The charAt() method is used to provide a single character by its index within a string.
The charAt() method is used to provide a single character by its index within a string.
Questions tagged [charat]
292 questions
2
votes
2 answers
Is there any easier way to set integer for string characters?
I am making converter which converts random string to numbers fancy way. But I was wondering is there easier way to do this:
package codec;
import javax.swing.JFrame;
public final class Codec extends JFrame {
public static void…
Pomper
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4 answers
How to read special characters in a string in java
I'm given a String & I need to find whether it contains any special character or not? I tried using charAt() and ASCII values.But it didn't work.Someone please help.Thanks in advance.
for(int i=0;i
Darpanjbora
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4 answers
String with 1000 digits, find the biggest 5 digits without an array
I know my code can be simpler and more efficient... My code is supposed to grab the biggest set of 5 digits. It works, except it only is grabbing 3 digits, what would i need to modify to change that?
public class thousandDigits {
public…
Frank
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2 answers
Verifying a String for Numbers and Periods/Decimals
I have this short snippet of code where I have to check a string to see if it contains integers and possibly a decimal. The string is an amount of money (12.34) so as well it can not go past the fourth index.
My question is I'm being told to use…
TGen
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3 answers
Java charAt() String index out of range: 5
I am trying to figure out "what 5-digit number when multiplied by 4 gives you its reverse?" using this code but I get error: Exception in thread "main" java.lang.StringIndexOutOfBoundsException: String index out of range: 5
at…
Vayelin
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charAt() and Math.pow()
Background:
I am making a simple base converter for a class assignment. I am fairly close to completion but need to tidy up the conversion algorithm to convert the user inputted value (in a given base) to a base 10 value.
Attempt:
import…
jclark754
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5 answers
IndexOutOfBounds Exception Java String Class charAt Method
Method CharAt of the Java String class throws a StringIndexOutOfBoundsException. But the Java API documentation says it throws an IndexOutOfBoundsException. I know that StringIndexOutOfBoundsException is a subclass of IndexOutOfBoundsException. But…
hohum
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3 answers
RegExp for current character JavaScript
I'm trying to validate a character to make sure it's a letter (not a number, symbol, etc.) BEFORE it's allowed to be entered into the form field. How can I do that with JavaScript?
Here is something I tried: