- Java Programming Basics
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- Java Environment Setup
- Java Separators
- Java Data Types
- Java Variables
- Java Variable Scope
- Java Type Casting
- Java Operators
- Java Increment Decrement
- Java Left Shift
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- Java Bitwise Operators
- Java Ternary Operator
- Java Control Statements
- Java if-else statement
- Java for Loop
- Java while Loop
- Java do-while Loop
- Java switch Statement
- Java break Statement
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- Java Popular Topics
- Java Arrays
- Java Multidimensional Array
- Java Strings
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- Java OOP
- Java Classes and Objects
- Java Constructors
- Java Constructor Overloading
- Java Object as Parameter
- Java Returning Objects
- Java Encapsulation
- Java Abstraction
- Java Inheritance
- Java Polymorphism
- Java Packages
- Java Import Statement
- Java Multithreading
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- Java Programming Examples
- Java Programming Examples
Java Separators
Understanding and utilizing separators correctly are two essential components of writing Java code that is effective and readable. Different elements of a Java program are separated by separators, which are symbols or characters. Variables, statements, expressions, and method calls are examples of these components.
We will examine the various separators in Java and give examples of their use to enhance the readability and functionality of Java code in this blog post. Understanding separators is a crucial part of writing high-quality code that is simple to read, understand, and maintain, whether you are a novice or seasoned Java developer.
In Java, there are a few characters that are used as separators. The most commonly used separator in Java is the semicolon (;). As you have seen, it is used to terminate the statements.
The separators are listed in the following table:
Symbol | Name | Description |
---|---|---|
( ) | Parentheses | Used to contain the lists of parameters in method definition and invocation. Also used for defining the precedence in expressions, containing expressions in control statements, and surrounding cast types. |
{ } | Braces | Used to contain the values of automatically initialized arrays. Also used to define a block of code, for classes, methods, and local scopes. |
[ ] | Brackets | Used to declare array types. Also used when dereferencing array values. |
; | Semicolon | Terminates the statements |
, | Comma | Separates consecutive identifiers in a variable declaration. Also used to chain statements together inside a for statement. |
. | Period | Used to separate package names from subpackages and classes. Also used to separate a variable or method from a reference variable. |
:: | Colons | Used to create a method or constructor reference (Added by JDK 8) |
Java Separators Example
The following Java program contains some separators:
class JavaProgram { public static void main(String args[]) { // commas are used to separate the variable declarations int i, j=10, k=11; // semicolon is used to indicate the end of the variable declaration statement for(i=0; i<j; i++) { System.out.println("I am " + i); // semicolon is used to indicate the end of the println statement } // curly braces are used to enclose the body of the for loop // parentheses are used to enclose the argument passed to the println method System.out.println(k + " is biggest here."); // period is used to access the println method of the System.out object } // curly braces are used to enclose the body of the main method }
i, j, and k are the three integer variables that the program declares. Initial values for the variables j and k are 10 and 11, respectively. The program then enters a for loop that runs as long as i is less than j. The for loop initializes i to 0, increments i by 1 at the end of each iteration, and prints the value of i to the console using the println method of the System.out object.
After the for loop has finished, the program prints the value of k and a string "is biggest here" to the console using the println method of the System.out object.
The sample output of the above Java program is shown here:

Advantages of separators in Java
- Separators aid in visually separating different elements of a Java program, making the code easier to read and understand. You can improve the organization and structure of your code by using separators such as commas and periods.
- Separators are used to indicate the end of statements, expressions, and declarations, which aids in the reduction of syntax errors in Java code. Using the proper separators aids the Java compiler in correctly interpreting the code, reducing the likelihood of errors.
- Separators such as parentheses and curly braces are essential for defining method arguments and enclosing code blocks. By correctly using these separators, you can create more functional and efficient Java programs.
Disadvantages of separators in Java
- Excessive use of separators can make your code cluttered and difficult to read. Separators should be used sparingly and only when necessary for readability and interpretation of the code.
- Using separators incorrectly can result in syntax errors in Java code. For example, failing to include a semicolon at the end of a statement may result in an error from the Java compiler. To avoid syntax errors, it is critical to understand how to use separators correctly.
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