# digit « Integer « Java Data Type Q&A

### 1. how to store large integer in java( 10 digits )    stackoverflow.com

which java data type would be able to store the numerical value 9999999999 ?

### 2. Return first digit of an integer    stackoverflow.com

How in Java do you return the first digit of an integer.? i.e. 345 Returns an int of 3.

### 3. check for descending digits in integer    stackoverflow.com

How would I check for descending digits in an integer? For instance, if the user entered 98765, I would need to verify this and say the digits are descending and ...

### 4. What's the "java" way of converting chars (digits) to ints    stackoverflow.com

Given the following code:

``````    char x = '5';
int a0 = x - '0'; // 0
int a1 = Integer.parseInt(x + ""); ...``````

### 5. How can I extract the first 4 digits from an int? (Java)    stackoverflow.com

I'm looking to find a way to convert a string to an int in order to then extract and return the first 4 digits in this int. Note: It must remain ...

### 6. 5 digit integers ...    coderanch.com

Hi, I have a case in which i want my integers be 5 digitized, ex: 00001, 00011, 00100 bla bla bla. Is there an API that re formats my integers automatically based on this format after increasing the value of the integer or i have to do it myself ? Please advice ... Kind regards,

### 7. Breaking an integer into individual digits.    coderanch.com

Hi John Hope this helps you public class DigitExtractor{ int toBeBroken; /** Constructs a digit extractor that gets the digits in reverse order. @param anInteger - the integer to break up into digits */ public DigitExtractor(int anInteger){ toBeBroken = anInteger; } /** Returns the next digit to be extracted. @return the next digit */ public int nextDigit(){ int temp = -1; ...

### 9. Separating the Digits in an Integer    coderanch.com

package splitdigits; import java.util.Scanner; public class SplitDigits { public static void main(String[] args) { // Create scanner toobtain input from command window Scanner input = new Scanner(System.in); int Number; //User input number System.out.print( "Enter Five Digit Integer:");//Prompt Number= input.nextInt(5);//read integer from user Number/10000 // ... I know that I need to first check that the user inputs a five digit integer ...

### 10. Obtaining the digits of a integer.    coderanch.com

Hint: you are expecting a different value for every iteration of your loop. Yet, the loop changes nothing. So how could the result of each iteration change? My advice: back away from the keyboard and solve the problem with pencil and paper mathematically before trying to write code that mirrors the solution that you come up with.

### 11. Digits of an integer.    java-forums.org

i have a problem given in the book but i dont know how to deal with it, problem: Write a program that displays all integers between low and high that are the SUM OF THE CUBE OF THEIR DIGITS, In other words, find all the numbers xyz such as xyz = x(cube) + y (cube) + z (cube) , for example ...

### 14. Adding Digits of an integer    forums.oracle.com

I'm working on the same sort of programming exercise. I already figured out the caculations part but was having some trouble with some extra stuff and was wondering if anyone was around to help me out a bit. for my exercise I have to make it so the program would terminate if the number entered was 0... (I need help with ...

### 15. Using specific digits of an integer    forums.oracle.com

Hello. I am looking for a way to take a number, for example 1234, and put the last two digits into a new variable. for example int a = 1234; int b = /*magic code goes here*/ System.out.println("b = " + b); Running it will show that b = 34 I have an idea of converting it to a String, then ...

### 16. help with summing digits in an integer    forums.oracle.com

http://www.catb.org/~esr/faqs/smart-questions.html#writewell How To Ask Questions The Smart Way Eric Steven Raymond Rick Moen Write in clear, grammatical, correctly-spelled language We've found by experience that people who are careless and sloppy writers are usually also careless and sloppy at thinking and coding (often enough to bet on, anyway). Answering questions for careless and sloppy thinkers is not rewarding; we'd rather spend our ...

### 17. Assign a variable to each digit in a integer    forums.oracle.com

How do I assign a variable to each digit of a 4-digit integer. For example, suppose a user inputs 1234 and I want to first use that integer in a calculation and then encrypt that integer by placing the digits in another order. I would need to assign each digit as a variable, wouldn't I? Even if theres another way to ...