8. Selenium Tutorial - II. Java for Selenium - 6. Java Program Structure

YouTube Excerpt: https://www.gcreddy.com/2021/05/java-program-structure.html Java Program Hierarchy: Java Project Java Package Java Class Java Program Structure, Java Environment setup, Java Syntax, Java Language Fundamentals, Writing Java statements, and writing Java code blocks. Java Program Structure – Java for Selenium Sections of Java Program 1. Documentation Section – Optional 2. Package Statement – Mandatory 3. Import Statement/s – Depends on our program requirement 4. Interface Section //Optional 5. Class Definition { //Mandatory 6. main method(){ //Main Program contains normal statements and code blocks Object Creation //Depends on our program requirement Declarations/Initialization/Reading – normal statements Operations, Display statements, etc… Code Blocks, Conditions/Decision-making blocks, Loop Blocks, Constructor Block., Etc… } } 1. Documentation Section It includes comments to tell the program’s purpose, it improves the readability of the Program 2. Package Statement The package statement identifies the package that a Java program belongs to. If your program does not include a package statement, the program belongs to the default package, which is simply a package that has no name. Example: package abcd; 3. Import statement/s We import predefined and user-defined libraries using the “import” keyword Example: import java.util.Scanner; java – Project util – Package Scanner – Class import java.util.*; // Importing all classes from a package 4. Interface Section It is an optional section. We can create an interface in this section if required. We use the interface keyword to create an interface. An interface is slightly different from the class. It contains only constants and method declarations. 5. Class Definition Ex: public class Sample{ } 6. main() Method Java program execution starts from the main() method, which is mandatory in every Java program. public static void main (String [] args){ //Code } public – Access Modifier static – Non Access Modifier (use the main method without invoking an object) void – Returns Nothing main – Predefined Identifier(Method name) ——————————————- //Within the Main method main method{ //Main Program Creating Object/s ClassName objectName = new ClassName(); Comments Declarations….(Variable with Data Types, Constants/Final Variables) Normal Statements int a;//Declaration a=100;//Initialization int b=a;//Reading System.out.println(10+20); //Print Statement final int x=100; if (){ //Condition Code Block . } for (){ //Loop Code Block . } } Java Syntax and Program Structure

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