Question

What is the general form for declaring and creating a one-dimensional array in Java?

a) arrayName = new dataType[size];
b) dataType arrayName[size];
c) arrayName[size] = new dataType;
d) arrayName = dataType[size];

Answer 1

The correct syntax for declaring and creating a one-dimensional array in Java is 'arrayName = new dataType[size];', where 'dataType' is the type of data stored, 'arrayName' is the variable name, and 'size' is the number of elements it can hold.

Step-by-step explanation:

The general form for declaring and creating a one-dimensional array in Java is option (a): arrayName = new dataType[size];.

Let us break down this syntax:

• dataType: This specifies the type of data that the array will hold, such as int, double, String, etc.
• arrayName: This is the identifier chosen for the array variable. It is the name by which the array will be referenced in the code.
• size: This is an integer value that determines the number of elements the array will contain.

Here is an example of declaring and creating an array for integers: int[] numbers = new int[10]; This creates an array called numbers that can hold ten integer values.