1. What is the difference between double a = a + int b and int a += double b? stackoverflow.comWhy does: |
2. Why doesn't Java throw an Exception when dividing by 0.0? stackoverflow.comI have code to calculate the percentage difference between 2 numbers - |
3. Possible loss of precision / [type] cannot be dereferenced stackoverflow.comI have been looking around a lot but i simply can't find a nice solution to this... |
4. += int and double conversion stackoverflow.comPossible Duplicate: |
5. Java- Identifying ints and doubles stackoverflow.comI want to write a conditional statement, depending on whether a variable is an int or double, i.e |
6. Why does 1/0 give error but 1/0.0 returns "Inf"? stackoverflow.comI'm just curious about this:
If Java calculate Exception in thread "main" java.lang.ArithmeticException: / by zero at Foo.main(Foo.java:3)But when ... |
7. How to convert Double to int directly? stackoverflow.comMay be this is silly question. I want to get rid of the fractional part of the |
8. Java int vs. Double stackoverflow.com |
9. Java - Converting hours(in double) to minutes(integer) and vice versa stackoverflow.comI need the correct formula that will convert hours to minutes and vice versa. I have written a code, but it doesn't seem to work as expected. For eg: If I have hours=8.16, ... |
10. Is checking a double for equality ever safe? java stackoverflow.comI have the following code: |
11. double arithmetic and equality in Java stackoverflow.comHere's an oddity (to me, at least). This routine prints true: |
12. (double,int) cannot be applied to (double) stackoverflow.comBeen wracking my brain for hours trying to figure this out. i have the main method which is: |
13. The method Loan(double, int, double) is undefined for the type Loan? stackoverflow.comCan anyone help me see where I am missing this? I am trying to get the loan class called to the main method and check to see if my exception handling ... |
14. (2+4) 6 byte integer to double bytes.comAlwaysANovice There is a DLL on a Windows (Intel, 32-bit) server that contains a functions called EntConvertInt which takes a Int16 and Int32 arguments and returns a double. I want to ... |
15. int, BigInt, double coderanch.comIf you're writing a Fraction class, then it will really help you to think this question through, because it will be fundamental to how your class works. First, define your requirements for a "numerator" and a "denominator." Will these be whole numbers only? Or might they be floating point? What range will they require? Then list the basic characteristics for each ... |
16. Converting a Double to an Int coderanch.comI'm not really sure whether you're talking about objects (Double and Integer) or primitive datatypes (double and int). But here's a short program which illustrates both. class DoubleTrouble{ public static void main (String args[]) { double d = 1.2345; int i = (int) d; Double d2 = new Double(d); Integer i2 = new Integer(d2.intValue()); System.out.println("i =" +i); System.out.println("d = " +d); ... |
17. Changing a double to an int coderanch.com |
18. How to read an int or double? coderanch.com |
19. Converting double to int. coderanch.comHi! I`ve got an assignment wich causes me to find out if a number is a decimal or not, in short. So I+m thinkingof converting a double number to integer and see if the number changes. But I can`t get the conversion right, what am I doing wrong here ? class Oppg2 { public static void main(String[] args) { double number ... |
20. converting double into integer coderanch.com |
21. convert int ,double to string coderanch.com/* to String g from double d */ /* 2 decimal places, locale-sensitive. */ java.text.DecimalFormat df2 = new java.text.DecimalFormat("###,##0.00"); g = df2.format(d); /* or exponential scientific format, locale-sensitive. */ java.text.DecimalFormat de = new java.text.DecimalFormat("0.0000000000E00"); g = de.format(d); /* or best for readability, no loss of precision, locale-insensitive */ g = Double.toString(d); /* or best for maintainability, no loss of precision, locale-insensitive ... |
22. converting a double to an int coderanch.comThat's what I get for quickly throwing up an answer w/out double-checking with the documentation. My bad: there is no "trunc()" method. If you want to truncate a "double" value there are a couple of options: double dd1 = 1234.5678; int ii1 = (int)dd1; double dd2 = (int)dd1; double dd3 = (int)(dd1 * 100) / 100.0; System.out.println("DD1: " + dd1); System.out.println("II1: ... |
23. Changing from Double to Int coderanch.comHi I have an array of double values and i am then using this array within a switch statement... switch(timevaluesarray(iCount) { ........... } When I compile the code I get the error 'loss of precision', where a double is found but and int is required. Is there a simple line of code that can change the values in the array from ... |
24. Integer to double coderanch.comprivate Integer antalTim; private double timLon; public Integer getAntalTim() { return antalTim; } public void setAntalTim(Integer newAntalTim) { antalTim = newAntalTim; } public double getTimLon() { return timLon; } public void setTimLon(double newTimLon) { timLon = newTimLon; } public double anstalldlon() { double tal = getAntalTim(); return (tal * (this.getTimLon())); } so I got this mess: Error(28,19): incompatible types; found: java.lang.Integer, ... |
25. double to Int coderanch.com |
26. why use int over double? coderanch.comi am using the book book beginning java 2. and there is a example showing how the math class works the program calculates the radius of a circle in feet and inches given that the area is 100 square feet: public class MathCalc { public static void main(String[]args) { double radius = 0.0; double circlearea= 0.0; int feet = 0; int ... |
27. converting double to int? coderanch.comHow do i convert a double number, which I'm sure to be a whole number (due to a rounding operator i have used) back to an integer? Is this possible? I keep getting a 'possible loss of precision error'. I understand why this may be the case in other circumstances but I know this wouldn't hapen in my case. |
28. need help with double and integer code coderanch.comthis is the same program as earlier -prof went over it in class, since everyone was having trouble. Now he wants it to work accurately. In other words, in case 2 if an Integer is entered than display the correct message, if is not an integer entered, then display an error message. Same as with case 3 and the double. It ... |
29. int and double get methods coderanch.comHi everyone, I have written the code to get Strings out of an arraylist, but I have encountered problems with int and double, clearly it is not done in the same way, below I have added an eg of the String get methods I have added, and work (phew!). Any help on how to write a similar method ot return a ... |
30. Type mismatch:Cannot convert from double to int. coderanch.comHello to All, This is another newbie question. I have been working this type of error for the last couple of days and have been getting nowhere so it is time to ask you, the adoring wonders of the Java world. How do I work doubles and chars and ints and strings together? Here is one program that has not even ... |
31. Method that changes and Int to a Double coderanch.comHello to All, I am working the programming book "Think Like a Computer Scientist in Java" and am on page 138 with this problem. I like the Author's manner of teaching as well as his idea that the title is a joke of sorts. (Agreed this latter could spark blog wars about the current state of "Computer Scientists coming out of ... |
32. doubt in double and Integer coderanch.comHi All this is sivakumar. Actually i did one small program that same method with different parameter. this is my program class example { public void something(Integer ival) { System.out.println("Integer:" + ival); } public void something(double ival) { System.out.println("Double:" + ival); } public static void main(String arg[]) { example ex = new example(); ex.something(1); // here i passed int value to ... |
33. Problem with doubles equalling ints coderanch.comHi there, I was trying to answer one of the algorithm problems on TopCoder whereby a message is displayed only if the percentage of seconds elapsed is exactly10.00000%, 11.000000% etc. You have to parse a time string and convert it to seconds and then see how many messages will be displayed in total. 0% and 100% will never be displayed. My ... |
34. Incompatible operand types int and double[][] java-forums.orgHello I just started java and try to do a programm wich is able to give me a fast solution of the Gaus System. (If anyone knows ;-) ) But I got a problem: import java.util.Scanner; public class Info { /** * @param args */ public static void main(String[] args) { int a; double b [][] = new double [4][4]; int ... |
35. How to convert a double into a int? java-forums.org |
36. Question about my code (double, int) java-forums.orgWell the basic of my program would be to insert coins (pennies,dimes, nickles, and quarters) then print out the total in $ format. The problem is when ever I tied added some number like 3 nickels to the bank (total) then print out the total (getContents), I would get result such as 0.15000000000000002 instead of just 0.15(3*0.05). Another example would be ... |
37. Adding an integer to a double? java-forums.orgint y = 3; double z= y+4.0; Will the right hand side of the bottom line return a double, or will this be an error? I know y is an integer, but I believe I heard something like if you if you write double z=5, then you'll get 5.0 as an output, but I am not sure. Basically will the code ... |
38. Convert an objects data from int to double java-forums.org |
39. convert integer to double java-forums.orgHi guys, I'm trying to get the average of two integer values in double. If I enter 7 and 8 then I get only 7 as the average not 7.5. I tried double average = Double.parseDouble( (firstNumber + secondNumber) /2 ); but I get a compile error. below code is compiled fine but I cant get the average in double. Appreciate ... |
40. how can check input is double or integer? java-forums.orgThere may be a better way of doing this but you could try something like this. Convert the input to a string if it isn't already. Then you could search through each character. If there is a decimal point then it is a double value else it is an integer. Hope this helps, Regards Serb. |
41. Handling Money, int, double,...? java-forums.orgUsing a floating point number to represent money can lead to rounding errors. You can store the amount as cents in an int. Or you can create your own Cash class that has two instance variables: dollars and cents. The advantage of writing your own class is that you can add as many helper methods as you need. |
42. kinda urgent please help pass strings to doubles and strings to ints forums.oracle.com |
43. doesnt work with double works with int forums.oracle.comOne of the issues I see with your code is you are using Double where you should use double. There's a BIG difference between the two. Also as noted above, you are not initializing your variables. There are other problems as well, but these are major ones that stand out. double is a primitive, like int, while Double is an Object ... |
44. How to pass double() and int(); values to a method? forums.oracle.com |
45. Converting double to int forums.oracle.com |
46. int * double ? forums.oracle.comthis has to do with precision. under the covers, either the multiplication needs to be done int*int or double*double, so either the int needs converted to a double or the double to an int. in first case no precision is lost, but in the second the double will lose anything after the decimal. Therefore, in order to keep all the precision, ... |
47. Int and Double help forums.oracle.com3. Compute the range of data values (by finding the maximum and the minimum and taking their difference); then compute the width of each equally-sized interval (by dividing the whole range by the number of intervals specified by the user); finally, compute the number of data numbers falling in each interval and store these frequencies in an array of integers; |
48. how do I convert a Double value to an Integer value forums.oracle.com |
49. Return double or int ! forums.oracle.com |
50. return the ceiling value of a double as an int forums.oracle.com |
51. Strange behaviour of int and double results forums.oracle.comHi, I am rather new to Java and would like some help with a small applet that I have written. In the code I calculate a result and store it in a variable of type double. The value of interest varies between 0 and 1. double zeta; etc ... ... zeta = damping(I, Rn, velocity_mph); //my own function I am interested ... |
52. How to convert a double to integer ? forums.oracle.com |
53. Being able to use a double and an int in a equation forums.oracle.comDid a little searching for the answer before asking both in the api and here on the forums, as well as my old programs but just can't seem to find the answer. I need to be able to use an int and a double in a equation where the answer should be an int. Here is an example of exactly what ... |
54. Double to Integer conversion forums.oracle.comNeed your help, please. For the precision, I made the key variables type of "double". However, when I complete the calculation, I wanted to get the integer portion only by truncating below the decimal point. I tried to use (int) () command. However, compiler complains that I will loose the precision and does not compile. I wanted to loose by truncation...... ... |
55. Is there any way to randomize ints or doubles? forums.oracle.comI'm not sure if this is possible but let's say I decide to choose 5 numbers. (e.g. 1, 2, 3, 4, 5) Is there any way to change these numbers and make them random numbers? I know this might sound strange but I'm thinking about making a program: A online lottery service, where the numbers are randomized every time a lottery ... |
56. how to multiply int by double forums.oracle.com |
57. convert double to int ,,, 2 ways used but !! forums.oracle.comhi ; I'm currently developing a small program for currency conversion, which will ask the amount in pounds then converts it to dollars with least number of notes and coins used. most of the program is complete but im having a slight problem with converting the amount in Cent which is a double (amountCentD) to int (amountCentI) so i get rounded ... |
58. Need help displaying double as integer. forums.oracle.comI need help with varibale pay. when executed it shows numbers with one decimal place. need to take that off. Any help is appreciated. /* File: penny.java Hrach Beglaryan January 15, 2009 */ import java.text.DecimalFormat; // This was a failure import java.util.Scanner; public class penny { public static void main(String[] args) { Scanner kb = new Scanner(System.in); DecimalFormat formatter = new ... |
59. making an int to a double forums.oracle.com |
60. Double to Int forums.oracle.com |
61. double to int to String forums.oracle.com |
62. converting string to int and double forums.oracle.comHallo everyone, I know how I can convert string to int and double via parsers but I have another problem. I am reading the values from a file which brings the daten like 1233,4456 for double values I need to round it till the 2 digits after comma for integer values I need to round it and write it like 1233 ... |
63. how to write a method that can return either int OR a double forums.oracle.comYou would return an object and check if it was of type Integer or Double. Don't do this. This is a bad practice. Your methods should have well-defined return types and you will write yourself into a corner doing things like this, and anyone who ever has to maintain your code will curse your name and possibly track you down and ... |
64. Class which can work with int or double forums.oracle.com |
65. Problem using Double and Integer forums.oracle.comHi I have a problem in this code: public static Integer convertToInteger(Double value) { Integer newValue=new Double(value*100).intValue(); return newValue; } If value is 4.27 the function return 426, but if I put other value like 3.27 => 327, 44,27=>4427, work fine If you see the result of new Double(value*100).intValue(), you get 426.999999994. Any Idea why I have this problem??? By the ... |
66. Problem with changing double to int! forums.oracle.com |
67. get integer part of a double type value. forums.oracle.com |
68. g2.drawString, double int forums.oracle.com |
69. Check if double is an Integer forums.oracle.com |
70. I need help converting int to double forums.oracle.comYou place it after you have given your int a value (BTW this is just an example which you have to adapt to your needs). However, are you really trying to convert 1 to 1.0 or are you trying to get your input as 1.3 or 3.674? If you are trying to get input as double then Cap'ns response above is ... |
71. int and double forums.oracle.com |
72. double vs int forums.oracle.comThese are two questions and I hope that you already know the answer of the first - in the math sense it is the difference between integer and real numbers (subsets of these sets). As far as the second question goes - cast what the method returns to an int. int a = (int)box.getWidth(); The compiler cannot do it implicitly because ... |
73. Integer or Double? forums.oracle.comPersonally I preffer to keep money values as long (number of pence/cents), even though this means a bit of mucking about to convert to String. (Most of my projects have a Money class). double values make everything messy, and accumulate rounding errors if you don't keep an eye on them. Then it's trivial to break your amount into dollars and cents. ... |
74. Convert int[][] to double[][] forums.oracle.comYou can do this operations only If You have link based arrays. But in your case, when arrays based on primitive types, you cannot do this. Because, when you create int[][] array jvm creates array where each cell has fixed (4 bytes) size. And if you want to convert you array to double[][] jvm will need to create new double[][] array ... |