1. String to Int in java  Likely bad data, need to avoid exceptions stackoverflow.comSeeing as Java doesn't have nullable types, nor does it have a TryParse(), how do you handle input validation without throwing an exceptions? The usual way:

2. Integer with leading zeroes stackoverflow.comwhen i write
i get
however
returns
why it works that way?

3. Find out number of bits needed to represent a positive integer in binary? stackoverflow.comThis is probably pretty basic, but to save me an hour or so of grief can anyone tell me how you can work out the number of bits required to represent ... 
4. Large Numbers in Java stackoverflow.comHow would i go about doing calculations with extremely large numbers in Java? i have tried long but that maxes out at 9223372036854775807, and when using an integer it does not ... 
5. Way to get number of digits in an int? stackoverflow.comIs there a neater way for getting the length of an int as this?

6. How to do an Integer.parseInt() for a decimal number? stackoverflow.comThe Java code is as follows:
However this is throwing a NumberFormatException... What could be going wrong?

7. hex to int number format exception in java stackoverflow.comI am getting a number format exception when trying to do it
if I reduce one of the digits in the hex number it converts but not otherwise. why ... 
8. How to round *down* integers in Java? stackoverflow.comI'd like to round integers down to their nearest 1000 in Java. So for example:

9. Check if int is between two numbers stackoverflow.comWhy can't do you this if you try to find out whether an int is between to numbers:
Instead of it, you'll have to do
which seems ... 
10. How might I count the number of int members defined for a Java class? stackoverflow.comI have a class that stores a large number of

11. In java is it possible to pack a integer number that is expected not to be negative & be final (not overflow) into a short? stackoverflow.com"Unsigned int" into a short and back. Is this possible? How to do it if so? Grrrr. I forgot how signed numbers are implemented. The question makes no sense. Thanks anyway. I ... 
12. Convert integer to equivalent number of blank spaces stackoverflow.comI was wondering what the easiest way is to convert an integer to the equivalent number of blank spaces. I need it for the spaces between nodes when printing a binary ... 
13. Checking if an int is prime more efficiently stackoverflow.comI recently was part of a small java programming competition at my school. My partner and I have just finished our first pure oop class and most of the questions were ... 
14. how to work with other base numbers in java? stackoverflow.comGuys if the int c=10001; which is a binary value.If i want to process it like multiplying it by 10 how to do that? 
15. Number for each enum item? stackoverflow.comIs it possible to define something like this in java? C# code:

16. How to get the separate digits of an int number? stackoverflow.comI have numbers like 1100, 1002, 1022 etc. I would like to have the individual digits, for example for the first number 1100 I want to have 1, 1, 0, 0. How ... 
17. What's the right way to represent phone numbers? stackoverflow.comI'm having trouble representing a mobile number in one of my applications. I was wondering if there is an Integer class that will allow you to store such a number starting with ... 
18. How to convert a string of numbers into integers? stackoverflow.comI want to convert a string of 5 numbers separated by commas into integers and store them into an array.

19. Random number generator that generates integers for Java stackoverflow.comI want to generate some random integers in Java, but this according to some distribution laws. More specific:

20. JXL GetFormula() returns formula to string OK, but with .0 to every integers numbers stackoverflow.comI'm using this piece of code to get a Cell formula with JXL :

21. How can I convert an int number from decimal to binary? stackoverflow.comHow can I convert an int number from decimal to binary . for example int x=10; radix 10 how can i make another integer has the binary representation of x such as: int y=1010 radix ... 
22. How can I do operations on big numbers that can't be stored in one variable stackoverflow.comIn Java, I would like to be able to do operations on really big integers (that can't be stored in a long), how can I do that? What is the best way ... 
23. Does Java have mutable types for Integer, Float, Double, Long? stackoverflow.comI am in a situation where I want to use mutable versions of things like Integer. Do I have to use these classes (below) or does Java have something built in? 
24. Java Round up Any Number stackoverflow.comI cant seem to find the answer im looking for regarding a simple question. How to round up any number to the nearest int? I.e. whether the number is 0.2, 0.7, 0.2222, 0.4324, ... 
25. Why is Java offended by my use of Long.parseLong(String s, int radix) with this long binary number? stackoverflow.comI have the following code:
Why does Java think that this is not a valid

26. Why does this not result in 1000? stackoverflow.comPossible Duplicate:
The result should be 1000 but its not. Why does ... 
27. Java  Convert number to string stackoverflow.comGiven a number:
Which would be the "best" way to convert this to a string:
Thanks in advance!
^{ I have tried searching (googling) for an answer but no ...} 
28. Converting a character to an integer if the character is already a number in java stackoverflow.comI'm trying to read a string's character to get the numeric value. String cardNumber = in.next();

29. Very Large Numbers in Java Without using java.math.BigInteger stackoverflow.comHow would I go about doing arithmetic, +  / * % !, with arbitrarily large integers without using java.math.BigInteger? For instance, the factorial of 90 returns 0 in Java. I would ... 
30. Integer.parseInt() doesn't parse large negative numbers stackoverflow.comWhy is NumberFormatException is thrown when i try

31. Checking if a number is an Integer in java stackoverflow.comIs there any method or quick way to check whether a number is an Integer ( belongs to Z field) in java I thought of maybe subtracting it from the rounded number, ... 
32. Convert a raw negative rgb int value back to a 3 number rgb value stackoverflow.comOk so I'm working on a program that takes in an image, isolates a block of pixels into an array, and then gets each individual rgb value for each pixel in ... 
33. Java long Numbers Help stackoverflow.comSo at the top of my code I declared the variable

34. Long vs Integer, long vs int, what to use and when? stackoverflow.comSometimes I see API's using 
35. How do I truncate a java integer to fit/exand to a given number of bytes? stackoverflow.comI am designing an archive format(Just for fun) in Java using this template

36. Integer (number) to String stackoverflow.comHere is my simple question
We can convert 
37. Given a number n and two integers p1,p2 determine if the bits in position p1 and p2 are the same or not. Positions p1,p2 and 1 based stackoverflow.comI've been doing some little code quizes just to catch back up on my coding after graduating but this one got my stump. Here's the question: Given a number n and two ... 
38. Problem with adding sorted number Strings to a SortedSet in Java stackoverflow.comI created a my own SortedSet here is the code for adding something to the array. (I know there are better and simpler ways to do this than an Array but ... 
39. Check for recurring numbers in a int[] Java stackoverflow.comI want to be able to tell if a any number in an int[] appears 3 or more times? How can I do this? Would be awesome to have method

40. What exactly does Double mean in java? stackoverflow.comI'm extremely new to Java and just wanted to confirm what 
41. How do I fix wrong numbers produced by integer overflow? stackoverflow.comI had a bug that caused an integer overflow, resulting in wrong (negative) timestamps being written to the database. The code is fixed already, but I want to fix the wrong ... 
42. How to convert string numbers into comma seperated integers in java? stackoverflow.comCan any one give me some predefined methods or user defined methods to convert string numbers(example : 123455) to comma separated integer value (example : 1,23,455). Thanks in advance, sathish 
43. Append two Integers, each representing a nibble, to a hexadec. number stackoverflow.comI write the bitstream for a JPEG Encoder, I'm facing this problem: I built Pairs for the AC Cosinus Coefficients (after Quantization) in an int[]array. Each Pair: (Number of Zeros/ Category of ... 
44. Number of digits and which digits it is in integer stackoverflow.comExample 
45. Display first n digits of a number in Java stackoverflow.comI am having difficulty of creating a method to display first n digits of a number when 'n' is determined by the user. For example, user inputs an integer '1234567' and ... 
46. String.valueOf(i) vs "" + i or i + "" stackoverflow.comI usually use 
47. multiplication of two ints overflowing to result in a negative number stackoverflow.comConsider this snippet from the Java language specification.
The output is
Why is the result ... 
48. Check if a number is a double or an int stackoverflow.comI am trying to beautify a program by displaying 1.2 if it is 1.2 and 1 if it is 1 problem is I have stored the numbers into the arraylist as ... 
49. How can I place numbers at the end of an int (not summing)? stackoverflow.comI'm busy with making an expression tree for school, I've already build the part in which the tree is being made and printing the result of the arithmetic expression also works. 
50. How to write Numeric Unsigned, four bytes integer using the Apache Commons libs? stackoverflow.comI have to write in a buffer some integer values. But in the API is specified that the number is Integer, Numeric Unsigned and must have at maximum 4 bytes . How ... 
51. Variables craziness, rounding number (int,double etc.) stackoverflow.comThis is mine code, not fully finished, and sorry for Polish language but it's easy to get it. http://pastebin.com/QPmVaPFv So, this is about vet, 4 variables are for price per visitor: 1. ... 
52. Getting the wrong number when converting from byte[] to int stackoverflow.comI am trying to convert an int to a byte[] and back again, but I think I am doing something wrong along the way. My code is basically:

53. Distinguishing integer numbers from if statements? bytes.com 
55. Problem with using selectionSort on number input, says cannot be applied to int coderanch.comHello everyone I am new here, so I hope I don't get a "fine" of 10 posts if this question is not proper for this forum anyway, here is my problem. I am new to java, thus still very confused on classes methods interfaces etc etc but trying to learn it all.. I have in one folder a selectionSort I wrote ... 
56. Need Help With returning some int numbers. coderanch.comI am doing a hw assignment and I am stuck. I have 3 files: RollingDice2(has the main method) PairOfDice Die So this is what my problem is it has to roll some dies and find some numbers so like how I have it now RollingDice rolls 2 dices and finds the sum but how the RollingDice gets it roll it must ... 
57. Java Convert Hexadecimal number into Integer coderanch.com 
58. Cast number with comma as Integer. coderanch.comYou should separate out how you STORE it from how you DISPLAY it. a number does not have commas in it. If you want to store something with commas in it, then you're not storing a number, you're storing a string. If you want to store a string, then don't consider it as a number. 
59. how to convert integer number to UBE4 (unsigned big endian 4) format go4expert.com 
60. Number of occurrences in a int[ ] javaforums.orgI'm having a little trouble as to taking two int []'s and if there are two elements that are the same, skipping over them. In the end I need the program to print out the elements that don't have any duplicates at all. For instance: int [] a = {4, 5, 5} int [] b = {6, 6, 3} The program ... 
61. how to convert String number to int javaforums.org 
62. Program to read integers until a specific number? javaforums.orgHello! I have a problem. I want to make a program that reads all the integers that are typed in and when a certain integer is typed in (lets say 0) it stops and then adds them all toghether. I was thinking of a while and for loop. And to place the integers to an array. But how do i add ... 
63. Help with iniitalize int variable without assigning a number? javaforums.org 
64. Help with initialize int variable without assigning a number? javaforums.orgHello! I wonder if it is possible to initialize a variable without giving it an value? The part of my program I'm having trouble with: Java Code: //*The program will ask for 10 ints, when 10 ints have been taken in from //input the software will print the 2 biggest and the 2 smallest int. I've got it //to work if ... 
65. Extracting individual numbers from a long integer javaforums.orgpublic class DigitExtractor { private static int intNumber; public DigitExtractor(int anInteger) { intNumber = anInteger; String number = String.valueOf(intNumber); char charNumber = number.charAt(4); int x = number.charAt(3); int x1 = number.charAt(2); int x2 = number.charAt(1); int x3 = number.charAt(0); } public static String nextDigit() { I dont understand if I return one number is only gives me that number. Even if ... 
66. converting a given positive integer m to a positional number system in base n javaforums.orgWrite a Java method to convert a given positive integer m to a positional number system in base n (n is in between 2 and 36). The result is a string consisting of digits and lowercase latin letters if needed. public static String toSysString (int m, int n) Example: toSysString (14, 4) == "32" 
67. What is the correct way of getting a random Integer number? forums.oracle.comIt should work pretty fast. How do you know that it's slow? Do you use a profiler? Also, do you try to create a new rand object on each loop of the for loop, or do you create one rand object before the for loop and use the same object inside of the loop? Please do the latter, not the former. ... 
68. Method to convert a rational number from 'int' to 'Double'. forums.oracle.comclass Rational{ int num; int denom; int swap; public Rational(){ this.num = 0; this.denom = 0; } public Rational(int num, int denom){ this.num = num; this.denom = denom; } public Rational (int swap){ this.swap = swap; } public static void printRational (Rational r){ System.out.println (r.num + "/" + r.denom + " " + "i"); System.out.println ((r.num / r.denom) + " " ... 
69. Sentinel Values that reads telephone numbers as integers forums.oracle.comsentinel value? It looks like you are trying to parse the string. There is no built in method for this (that I know of) so you will have to write your own. Depending on what you know about the format of the string, you might want to use the String methods split(), or substring() to start with. http://java.sun.com/javase/6/docs/api/java/lang/String.html (A telephone "number" ... 
70. Converting string of numbers to ints forums.oracle.comwhile(go==true) { int[] info = new int[69]; System.out.print("Enter username: "); username = reader.nextLine(); //use "Hellfire010" if you're going to try this out try{ URL score = new URL("http://hiscore.runescape.com/index_lite.ws?player=" + username); BufferedReader in = new BufferedReader(new InputStreamReader(score.openStream())); String inputLine, ScoreList = ""; while ((inputLine = in.readLine()) != null) { ScoreList = (ScoreList + inputLine); } System.out.println(ScoreList); in.close(); }catch (IOException e) { System.err.println("Caught ... 
71. Add number to an Integer variable forums.oracle.com 
72. converting string number int o percentage forums.oracle.com 
73. help... how to separate the integer number..? forums.oracle.compublic class test { public static void main(String args[]) { int n = 23121888; int part1 = n / 1000000; int part2 = (n % 1000000  y)/10000; int part3 = n % 10000; System.out.println("Part 1 : " + part1 + "\nPart2 : " + part2 + "\nPart3 : " + part3); } } 
74. Specifying a number inside an int forums.oracle.comI know you use charAt( ); for specifying a specific char in a string. What is the code to specify an int inside an int which is more than one digit long EG: four digit int int = 1234 how do i say intAt(0); the number (int) at position 0 within the initial int I want to specify each one individually ... 
75. print integer numbers in Specfic Format forums.oracle.comShame on both of you. I recommend getting these books. Introduction to Java Programming (Y. Daniel Llang) Absolute Java Two of the best that i have seen. First Step Into Java  Dev Shed. This one to me at first seemed quite good. But then it started to feel like it was trying to teach Java to a 5th grader. The ... 
76. Number of occurrences in a int[ ] forums.oracle.com 
77. return true if an integer is an even number forums.oracle.com 
78. assigning number value (int) to user input (String) forums.oracle.com 
79. NumberFormatException when using Integer.decode with hex numbers forums.oracle.comI've tried using a string such as "0xdeadbeef" or "+0xdeadbeef" with the same results. Is not the natural size of an Integer object 32 bits? So the max is 0xFFFFFFFF. my example of 0xdeadbeef is well within this. I'm not sure how the run time system is seeing it as a negative number?? Still stuck!! Mike 
80. To write numbers ,in specific, integer data from java to a C program forums.oracle.comBoth methods work fine if there is a single write that is ,when i use a print(int) or write(int) of PrintWriter OR writeInt(int) of DataOutputStream to write one integer data it works fine..the same is causing problems when i do three consecutive writes into the socket using either of the methods.. any help would be of great help for my project:) ... 
81. How do i check if the number is integer or float forums.oracle.com 
82. how to convert integer number to UBE4 (unsigned big endian 4) format forums.oracle.com 
83. I need to strip down a long number to indidual integers. forums.oracle.comIf you are just told to strip it down into digits but not told to do anything with the digits then you don't need to keep the digits in integer variables. Just print them out as you get them. If you were not told an order in which you need to print them, print them in any order that makes the ... 
84. Decomposing a Three Digit int into three numbers forums.oracle.com 
85. If int is no Number  error. How to? Easy help please. forums.oracle.comThank you gentlemen, but what you wrote did not solve my problem ... I am so new in java that it may be easyer for me to walk on hands... Can i solve this problem lets say in one command? Somehow? Could you please give me some example? Because i think i may learn it best on hand of an example ... 
86. complex number, an integer power forums.oracle.comHi, new to the site, looking for a few answers and i stumbled on a few forums. Most people give good advice, but there are a few that are annoying. If someone posts on these forums, its assumed they've 'googled' for an answer, as that would be the fastest way to resolve something. The purpose of these posts is to get ... 
87. Comparing two equal Short numbers results to uknown equality forums.oracle.com 
88. Picking some numbers randomly from a pool of integers :) forums.oracle.comHello! I want a code to select randomly let's say 3 numbers from a pool of numbers like (1,2,4,7,8,34) which have evenly distributed probabilities. How this can be done? I have found only how to pick a number randomly from a range of integers, but this is not my case, as I don't want the possibility of a number being selected ... 
89. Returns the integer part of a real number forums.oracle.comHello, I need to know an integer value as part of a real number, like this: double a = 0; double x = 0; x = 1500.00; a = (x / 1000); now "a" must be equal to 1. Pascal has a function INT (a = INT(x/1000)), and what about java ? Thanks for help, guido 
90. hw to achieve the nxt int number??? forums.oracle.comhere is my jsp code.... dont know hw to proceed nxt.... <%@ taglib uri="/WEBINF/pagination.tld" prefix="paginationtag"%> <%@ page language="java" contentType="text/html; charset=ISO88591" pageEncoding="ISO88591"%> <%@ page import="java.util.*" %> <%@ page import="com.INFO.*" %> <%@ page import="com.DAO.*" %> 
91. String to Int. Words to numbers forums.oracle.com 
92. new Integer(((Number)formatter.parseObject(string)).intValue()) forums.oracle.comDecimalFormat df = new DecimalFormat("#.###"); NumberFormatter format = new NumberFormatter(df); n the above code i have to convert decimal number to integer, how the below code will fit to it or any other way new Integer(((Number)formatter.parseObject(string)).intVal ue()) What kind of drugs are you taking currently? What kind of decimal format do you expect from an number with no decimals? The sentence ... 
93. Get number of integer digits from BigDecimal forums.oracle.comNumber classes don't 'store this internal radix'. They use it in the code, as e.g. % 10 or / 10 or & 0xff or >>> 8. In the latter cases you can see that it is impossible to claim that the radix (256) is 'stored' anywhere at all. However as noted BigDecimal uses binary internally, much to my surprise. Doesn't alter ... 