java programming questions?

Question

can someone help me with these homework questions

1. The equal sign ( = ) in Java is a command for assignment.

a. True
b. False

2. In Java, everything on the right side of an equal sign ( = ) is evaluated, or completed, first before assigning the value to the variable on the left side of the equal sign.

a. True
b. False

3. Each variable in Java must must be declared and initialized.

a. True
b. False

4. Write the Java import statement necessary to gain access to the Scanner class.

5. In Java there is a BIG difference between the single equal sign ("=") and the double ("==").

a. True
b. False

Answer 1

1. a)

2. a)

3. a)

5. a)

Answer 2

1. (a)



2. (a)



3. (b)



4.

import java.util.Scanner;

or alternatively:

import java.util.*;



5. (a)



For 3, I answered (b) because, as far as I know, you only need to initialize a variable if you actually use it somewhere. You are, however, free to declare variables and never initialize them if they are never used.

Answer 3

1) a

2) a

3) b - it's good practice to initialise a variable, but you don't have to

4) import java.util.Scanner;

5) a

Answer 4

1-a

2-a

3-b

4-import java.util.*;

5-a