Java Programming for Complete Beginners - Java 16 - Step 06 - Java Arrays - Exercise - Create Student Class - Part 2 - M

This video tutorial covers the implementation of methods to calculate the total sum, maximum, minimum, and average of student marks in Java. It begins with a simple method to sum marks, followed by finding the maximum and minimum marks using loops. The tutorial then explains calculating the average using BigDecimal for precision, addressing potential issues with floating-point arithmetic. Debugging tips and code refactoring techniques are also discussed.

What is the initial value of 'sum' when calculating the total sum of marks?

• The average of the marks

• The maximum mark

• The first mark in the list

• Zero

Which method is used to find the maximum mark in a list?

• Using a predefined Java method

• Comparing each mark with zero

• Sorting the marks and picking the first

• Looping through the marks and comparing each

What happens if you start the maximum mark calculation with Integer.MIN_VALUE?

• It will ignore zero values

• It will handle negative marks correctly

• It will cause an error

• It will only work for positive numbers

What is the advantage of using refactoring tools in Eclipse?

• It finds syntax errors

• It compiles the code

• It renames variables across the codebase

• It automatically writes code

Why might you need to use Integer.MIN_VALUE when finding a minimum mark?

• To ensure the method works with negative numbers

• To make the code run faster

• To avoid syntax errors

• To simplify the logic

Why is BigDecimal preferred over int for calculating average marks?

• It is faster

• It handles floating-point values accurately

• It is easier to code

• It uses less memory

What issue arises when dividing integers to calculate an average?

• Loss of precision

• Overflow error

• Underflow error

• Memory leak

What is the result of using integer division in average calculation?

• Accurate result

• Increased memory usage

• Loss of decimal precision

• Faster computation

How can non-terminating decimal expansions be handled in Java?

• By using a loop to truncate decimals

• By using int instead of BigDecimal

• By converting to a string

• By specifying precision and rounding mode

What is the purpose of specifying a rounding mode in BigDecimal?

• To increase calculation speed

• To determine how to round decimal values

• To simplify code syntax

• To reduce memory usage