |
28. addition of double variables forums.oracle.comWelcome to floating point arithmetic. This is a good time to learn that doubles and all floating point numbers are usually not exact representations of what you think they should be. This is not a Java issue, but a general floating point issue. You should read a good tutorial on this subject. Here's one: http://www.ibm.com/developerworks/java/library/j-jtp0114/ Look in particular at the section ... |
29. Need to format a double variable forums.oracle.comHi, I am very new to Java programming. I have written a simple program that will read the name of an employee, the hourly rate, and the number of hours worked. The hourly rate and hours worked are all stored as doubles. I want to output the amount to be paid as USD with a $ and 2 decimal places. What ... |