Java awt Exercise 3: CONTROL FLOW STATEMENTS

Java awt Exercise 3: CONTROL FLOW STATEMENTS

JAVA EXERCISE - CONTROL FLOW STATEMENTS SAMPLE 1: Write a Java program to input an integer from keyboard. Loop this process until the inp... 9 years ago

JAVA EXERCISE - CONTROL FLOW STATEMENTS

SAMPLE 1: Write a Java program to input an integer from keyboard. Loop this process until the input integer is a prime.

SOLUTION:

Create Project Baitap3Demo, names Main class as Main, choose Finish.

Create a new class, named BaitapMau:

Click button 

Open BaitapMau.java, create default constructor BaitapMau(), and add following code:

The content of function PrimeCheck(int) as follows:

Open Main.java, create an instance of the class BaitapMau:

Press F6 to run project.

SAMPLE 2: Write a class to help a shop for product description. The shop's product includes information: productId, productName, productPrice. Create 3 instance of the built class and display to the screen.

SOLUTION:

-          Create a class named Product:

-          Create the content for Product as follows:

-          Press Alt + Insert, choose Constructor, and press Enter.

-          In Generate Constructor window, choose 3 fields and press Generate.

-          Press Alt + Insert, choose toString().., and press Enter. Click the button Generate.

-          Class Product will have content as follows:

-          Open Main.java, create 3 instances and run project with F6.

EXERCISES:

1. Write a program to solve equation Ax² + Bx + C = 0. A, B, C are entered from the keyboard.
2. Write a program to find a number abc which sastify the formula: abc = a³ + b³ + c³.
3. Write a program to find the greatest common divisor (ước số chung lớn nhất - USCLN) of two number A and B. A, B are entered from the keyboard. Suggest: Loop the process A - B (if A>B) or B - A (if B > A) until A = B.
4. Create a class Student, to descript a group of students which have information as: Full name, student id, GPA. Create 3 instance of the class Student and display the information to the screen.