Java Program to convert int type variables to char
In this program, we will learn to convert the integer (int) variable into a character (char) in Java.
Example 1: Java Program to Convert int to char
class Main{
public static void main(String[] args){
// create int variables
int num1 = 80;
int num2 = 81;
// convert int to char
// typecasting
char a = (char)num1;
char b = (char)num2;
// print value
System.out.println(a); // P
System.out.println(b); // Q
}
}
In the above example, we have int
type variables num1 and num2. Notice the line,
char a = (char)num1;
Here, we are using typecasting to covert an int
type variable into the char
type variable.
Note that the int
values are treated as ASCII values. Hence, we get P for int
value 80 and Q for int
value 81. It is because the ASCII value of P and Q are 80 and 81 respectively.
Example 2: int to char by using forDigit()
We can also use the forDigit()
method of the Character
class to convert the int
type variable into char
type.
class Main{
public static void main(String[] args){
// create int variables
int num1 = 1;
int num2 = 13;
// convert int to char
// for value between 0-9
char a = Character.forDigit(num1, 10);
// for value between 0-9
char b = Character.forDigit(num2, 16);
// print value
System.out.println(a); // 1
System.out.println(b); // d
}
}
Notice the expression,
char a = Character.forDigit(num1, 10);
We have used the forDigit()
method converts the specified int
value into char
value.
Here, 10 and 16 are radix values for decimal and hexadecimal numbers respectively. That is, if the int
value is between 0 to 9, we use 10 as radix value, if the int
value is between 0 to 15, we use 16, and so on.
To learn more about the forDigit()
method, visit Java Character.forDigit() (Official Oracle Documentation).
Example 3: int to char by adding ‘0’
In Java, we can also convert the integer into a character by adding the character ‘0’ with it. For example,
class Main{
public static void main(String[] args){
// create int variables
int num1 = 1;
int num2 = 9;
// convert int to char
char a = (char)(num1 + '0');
char b = (char)(num2 + '0');
// print value
System.out.println(a); // 1
System.out.println(b); // 9
}
}
In the above example, notice the line,
char a = (char)(num1 + '0');
Here, the character ‘0’ is converted into ASCII value 48. The value 48 is added to the value of num1 (i.e. 1). The result 49 is the ASCII value of 1. Hence, we get the character ‘1’ as the output.
Note: This is only applicable for int
value 0 to 9.
Python Example for Beginners
Two Machine Learning Fields
There are two sides to machine learning:
- Practical Machine Learning:This is about querying databases, cleaning data, writing scripts to transform data and gluing algorithm and libraries together and writing custom code to squeeze reliable answers from data to satisfy difficult and ill defined questions. It’s the mess of reality.
- Theoretical Machine Learning: This is about math and abstraction and idealized scenarios and limits and beauty and informing what is possible. It is a whole lot neater and cleaner and removed from the mess of reality.
Data Science Resources: Data Science Recipes and Applied Machine Learning Recipes
Introduction to Applied Machine Learning & Data Science for Beginners, Business Analysts, Students, Researchers and Freelancers with Python & R Codes @ Western Australian Center for Applied Machine Learning & Data Science (WACAMLDS) !!!
Latest end-to-end Learn by Coding Recipes in Project-Based Learning:
Applied Statistics with R for Beginners and Business Professionals
Data Science and Machine Learning Projects in Python: Tabular Data Analytics
Data Science and Machine Learning Projects in R: Tabular Data Analytics
Python Machine Learning & Data Science Recipes: Learn by Coding
R Machine Learning & Data Science Recipes: Learn by Coding
Comparing Different Machine Learning Algorithms in Python for Classification (FREE)
Disclaimer: The information and code presented within this recipe/tutorial is only for educational and coaching purposes for beginners and developers. Anyone can practice and apply the recipe/tutorial presented here, but the reader is taking full responsibility for his/her actions. The author (content curator) of this recipe (code / program) has made every effort to ensure the accuracy of the information was correct at time of publication. The author (content curator) does not assume and hereby disclaims any liability to any party for any loss, damage, or disruption caused by errors or omissions, whether such errors or omissions result from accident, negligence, or any other cause. The information presented here could also be found in public knowledge domains.