![how to run a bluej program how to run a bluej program](http://www.mathcs.emory.edu/~cheung/Courses/170/Syllabus/02/BlueJ/FIGS/0/bluej33.gif)
- #How to run a bluej program how to#
- #How to run a bluej program code#
- #How to run a bluej program windows#
How to install BlueJ Make sure you have JDK installed first before downloading and installing BlueJ otherwise it will not work. You can use any valid identifier (an identifier can't have spaces and can't start with a numberįinally, our first BlueJ class has been compiled and run. BlueJ can run run on Windows, MacOS, Linux or any platforms which runs java. If you've used Jeroo this is the same as the name of the Jeroo.
#How to run a bluej program windows#
On Windows and MacOS, a program named BlueJ is installed. There will be a prompt asking you for the instance name. This tutorial is an introduction to using the BlueJ programming environment.
![how to run a bluej program how to run a bluej program](https://images.g2crowd.com/uploads/attachment/file/36442/BlueJ_Screenshot-2.png)
#How to run a bluej program code#
We must now 'compile' our source code into bytecode. Now that we are done writing our code, let's close the the editor.Add the following line of code inside the Constructor of HelloWorld. Now, let's add the code that will print out Hello World when we run the program. Just ask anyone in the AP class! Here's what my version of BlueJ has as the default code of each class. Now, if you've never programmed before, you may see a lot of daunting looking stuff! Eventually though, what you are looking at below will seem quite familiar and not daunting at all. To do so, right click on the "HelloWorld" icon and select 'Open Editor' It uses the OpenJDK 11 compiler to compile code.
![how to run a bluej program how to run a bluej program](https://www.cs.kent.ac.uk/people/staff/djb/co320/getting-started/public-pc-setup-pics/1.png)
The Java text editor also supports taking input from the user and standard libraries. Now let's actually start programming!. The user friendly Java online compiler that allows you to Write Java code and run it online."Helloworld" is just as valid of a classname but " Hello World" is NOT a valid clas name. You cannot have a blank space in the name of a class. By convention class names start iwth a capital letter though Java does not require this. Not surprisingly, the way that you create a new class is to click on the "new class" button!.
![how to run a bluej program how to run a bluej program](https://www.cs.utexas.edu/users/scottm/images/305j/BlueJP7.jpg)
The blank document with the turned corner represents the project: Your screen should now look like this picture.