Java Convert int to char

7 Dec 2024 | 6 min read

We can convert int to char in Java using typecasting. In order to convert higher data type into lower data type, we need to perform typecasting. Here, the ASCII character of integer value will be stored in the char variable.

To get the actual value in char variable, we can add '0' with int variable. Alternatively, we can use Character.forDigit() method.

Java int to char Example: Using Type casting

Let's see the simple code to convert long to int in Java.

File Name: IntToCharExample1.java

Output:

But if we store 1, it will store ASCII character of given number that is start of heading which is not printable. So it will not print anything on the console.

File Name: IntToCharExample2.java

Output:

If we add '0' with int variable, it will return actual value in the char variable. The ASCII value of '0' is 48. So, if we add 1 with 48, it becomes 49 that is equal to 1. The ASCII character of 49 is 1.

File Name: IntToCharExample3.java

Output:

If we store integer value in a single quote, it will store actual character in char variable.

File Name: IntToCharExample4.java

Output:

To get the actual value, we can also use Character.forDigit() method.

File Name: IntToCharExample5.java

Output:

To get the hexa value, use redix 16 in Character.forDigit() method.

File Name: IntToCharExample6.java

Output:

Let's see some other popular ways to convert int to char

Method 1: Using Switch Case

File Name: IntToCharSwitchCase.java

Output:

The integer 1 is converted to character: a
The integer 2 is converted to character: e
The integer 3 is converted to character: i
The integer 4 is converted to character: o
The integer 5 is converted to character: u

Method 2: Using Concept of Type-Casting

File Name: IntToCharTypeCasting.java

Output:

The ASCII value 65 is converted to character: A
The ASCII value 66 is converted to character: B
The ASCII value 67 is converted to character: C
The ASCII value 97 is converted to character: a
The ASCII value 98 is converted to character: b
The ASCII value 99 is converted to character: c

In this program, the for-each loop iterates through an array of integers. Each integer in the array represents an ASCII value. Inside the loop, the integer value is cast to a char using (char) value. This casting operation converts the integer, which is assumed to be a valid ASCII or Unicode code point, directly into the corresponding character. The converted character is then printed to the console.

Method 3: Using Modulo Operator

File Name: IntToCharModulo.java

Output:

The number 1 is converted to character: A
The number 26 is converted to character: Z
The number 27 is converted to character: A
The number 52 is converted to character: Z
The number 53 is converted to character: A

Method 4: Using String Array and Indexing

Filename: IntToCharStringArray.java

Output:

The number 1 is converted to character: A
The number 3 is converted to character: M
The number 5 is converted to character: P
The number 2 is converted to character: X
The number 4 is converted to character: K