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Which of the following statements about arrays in Java is true? a. Arrays in Java are dynamic and can change their size after creation. b. You can store different types of elements (e.g., integers and strings) in the same array in Java. c. The default value of elements in an array of integers in Java is null. d. The length of an array in Java can be determined using the length property.

Question

Which of the following statements about arrays in Java is true? a. Arrays in Java are dynamic and can change their size after creation. b. You can store different types of elements (e.g., integers and strings) in the same array in Java. c. The default value of elements in an array of integers in Java is null. d. The length of an array in Java can be determined using the length property.

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Solution

The correct statement about arrays in Java is d. The length of an array in Java can be determined using the length property.

Here's why:

a. Arrays in Java are not dynamic. Once an array is created, its size is fixed and cannot be changed.

b. In Java, arrays are homogeneous, meaning they can only store elements of the same type. So, you cannot store different types of elements (like integers and strings) in the same array.

c. The default value of elements in an array of integers in Java is not null, it's 0. For object arrays, the default value is null.

d. The length of an array in Java can indeed be determined using the length property. This property holds the number of elements in the array and is a public final field for the array object.

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