Developing Java Applications with NetBeans http://www.netbeans.org

Creating a new Project

Different kind of projects

The general project

Adding a new Java Class to the Project Produces this result

We can delete everything and leave just the following package javaapplication1; Name of the project public class Main { Name of the class (file) public static void main(String[] args) { this is to mark the beginning of the instructions of the program } This marks the end of the program } This marks the end of the class

Compiling the application

Running the Application

The Output field

Compilation Errors

Changing the properties of the project

Adding classes from an external jar file

Selecting the file

The file containing the new classes will be added during compilation and execution

Telling the compiler to “import” a certain class from the jar file At the top of the program you have to write import <package>.Console; Package is the name of the pacakge containing the classes (in this case, JConsole) package javaapplication1; import JConsole.*; public class Main { public static void main(String[] args) { Console c = new Console(); for (int i = 1; i <= 10; i++) for (int j = 1; j <= 10; j++) c.println(i+“ * “+j+” = “+i*j); }

For more programs you just need to add classes to the project

And give the name of the new class