Exam 7: Arrays and the Arraylist Class

If numbers is a two-dimensional array, which of the following would give the number of columns in row r?

Once an array is created, its size cannot be changed.

Java performs ____________, which means that it does not allow a statement to use a subscript that is outside the range of valid subscripts for the array.

It is common practice to use a __________ variable as a size declarator.

A ragged array is __________.

To return an array of long values from a method, which return type should be used for the method?

What would be the result after the following code is executed? final int SIZE = 25; Int[ ] array1 = new int[SIZE]; ).. // Code that will put values in array1 Int value = 0; For (int a = 0; a <= array1.length; a++) { Value += array1[a]; }

What does the following statement do? double[ ] array1 = new double[10];

Objects in an array are accessed with subscripts, just like any other data type in an array.

Which of the following is a correct method header for receiving a two-dimensional array as an argument?

Any items typed on the command line, separated by a space, after the name of the class are considered to be one or more arguments that are to be passed into the main method.

Java limits the number of dimensions that an array can have to 15.

Which of the following is a correct method header for receiving a two-dimensional array as an argument?

The ___________ method is used to insert an item into an ArrayList.

You can use the __________ method to replace an item at a specific location in an ArrayList.

What will be the value of x[8] after the following code is executed? final int SUB = 12; Int[ ] x = new int[SUB]; Int y = 20; For(int i = 0; i < SUB; i++) { X[i] = y; Y += 5; }

If final int SIZE = 15 and int[ ] x = new int[SIZE], what would be the range of subscript values that could be used with x[ ]?

A(n) __________ is used as an index to pinpoint a specific element within an array.

Which of the following is a valid declaration for a ragged array with five rows but no columns?

For the following code, what would be the value of str[2]? String[ ] str = {"abc", "def", "ghi", "jkl"};