Java Development (13 Part Series)
1 Getting Back to Java: A Journey Through One of the Most Versatile Languages
2 How to Set Up Your Environment to Start Java Development
… 9 more parts…
3 IntelliJ IDEA on Ubuntu: Begin Your Journey into Java Development!
4 Your First Java Project in IntelliJ IDEA: Creating a “Hello World” in Java
5 Exploring Classes and the Main Method in Java
6 Exploring Class Organization with Packages in Java
7 Variables and Data Types in Java
8 Understanding float and double in Java
9 Types: char and boolean
10 Exploring Non-Primitive Types in Java: A Dive into Object-Oriented Programming
11 Understanding Strings and Arrays in Java
12 Exploring the for Loop in Java
13 Exploring While and DoWhile in Java: Master Loop Structures with Practical Examples
After learning about the double
and float
types, it’s time to dive into two other essential primitive types in Java: char
and boolean
. Ready to explore?
The char
Type
The char
type is ideal for representing a single Unicode character. This means you can store any character—letters, numbers, or symbols—using it. There are two ways to assign a value to a char
variable:
- Using single quotes, like
'A'
,'Ω'
, or'B'
. - Using a numeric value, corresponding to the character in the Unicode table. For example, the code below stores the letter “A” using its Unicode value:
char letterA = 65;char letterA = 65;char letterA = 65;
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Want to see char
in action? Check out this example:
public class PrimitiveTypes {public static void main(String[] args) {char letterA = 'a';char capitalA = 'A';System.out.println(letterA); // aSystem.out.println(capitalA); // A}}public class PrimitiveTypes { public static void main(String[] args) { char letterA = 'a'; char capitalA = 'A'; System.out.println(letterA); // a System.out.println(capitalA); // A } }public class PrimitiveTypes { public static void main(String[] args) { char letterA = 'a'; char capitalA = 'A'; System.out.println(letterA); // a System.out.println(capitalA); // A } }
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The boolean
Type
The boolean
type is one of the simplest—and most useful! It represents only two possible values:
true
false
This variable type is essential for making decisions and controlling the program’s flow, especially with conditionals like if
and while
. In Java, unlike some other languages where 0
and 1
are used to represent false and true, we explicitly use true
and false
.
An interesting detail is that boolean
variables often have names that resemble questions. Internationally, they typically start with “is,” while in some contexts, prefixes like “eh” might be used. Examples:
public class PrimitiveTypes {public static void main(String[] args) {boolean isJavaFun = true; // Examples: isRunning, isActiveboolean isAdult = false; // Examples: isTrue, isReady}}public class PrimitiveTypes { public static void main(String[] args) { boolean isJavaFun = true; // Examples: isRunning, isActive boolean isAdult = false; // Examples: isTrue, isReady } }public class PrimitiveTypes { public static void main(String[] args) { boolean isJavaFun = true; // Examples: isRunning, isActive boolean isAdult = false; // Examples: isTrue, isReady } }
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Now that you know how these types work, you can use them to make your code more intuitive and functional!
Java Development (13 Part Series)
1 Getting Back to Java: A Journey Through One of the Most Versatile Languages
2 How to Set Up Your Environment to Start Java Development
… 9 more parts…
3 IntelliJ IDEA on Ubuntu: Begin Your Journey into Java Development!
4 Your First Java Project in IntelliJ IDEA: Creating a “Hello World” in Java
5 Exploring Classes and the Main Method in Java
6 Exploring Class Organization with Packages in Java
7 Variables and Data Types in Java
8 Understanding float and double in Java
9 Types: char and boolean
10 Exploring Non-Primitive Types in Java: A Dive into Object-Oriented Programming
11 Understanding Strings and Arrays in Java
12 Exploring the for Loop in Java
13 Exploring While and DoWhile in Java: Master Loop Structures with Practical Examples
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