Which reserved word in Java is used to create an instance of a class
~~ new
The relationship between a class and an object is best described as...
~~ objects are instances of classes
Which of the following would not be considered an algorithm?
pseudocode, shopping list, recipe, computer progra...
What are the indexes for the first and last positions of an array called x?
✓✓~~ x[0] and x[x.length-1]
Immediately after instantiating a new array of primitives, what fills the array? What
about an array of objects?
✓✓~~ Primitive: default value fills the array (0 for int, 0.0 for double, false for boolean)
Objects: null fills array
What happens when you try to access an array element past the end of an array?
✓✓~~ An exception of type ArrayIndexOutOfBoundsException is thrown
Instantiate three arrays called x,y,and z of types int, String, and BankAccount,
respectively, all of size 10.
✓✓~~ int[] x = new int[10];
String[] y = new String[10];
BankAccount[] z = new BankAccount[10];
, What is method overloading?
✓✓~~ two methods in the same class that have the same name but different signatures (ex:
int calc(double n1, int n2) and int calc(int 1, int n2))
Use the following full array x:{4,8,5,1,6,3,2}
a. What is the value given by x[1]?
b. What is the value given by x[6]?
c. What is the value given by x[7]?
d. What is the value given by x.length?
✓✓~~ a. 8
b. 2
c. ArrayIndexOutOfBounds
d. 7
Write a for-loop to double each element in the array x given in the aray
x:{4,8,5,1,6,3,2}
✓✓~~ for(int i = 0; i<x.length; i++) {
x[i] *= 2;
}
What is a static variable?
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