Complete Java SE 8 Developer Bootcamp - Primitive Literals

The video tutorial covers the concept of default literals in programming, focusing on how different types of literals are interpreted by default. It explains the default types for characters, booleans, and numbers, including int, long, float, and double. The tutorial provides code examples to illustrate these concepts and highlights best practices for readability, such as avoiding lowercase 'L' for long literals. It also discusses working with octal and hexadecimal numbers, introduces binary literals, and explains the use of numeric separators for better readability, along with the rules governing their use.

What is the default type for a literal number without a decimal point in Java?

• Double

• Float

• Int

• Long

Which suffix is used to denote a long literal in Java?

• D

• L

• F

• B

How is an octal number represented in Java?

• Starting with 0L

• Starting with 0

• Starting with 0X

• Starting with 0B

What is the hexadecimal representation of the decimal number 126?

• 126H

• 7E

• 0H126

• 0X7E

What is the binary equivalent of the decimal number 5 in Java?

• 0B101

• 0B110

• 0B111

• 0B100

In Java, what does the underscore character (_) do in numeric literals?

• Serves as a separator for readability

• Indicates a binary number

• Changes the numeric value

• Acts as a decimal point

Where is it illegal to place an underscore in a numeric literal?

• Before a decimal point

• At the start or end

• After a decimal point

• Between digits