Convert int to char in java

Below is a code snippet,

int a = 1;
char b = (char) a;
System.out.println(b);

But what I get is empty output.

int a = '1';
char b = (char) a;
System.out.println(b);

I will get 1 as my output.

Can somebody explain this? And if I want to convert an int to a char as in the first snippet, what should I do?

int a = 1;
char b = (char) a;
System.out.println(b);

will print out the char with ascii value 1 (start-of-heading char, which isn't printable).

int a = '1';
char b = (char) a;
System.out.println(b);

will print out the char with ascii value 49 (one corresponding to '1')

If you want to convert a digit (0-9), you can add 48 to it and cast, or something like Character.forDigit(a, 10);.

If you want to convert an int as in ascii value, you can use Character.toChars(48) for example.

Convert int to char in java, int a = 1; char b = (char) a; System.out.println(b);. will print out the char with ascii value 1 (start-of-heading char, which isn't printable). int a = '1'  How to Convert int to char in Java. To convert a higher data type to lower data type, we need to do typecasting. Casting is also required when we want to convert ASCII value into character. It is called an explicit conversion. There are two methods to convert int to char: Using typecast operator; Using forDigit() method; Using typecast operator

My answer is similar to jh314's answer but I'll explain a little deeper.

What you should do in this case is:

int a = 1;
char b = (char)(a + '0');
System.out.println(b);

Here, we used '0' because chars are actually represented by ASCII values. '0' is a char and represented by the value of 48.

We typed (a + '0') and in order to add these up, Java converted '0' to its ASCII value which is 48 and a is 1 so the sum is 49. Then what we did is:

(char)(49)

We casted int to char. ASCII equivalent of 49 is '1'. You can convert any digit to char this way and is smarter and better way than using .toString() method and then subtracting the digit by .charAt() method.

Java int to char conversion with examples, In the last tutorial, we have discussed char to int conversion. In this guide, we will see how to convert an int to a char with the help of examples. Java. Below is a code snippet, int a = 1; char b = (char) a; System.out.println(b); But what I get is empty output. int a = '1'; char b = (char) a; System.out.println(b); I will get 1 as my output.

It seems like you are looking for the Character.forDigit method:

final int RADIX = 10;
int i = 4;
char ch = Character.forDigit(i, RADIX);
System.out.println(ch); // Prints '4'

There is also a method that can convert from a char back to an int:

int i2 = Character.digit(ch, RADIX);
System.out.println(i2); // Prints '4'

Note that by changing the RADIX you can also support hexadecimal (radix 16) and any radix up to 36 (or Character.MAX_RADIX as it is also known as).

How to Convert int to char in Java, 65 is the ASCII value of A. We cast the number from an integer to char, converting it to the letter A. In this guide, we will see how to convert an int to a char with the help of examples. Java int to char conversion example. To convert a higher data type to lower data type, we need to do typecasting. Since int is higher data type (4 bytes) than char (2 bytes) so we need to explicitly typecast the int for the conversion.

int a = 1;
char b = (char) a;
System.out.println(b);

hola, well i went through the same problem but what i did was the following code.

int a = 1
char b = Integer.toString(a).charAt(0);
System.out.println(b);

With this you get the decimal value as a char type. I used charAt() with index 0 because the only value into that String is 'a' and as you know, the position of 'a' into that String start at 0.

Sorry if my english isn't well explained, hope it helps you.

Java Convert Integer to String, Converting a primitive int , or its respective wrapper class Integer , to a String is a This method accepts other types as well - boolean , char , char[] , double  Given a character in Java, the task is to convert this character into an integer. Input: ch = '3' Output: 3 Input: ch = '9' Output: 9 There are various ways in which one can convert char to its int value.

int a = 1;
char b = (char) (a + 48);

In ASCII, every char have their own number. And char '0' is 48 for decimal, '1' is 49, and so on. So if

char b = '2';
int a = b = 50;

How to Convert int to char in Java, This tutorial shows how to convert int to char in Java with methods like using ASCII values, character.forDigits, and Integer.toString. Java char to int conversion using Character.getNumericValue() We can also use Character.getNumericValue(char ch) method to convert a char to an int. This method accepts char as an argument and returns equivalent int (ASCII) value after conversion.

Convert char to int in Java with Examples, Convert char to int in Java with Examples. Given a character in Java, the task is to convert this character into an integer. Input: ch = '3' Output: 3 Input: ch = '9'  Let's see a couple of more ways to convert an Integer to String in Java. Good knowledge of Java data types is important to write Java programs, both easy and tough and that's why I suggest you to spend some time learning about data types in Java.

Int to char Java Example, Example: int converted to a long, float or double (refer to the table above for size of each data type). Narrowing conversion is to convert a higher  Java Convert char to int. We can convert char to int in java using various ways. If we direct assign char variable to int, it will return ASCII value of given character. If char variable contains int value, we can get the int value by calling Character.getNumericValue(char) method. Alternatively, we can use String.valueOf(char) method.

Java Program - Convert Int to Char, Java – Convert Int to Char. In this tutorial, we shall learn how to convert an integer value to a char value. Firstly, we shall go through the process of narrowing  To convert a character to String; To convert a String to character; Convert Char To String . There are multiple ways to convert a Char to String in Java. In fact, String is made of Character array in Java. Char is 16 bit or 2 bytes unsigned data type. We can convert String to Character using 2 methods - Method 1: Using toString() method

Comments
  • "Convert an int to a char?" Maybe b = (char)('0' + a) but only for 0 <= a <= 9.
  • Decimal value 01 is a non-printing character; it's working properly.
  • System.out.println('b'+3); how I can get b3 instead 101 with using println ? any other way instead printf?
  • @UnKnown You need to make it a string instead of a char as follows System.out.println("b" + 3);
  • Character.toChars operates on Unicode code points, not ASCII values. You get the same (for BMP only) if you just cast int to char.
  • @ProgrammingNub Define "the int's value". .Don't you want it to print the digit 4? Or would you like to print the Ascii-value of the int, so that 65 prints A ? Because my answer here prints the expected behaviour for the requirements of this question. See ideone.com/09LAFR
  • Sort of.... char is a UTF-16 code unit. 68 as a UTF-16 code unit is the only code unit needed to represent the Unicode codepoint U+0044. System.out will change the encoding of text to the default encoding (presumably matching the terminal/console the program is running in). println takes a char and attempts to encode it. Since the char is a complete codepoint, it can try. Since U+0044 is a character in almost all character sets, there should be success in getting it to the terminal ungarbled. Nothing to do with ASCII.
  • Sorry but a char is not an int, because it is made of a different number of bytes (quick ref. char-int representation - stackoverflow). A char can be represented by a number, you are right, but it is not an integer.
  • Also, I think you may find the second line should read "String b = Integer.toString(a);"
  • The char data type is well defined in java.lang.Character as well as its relationship to int and unicode code points and code units.
  • No need to make it a String in the process, and you have mismatching number of paranthesis.
  • Please provide an explanation instead of just a code dump.
  • While this code-only post might answer the question, please add an explanation of why it does so. This will help future users evaluate the answer for their situation.