#Main method shortcat in entellij code
#Main method shortcat in entellij windows

#Main method shortcat in entellij code

I'll choose the Main Configuration and after a moment, my Java code is compiled and executed and the Run window opens at the bottom of the screen and I see the output: Hello from IDEA! So now, I can make changes to my code and execute it again. If I had created a project that didn't come from a template, the first Run menu choice would have been disabled and I would've had to choose this one which creates something called a Run Configuration and when you choose that menu choice, you'll see a list of new or proposed Run Configurations. That isn't always true in an IntelliJ IDEA project. To run the application, I'll go to the menu and choose Run and notice that I have two menu items that say Run, one that says Run. I'll be using this feature quite a bit later on in the course but for now, I'll ignore it. Whenever you see this little lightbulb over on the left, that indicates that there might be some help available. It's being saved for me as I type and I'm getting all sorts of hints and help as to how I can improve the code. I'm going to be using this version so I'll press the down arrow a few times and choose it and then I can type in a ' character and again IDEA is helping me out by closing the quoted string with a closing double quote character and I'll say, 'Hello from IDEA!' Now in IntelliJ IDEA, I don't need to explicitly save my code.

The PrintStream and I'll start typing print and then ln and I see that there are many versions of the println method, that it subs various values as arguments, booleans, characters, doubles, objects, and strings. And now I see methods that are members of the out object.

We'll talk about PrintStreams much later in the course but for now, I'll just select it and then press the. But when I type out, I see that this is an object, something called a PrintStream. , I see a list of elements that I can choose from the System class and this will start with a list of methods that are members of the class. Then I can press enter or return to select it. I'll type the beginning of the System class name: Sys and I see a list displayed of all the different classes that start with that string. As before, I'll use but I'll go through this slowly to show how IntelliJ IDEA will help you code. I have a class named Main and it has a main method in line 5 and any code that I want to execute should go right here where the comment says, 'write your code here.' I'll delete that comment and then I'll output a message. So here's exactly the same sort of code that I showed previously. Then I went to the Editor category, then General, to Appearance and I checked Show Line Numbers here and clicked OK.

#Main method shortcat in entellij windows

I went to the File menu and I chose Settings on Windows or Preferences on Mac. Here's how I set that up in IntelliJ IDEA. You'll also notice that I have line numbers being displayed on the left. I'm going to maximize this window so we can see it more clearly. But when the setup process is complete, you should see this display with the project window on the left and the editor on the right. Down at the bottom of the screen, you'll see a message saying Indexing and you'll need to wait until that's complete before you follow along with the next steps. Now if this is the first time you've done this in IntelliJ IDEA, your display won't look exactly like mine. I'm told that this project file directory doesn't exist and I'll click OK to create it and create the Java code. And then I'll click Finish to create the project. When you do this through IntelliJ IDEA, you'll add this base package declaration to the Java code but you'll also create the equivalent folder hierarchy to store the class. I'll use the same package that I used previously:. So this folder will be the root folder for this project. And then I'll append to that the name of the project, IDEAProject. I'll browse and I'll go to my Desktop, to my Exercise Files, to the subfolder for this video 03_04. On this screen, I'll set the name of the project to IDEAProject and then I'll change the project location. That'll create a Java class that has a main method just like the Java class I created previously. And on this screen, I'll select the option to create a project from the template Command Line App. I'll choose Java as the type of the project and I'll set my project SDK to 1.8, the SDK that I defined when I installed IntelliJ IDEA. In the Intellij IDEA welcome screen, I'll click Create New Project. As I've shown previously, you can code in a simple text editor and compile and run your Java classes from the command line but most Java developers use integrated development environments or IDEs and I'll be using IntelliJ IDEA.