Introduction to JAVA

The Motivation behind the invention of JAVA is?

• To develop a language that is only for mobile applications
• The motivation behind the invention of JAVA is to create a platform-independent programming language.
• To create a language that only runs on Windows
• To make a programming language that requires specific hardware

abbreviate WORA

• Write Once, Run Anywhere Fast
• Write Once, Read Anywhere
• Write Once, Run Always
• Write Once, Run Anywhere

Java derives much of its features from

• Swift and C

• C++ and PHP

• C and C++
• Python and C

A simple java program must contain

• A package declaration only
• A function without a return type
• A public class with a main method

• A main method without a class

The keyword used to define a class

• function
• Class

• define
• class

What is the function template of main method in JAVA

• static void main(String args)
• void main(String[] args)
• public static void main(String[] args)
• public void main(String[] args)

The name of the java file is decided by

• The name of the Java file is based on the main method name.
• The name of the Java file is determined by the package name.
• The name of the Java file is chosen randomly by the compiler.
• The name of the Java file is decided by the public class name.

The Case to be followed to define a class name is

• Lowercase

• snake_case
• CamelCase
• PascalCase

why should file name and the public class name need to be same in JAVA?

• It helps in reducing the file size during compilation.
• The file name must match the public class name to ensure proper compilation and organization.
• The file name can be different as long as the class is in the same package.
• It is required by the Java compiler for all classes.

System.out is a

• FileOutputStream object for file writing
• BufferedReader object for reading input
• PrintStream object for console output
• String object for text manipulation