Java - Introduction to Programming

What is a computer program?

• A piece of hardware
• A set of instructions for a computer
• An image on screen
• An email client

Answer explanation

A program tells the computer what to do using code.

Which of the following is a programming language?

• Excel
• Photoshop
• Java
• USB

Answer explanation

Java is a popular programming language used to write software.

Syntax in programming is similar to:

• Maps
• Grammar in English
• Rules of cricket
• Traffic signals

Answer explanation

Syntax refers to rules of writing code, like grammar in language.

Which of these has correct Java syntax?

• System.out.print("Hello");
• print.System("Hello")
• Hello("System.out")
• output.println("Hello")

Answer explanation

Java uses System.out.print() for displaying output.

What does a compiler do?

• Runs code line-by-line
• Writes code automatically
• Translates entire code at once
• Compiles images

Answer explanation

A compiler translates the entire code before running.

What does an interpreter do?

• Translates code line-by-line
• Draws shapes
• Converts images
• Edits documents

Answer explanation

Interpreter translates and runs each line one at a time.

What is a syntax error?

• Mistake during user input
• Wrong spelling in comments
• Breaking language grammar rules
• Overuse of print

Answer explanation

Syntax errors happen when you break grammar rules of code.

What is a runtime error?

• Error while installing Java
• Error while typing code
• Error while program is running
• Syntax error

Answer explanation

It occurs when the program starts but crashes mid-way.

A logical error means:

• Program doesn’t run
• Program is too long
• Output is wrong
• No input accepted

Answer explanation

The program runs but gives an incorrect result due to logic flaw.

What is pseudocode?

• A type of code
• A virus
• Plain-English steps for logic
• Compiler output

Answer explanation

Pseudocode is a way to describe logic before writing real code.