Java Programming for Complete Beginners - Java 16 - Step 02 - Java Integer Data Types - Puzzles - Octal, Hexadecimal, Po

This video tutorial covers integer representations in Java, including byte, short, int, and long types. It explains octal and hexadecimal number systems, highlighting their usage and potential errors. The tutorial also discusses implicit and explicit casting, and the use of increment and decrement operators, providing practical examples and advice on avoiding code complexity.

What is the value of an octal number 010 in Java?

• 8

• 10

• 16

• 0

Which of the following is a valid hexadecimal number?

• 0X9G

• 0XG

• 0X1A

• 0XH2

Why can't you store the value 128 in a byte variable in Java?

• Because 128 is a double

• Because byte can only store positive values

• Because 128 is a float

• Because byte can only store values from -128 to 127

What is the result of explicit casting in Java?

• Automatically converting a smaller data type to a larger one

• Manually converting a larger data type to a smaller one

• Automatically converting a larger data type to a smaller one

• Manually converting a smaller data type to a larger one

In Java, what happens during a post-increment operation?

• The variable is decremented after the operation

• The variable is incremented before the operation

• The variable is incremented after the operation

• The variable is decremented before the operation

What is the value of J after executing 'int J = I++;' if I starts at 10?

• 10

• 11

• 9

• 12

In a pre-decrement operation, what happens first?

• The variable is incremented first

• The operation is skipped

• The variable is decremented first

• The operation is executed first