Introduction to Java using NetBeans
Section 1 : An Introduction to NetBeans and Java
What is Java?
JAVA is a high-level programming language developed by Sun Microsystems. Java was originally called OAK, designed for handheld devices, but was unsuccessful. In 1995 Sun changed the name to Java and modified the language to take advantage of the burgeoning World Wide Web.
Java is an object-oriented programming language. Object-oriented programming is a way of writing programs with the common theme that the program is a collection of objects that work together to perform the task at hand. Each object is a collection of data and methods that manipulate the data to perform required tasks. You will learn more about object-oriented programming as the course progresses.
Open a New Project
Name the Project and Set the Location to your K:Drive
The function: System.out.println( );
The function System.out.println( ); takes letters (strings) or values (numbers) as a parameter and displays it on the screen (anything inside of the ( ) is displayed). You can display more than one string or numeric by joining them together using the "+" operator.
System.out.println("Hello " + "how are you today");
This code will print out the phrase "Hello how are you today" on the screen by joining the two strings together into one line of output.
System.out.println("Your age is " + 21);
This code will print out the phrase "Your age is 21" on the screen by joining the string and the numeric together into one line of output.
Printing special characters using the System.out.println(); function:
Certain ASCII characters that are difficult to represent in a string either because they are not viewable (like an enter key) or because they are part of the formatting of strings in Java (like a " or a ' or a \ ) may be displayed using an ASCII character code or control code.
Shown below is a chart listing of some common control codes:
If you wanted to print the phrase Go "SENS" Go (quotes around SENS) on the screen, you would use the code:
System.out.println("Go \" SENS \" Go");
If you wanted to print GO on one line, SENS
on another line and Go on a third line you could use the code:
Assignment 1.1 BingoCardProgram
Create a BingoCard application that displays a traditional bingo card with five columns of five unique numbers. The column labels are B, I, N, G, O. Column b contains numbers from 1 to 15, column I 16 to 30, column N 31 to 45, column G 46 to 60 and column O 61 through 75.
B I N G O
2 20 42 60 64
14 25 32 55 70
5 18 FREE 53 67
12 16 31 46 75
10 22 39 59 71
Assignment 1.2 RectangleProgram
Create a Rectangle application that displays a rectangle of asterisks (*). The rectangle should be 15 * wide and 7 * high. You must use printf and not simple type a bunch of spaces.
Assignment 1.3 TicTacToeProgram
Create an application that displays a tic-tac-toe board with an X in the center.
Assignment 1.4 SmileProgram
Create an application that displays a smiling face made of keyboard characters. You must have a circular outline and at least eyes, nose, mouth.
Assignment 1.5 GioPizzaProgram
Create an application that displays the menu shown below. (Note: You will be expanding on this assignment in a later section)
Posting your work
1. Upload the Java Projects to your Gravelle Folder (Share with me only) and put a link for each assignment on your website.
2. Upload your code to your Gravelle Folder and embed on your site
3. Take a screenshot of your console output and embed on your site
JAR files which are executable java files do not work on projects without a display so we will not use them in this assignment.