In Java

1. Assume that we have defined a class named MyClass. MyClass has a default constructor. Please write the code snippet to declare a variable called myClass1 and assign a new object to it.

2. Write a class named MyClass with the following members:

a private instance variable of double type called "value";

a default constructor that give a default value 0 to the variable "value";

a parameterized constructor that assign a parameter to the "value" instance variable as its initial value;

3. Write a class called Coordinates with:

1. two instance variables: x and y as double

2. a default constructor that initialize x and y as 0

3. corresponding mutators and accessors for both x and y

4. Assume that we have a class called MyClass. MyClass has a (non-static) method called giveMeAValue() that will give an arbitrary integer value when called. Assume that we have created an object named myClass1 of the MyClass type.

Write the code to print a line of text to the screen like:

I have a value which is XX!

Replace XX with the value that the giveMeAValue will return.

5. State whether the following are primitive types or reference types:

-double

-string

-char

-integer

-scanner

-int

6. Assume we have a method called in the main method like this:

System.out.printf("The num or words is %d.", numOfWords(text));

Please write the definition line (aka, signature of method, first line of a method definition) of the method numOfWords. Make the best guess of the types.

Hint: static or non-static?

7. Please check correct statements about wrapper classes.

Question 7 options:

	- Some advanced Java data structures only works with objects so wrapper classes have to be used to replace the - primitive types.
	- Wrapper class can carry useful methods related to the corresponding wrapper class.
	- To check if two wrapper class variables has same values, you should use .equals() or .compareTo() rather than ==
	- Wrapper class variables can be used in most expressions same way as their primitive type counterparts.