1st Six Weeks

Question 0

When drawing a program, what are the variables called?

Answer 0

STATE

Question 1

Name the primitive data types.

Answer 1

byte, int, long, short, char, boolean, float, and double

Question 2

When drawing a program, what are the methods called?

Answer 2

BEHAVIOR

Question 3

How do you write a main method?

Answer 3

public static void main(String[] args){

Question 4

What does a byte contain?

Answer 4

A byte contains numbers between -128 to 127. Ex: 76

Question 5

What does an int contain?

Answer 5

An int contains numbers between -2,147,483,648 to 2,147,483,647. Ex: 838,382

Question 6

What does a short contain?

Answer 6

A short contains numbers between -32,768 to 32,767. Ex: -16,392

Question 7

What does a long contain?

Answer 7

A long contains numbers between -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807. Ex: 477,838,383

Question 8

What does a boolean contain?

Answer 8

A boolean contains the values of true and false.

Question 9

What does a double contain?

Answer 9

A double contains numbers with decimals. Ex: 10.8

Question 10

What does a float contain?

Answer 10

A float contains numbers that are decimals. One must put a lower case f at the end to indicate that the variable is a float. Ex: 78.4f

Question 11

What does a char contain?

Answer 11

A char contains any character, surrounded by single quotes. Ex: ‘%’

Question 12

What does int stand for?

Answer 12

Integer

Question 13

What does char stand for?

Answer 13

Character

Question 14

How does one instantiate a reference type?

Answer 14

Ex: Puppy puppy1 = new Puppy();

Question 15

How does a void method look like?

Answer 15

Ex: public void copper{
System.out.println(“Hi”);
}

Question 16

How does one begin a driver program?

Answer 16

Ex: public class DogDriver{

Question 17

What is a mutator method?

Answer 17

A mutator method is used to set a value of a private field. It follows a naming scheme prefixing the word “set” to the start of the method name.

Question 18

Define an accessor method.

Answer 18

An accessor method is used to return the value of a private field. It follows a naming scheme prefixing the word “get” to the start of the method name.

Question 19

What is a toString method?

Answer 19

The toString method returns a string that “textually represents” an object.

Question 20

Write a value returning method.

Answer 20

public char symbol(){
return ‘^’;
}

Question 21

What is a modifier?

Answer 21

A modifier is a keyword placed in a class, method or variable declaration that changes how it operates.

Question 22

What is a variable?

Answer 22

Variables are “containers” for storing information.