Arrays

In Java, what is the starting index of an array?

• 1
• -1
• Depends on the array size

• 0

What is the main advantage of using arrays over individual variables?

• Arrays take up less memory

• Arrays can store multiple data types

• Arrays are faster to process

• Arrays can hold multiple values of the same data type

What happens to the values in an integer array when it's first created without initialization?

• The values in the integer array are set to random values.
• The values in the integer array are set to zero.
• The values in the integer array are set to one.
• The values in the integer array are set to null.

Which of the following is NOT a valid way to declare and initialize an array in Java?

• int[] x = new int[4];

•  int x[];

  x = new int[4];

• int[] x = {5, 10, 15, 20};

• int[] x(4);

What type of exception will you get if you try to access an array index that doesn't exist?

• NullPointerException

• ArrayIndexOutOfBoundsException

• IllegalArgumentException

• RuntimeException