Java Programming Concepts and Practice

1. Chapter 2 Review Questions

2. Find correct Answer • Every complete statement ends with a _____. • The data 72, ‘A’, “Hello”, 2.17 are examples of ______. • A group of statements, such as the contents of a class or a method, are enclosed in ______. • The keyword used to declare a constant is ______

3. Find correct Answer • The characters //, /* or /** are used to mark the beginning of a _____. • The method in Scanner class used to read a string is ______. • The method in Scanner class used to read an integer is ______. • The class used to display dialog boxes is ______

4. Find correct Answer • A variable must be declared before it can be used. True or False? • Variable names may begin with a number. True or False? • A left brace in a Java program is always followed by a right brace later in the program. True or False? • The value of variable declared with the final keyword can not be changed. True or False?

5. Convert pseudocode to Java code • Store 20 in the speed variable. • Store 10 in the time variable. • Multiply speed by time and store the result in the distance variable. • Display the contents of the distance variable.

6. Convert pseudocode to Java code • Store 172.5 in the force variable. • Store 27.5 in the area variable. • Divide area by force and store the result in the pressure variable. • Display the contents of the pressure variable.

7. Write program • Write a program that declares the following: • A String variable named name • An int variable named age • A double variable named salary • Store your name, age and salary in these variable. The program then displays a message similar to the following: My name is Hoa, my age is 26 and I hope to earn $300 per month.