The Complete Java Developer Course: From Beginner to Master - Array

This video covers the fundamentals of arrays in Java, including their properties, operations, and practical applications.

What is a fundamental characteristic of elements in an array?

• They must be of different types.

• They must be initialized to zero.

• They must be homogeneous.

• They must be stored in separate memory locations.

How is memory allocated for an array in Java?

• In reverse order.

• In a circular buffer.

• Contiguously in memory.

• Randomly scattered in memory.

Which operator is used to allocate memory for an array in Java?

• allocate

• create

• new

• malloc

What is the purpose of the 'length' field in an array?

• To determine the memory address of the array.

• To specify the data type of the array.

• To indicate the number of elements the array can hold.

• To store the maximum value in the array.

What happens if you try to access an index outside the bounds of an array?

• The program will ignore the request.

• The program will return a default value.

• An ArrayIndexOutOfBoundsException is thrown.

• The program will automatically resize the array.

What is the highest valid index in an array of size 5?

• 4

• 6

• 3

• 5

What is a common error when working with array indices?

• Syntax error.

• Memory leak error.

• Type mismatch error.

• Off by one error.

What is a key difference between a regular for loop and an enhanced for loop?

• Regular for loops can iterate over any data structure.

• Enhanced for loops automatically handle index bounds.

• Regular for loops require a specific data type.

• Enhanced for loops can only iterate over arrays of strings.

In an enhanced for loop, what determines the type of the loop variable?

• The type of the array indices.

• The type of the loop counter.

• The type of the array name.

• The type of the array elements.

What is the main advantage of using an enhanced for loop?

• It allows for dynamic resizing of arrays.

• It automatically sorts the array.

• It simplifies iteration over array elements.

• It provides direct access to array indices.