import java.awt.*;
import javax.swing.*;
public class JFrameContentPane extends JFrame
{
private final int SIZE = 200;
private Container con = getContentPane();
private JButton BtnClckIt = new JButton("click it");
public JFrameContentPane()
{
super("JFrame ContentPane Layout in Java Swing Example");
setSize(500, 500);
setVisible(true);
con.setLayout(new FlowLayout());
con.add(BtnClckIt);
}
public static void main(String[] args)
{
JFrameContentPane JFrameCP = new JFrameContentPane();
}
}

output

All Java Development in the IDE takes place within Projects, we first need to create a new project within which to store sources and other project files. An IDE project is a group of JAVA Source files plus its associated metadata (data about data), including project–specific properties files, and many other related files. A Java Application may consist of one or more IDE Projects.

Step 1: Creating a new GUI application Project

Click on File option in Menu Bar or you can directly click on the New Project option in the Tool Bar or you can press Ctrl + N for starting the New Project in java.

Now, If you have click on the File Option in the Menu Bar then the Drop – Down List will appear in front of the Screen you can Select the New Project option in that Drop – Down List.
A New Project window will appear in front of your screen.

Step 2: Select the Categories as JAVA and in the Projects Select Java Application.
Step 3: Then Press the Next Button in the window.
Step 4: Enter the name of the Project “but keep in mind that while writing the name of the project space is not required. Enter the name without leaving the space.”

Step 5: Now, the Dialog Box also show where the Project is going to save by the NetBeans if you want to change the Project Location you can set it from that but by Default, all the project will save in the following location of the local computer, as follows:

C:\Users\Administrator\Documents\NetBeansProjects
// As per windows operating system
// Note: Will differ as per OS

Step 6: Then Click on the Finish Button in the window.

By now a project is created as one can conceive from the pictorial representation. By following the above mention steps you can Start the New Project in the NetBeans after this you can start the Project in the JAVA Application, JAVA Class & Web Application as per the Project / Customer Requirements.

1. Java Mobile Applications
Let’s begin by pointing out that the Android OS is closely based on Java, and that Android phones consistently garner a market share of over 85%. Add to this the fact that most mobile app developers call Java their official programming language. Java is compatible with app designing software such as Kotlin and Android Studio. Java Platform, Micro Edition (alternately called Java ME or J2ME) functions as a cross-platform framework for creating applications that work across all Java-support devices. Now take all of that and remember that mobile computing is outpacing desktop computing today, and you can see how you can’t escape Java.

2. Java Desktop GUI Applications
GUI stands for Graphic User Interface, and Java enables GUI development through resources like Abstract Windowing Toolkit (AWT), JavaFX, and Swing. AWT features several pre-made components such as button, list, menu, and several third-party components. JavaFX is composed of a set of graphics and media packages, providing Swing interoperability and 3D graphics features. Swing is a GUI widget that offers advanced elements such as lists, scroll panes, tables, tabbed panels, and trees.

Even though mobile computing dominates the market today, there is still demand out there for desktop applications, and with these tools, programmers can develop any desktop application.

3. Java Web-based Applications
Java provides high security and simple coding, two elements that attract web application developers. Servlets, Struts, and JSPs give effective support to web applications and offer the potential to develop whatever kind of programs needed. Additionally, open-source e-commerce platforms like Broadleaf makes designing e-commerce apps a simple task.

4. Java Web Servers and Application Servers
The robust Java ecosystem has given rise to numerous Java web and application servers. Web server space is home to servlets like Apache Tomcat, Project Jigsaw, and Rimfaxe Web Server (RWS). Meanwhile, servlets like WebLogic, WebSphere, and JBoss EAP have a firm foothold in the commercial application server space.

5. Java Enterprise Applications
Java Enterprise Edition (Java EE) is a popular platform that offers API and runtime environments for scripting tasks, including web services and network applications, to name a couple. According to Oracle, Java runs on 97% of enterprise-owned computers. Java is also recognized as being the foundation for many banking applications that use Java in their entire process, from front-end users to back-end servers. Lastly, Java’s capacity for sustaining high performance makes it a smart choice for high-frequency trading systems like Murex.

6. Java Scientific Applications
Science-related mathematical operations and calculations require developing apps that are extremely fast, highly secure, easily maintained, and highly portable. Java fills this need nicely. Powerful scientific applications like MATLAB rely on Java as part of the core system and interacting user interfaces.

7. Java Gaming Applications
Java and the gaming industry are a match made in heaven. Java supports the jMonkey engine, one of the most potent 3D engines available today. And 2D games are a snap too; just couple Java with CSS, and you’re good to go. So, no matter what kind of games developers are designing, Java has them covered.

8. Java Big Data Technologies
Big data is big news today, and it’s hardly surprising that Java is right there in the thick of it. Let’s start by pointing out that Hadoop, arguably the most well-known and well-used big data platform, is written in Java. Additionally, Scala, a competing programming language, owes its origins to Java. Scala was created to address some of Java’s drawbacks.

Four programming languages compete in the world of Big Data, all of them striving to be the best and most used: Java, Scala, R, and Python.

9. Java Business Applications
Big enterprises have big problems. That’s why these organizations turn to the Java EE platform to develop large-scale, multi-tiered network applications that are scalable, reliable, and secure. Java offers features that deliver a powerful app that is less complex by providing tools like a development model, API, and runtime environment. These features free up developers to concentrate more on the app’s functionality.

10. Java Distributed Applications
Distributed applications are programs that run on multiple computers linked to the same network. For example, Internet Explorer is a distributed application. These applications are split into two separate programs: client software and server software.

Distributed applications bring their unique challenges due to their distributed characteristics and the dynamic quality of the servers and systems that run them. The Java Intelligent Networking Infrastructure, or JINI for short, represents an infrastructure that provides, registers, and finds distributed services by their specifications. JavaSpaces, a JINI component, supports distribution, persistence, and object migration within a network.