Ascii use in java

Program for Display Alphabets in Java using ASCII value

Program for Display Alphabets in Java using ASCII value

In this article, we will discuss the concept of Program for Display Alphabets in Java using ASCII value

In this post, we are going to learn how to display all the upper case(A to Z) and lower case (a to z) Alphabets using ASCII value in Java programming language

ASCII value of upper case Alphabets letters are between 65 – 90

ASCII value of lower case Alphabets letters are between 97 – 122

Code for Display Alphabets in Java using ASCII value

Program for print upper case and lower case Alphabets Using for loop

The program displays all the upper case and lower case alphabet letters between a to z using for loop in Java language

public class DisplayAlphabetsfor < public static void main(String args[])< char ch;//char variable declaration //Printing lower case Alphabets System.out.println("Lower case Alphabets are: \n"); for(ch=97; chSystem.out.print("\n");//move to next line //Printing upper case Alphabets System.out.println("Upper case Alphabets are: \n"); for(ch=65; ch > >

When the above code is executed, it produces the following result

In the above program, we are using two for loops , one is used to print upper case letters and another to print lower case letters

• We will declare a counter variable “ ch ” of the for loop and initialize it by “65”(for print upper case) or “97” (for print lower case);
• The program checks the given condition( ch
• if the condition is false – loops will be terminated

Program for print upper case and lower case Alphabets Using while loop

The program displays all the upper case and lower case alphabet letters between a to z using while loop in Java language

public class DisplayAlphabetswhile < public static void main(String args[])< char ch;//char variable declaration //Printing lower case Alphabets System.out.println("Lower case Alphabets are: \n"); ch=97; while(ch<=122)System.out.print("\n");//move to next line //Printing upper case Alphabets System.out.println("Upper case Alphabets are: \n"); ch=65; while(ch <=90)> >

When the above code is executed, it produces the following result

In the above program, we are using two while loops , one is used to print upper case letters and another to print lower case letters

• We will declare a counter variable “ ch ” of the while loop and initialize it by “65”(for print upper case) or “97” (for print lower case);
• The program checks the given condition( ch
• if the condition is false – loops will be terminated

Program for Print upper case and lower case Alphabets Using the do-while loop

The program displays all the upper case and lower case alphabet letters between using the do-while loop in Java language

public class DisplayAlphabetsdowhile< public static void main(String args[])< char ch;//char variable declaration //Printing lower case Alphabets System.out.println("Lower case Alphabets are: \n"); ch=97; dowhile(ch<=122); System.out.print("\n");//move to next line //Printing upper case Alphabets System.out.println("Uppercase Alphabets are: \n"); ch=65; dowhile(ch <=90); >>

When the above code is executed, it produces the following result

In the above program, we are using two do-while loops, one is used to print upper case letters and another to print lower case letters

• We will declare a counter variable “ch” of the do-while loop and initialize it by “65”(for print upper case) or “97” (for print lower case);
• The program checks the given condition( ch
• if the condition is false – loops will be terminated

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Get the ASCII Value of a Character in Java

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We’re looking for a new Java technical editor to help review new articles for the site.

1. Overview

In this short tutorial, we’ll see how to get the ASCII value of a character in Java.

2. Use Casting

To get the ASCII value of a character, we can simply cast our char as an int:

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

Remember that char in Java can be a Unicode character. So our character must be an ASCII character to be able to get its correct ASCII numeric value.

3. Character Inside a String

If our char is in a String, we can use the charAt() method to retrieve it:

String str = "abc"; char c = str.charAt(0); System.out.println((int) c);

4. Conclusion

In summary, we’ve learned how to get the ASCII value of a character in Java.

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How to Convert an ASCII Code to char in Java?

ASCII is the abbreviation of “American Standard Code for Information Interchange”. A computer knows the language in numeric form. Therefore, ASCII is used to communicate with computers by exchanging information. All keyboard characters, including all alphabets, numbers, and special characters, comprise a unique ASCII code that the computer understands to process the typed key.

This blog will discuss converting an ASCII code to a character in Java.

How to Convert an ASCII Code to char in Java?

For converting an ASCII code to a character in Java, there are different methods listed below:

Let’s check the functionality of each of these methods with examples.

Method 1: To Convert an ASCII Code to char Using Type Casting

Most programmers utilize Type Casting for converting an ASCII code to char in a Java program as it directly converts one data type to another.

Syntax
The syntax for converting ASCII Code to char in Java using the Type Casting method is given as:

“ascii” is the variable that stores a value of data type “int”. The keyword “char” with the parenthesis like “(char)” indicates that the mentioned int type “ascii” variable is typecasted into a character, and the resultant value will be stored in “asciiToChar”.

Let’s check out an example to understand the conversion of ASCII code to char using Type Casting.

Example
Here, we have an integer type variable “ascii” initialized with “69”:

Now, we will convert the created variable to a character using Type Casting:

Lastly, we will print the resultant character “ascii”:

The output indicates that the ASCII code “69” is converted to “E” char:

Let’s check some other methods to convert the ASCII code to char in Java.

Method 2: To Convert an ASCII Code to char Using toString()

The Java wrapper class named “Character” also offers a “toString()” method, which allows us to convert an ASCII code to the string representing the character’s value.

Here, “ascii” is an “int” type data variable containing ASCII code that will be converted to a string referring to the corresponding character.

Example
In this example, we have an ASCII value “75” stored in “ascii”:

We will call the “Character.toString()” method by passing the created character as a parameter and then store the returned value in “asciiToChar” String type variable. Now the question is why it is a String type variable, not a character type? Because the toString() method will always return a string:

Lastly, execute the “System.out.println()” method to print out the required value:

As you can see, the given program successfully converted “75” ASCII code to the “K” character:

We have one more method to perform the same operation. So, move to the next section!

Method 3: To Convert an ASCII Code to char Using toChars()

The “toChars()” method of the Character wrapper class can also be utilized to convert an ASCII code to char in a Java program. It returns the output as an array of characters.

Here, “ascii” is an integer type variable having ASCII code that is passed to the “Character.toChars()” method. This method will return a character array.

Example
Firstly, we will create a variable named “ascii” having “116” as ASCII code:

Then, we will call the “Character.toChars()” method, pass “ascii” as an argument, and store the returned char array in “asciiToChar”:

Lastly, we will print the output on the console:

System . out . print ( «Ascii » + ascii + » is a value of Character: » ) ;
System . out . println ( asciiToChar ) ;

We presented the easiest methods to convert ASCII code to char in Java.

Conclusion

To convert ASCII code to a character, you can use different methods such as Type Casting, toString() method, and toChars() method of the Character class. The toString() method will return a character as a String, while the toChars() method returns the array of characters. Type Casting is the most common and easy method to convert an ASCII code to a character, as it directly typecasts the ASCII code to char. This blog discussed the methods used to convert an ASCII code to char in Java.

About the author

Farah Batool

I completed my master’s degree in computer science. I am an academic researcher and love to learn and write about new technologies. I am passionate about writing and sharing my experience with the world.

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