IntelliJ has great support for debugging many languages. Let's debug our String Reversal utility as an example.Īs with most IDEs, we can add a breakpoint on any line of our class from the editor by clicking on the side panel: We'll also pass a String – “ baeldung“ , in this case – as a Program Argument to our application.Īnd, while we won't demo this here, we can also configure JVM options and environment variables, too, for our application.Ĭontrary to temporary run configurations, IntelliJ saves this configuration and allows us to execute it any time with a click of a button. It needs to have a main method for this to work. Here, we specify the name of our class to run in Main Class.
We'll do that using the “ Edit Configurations” window from the Run Navigation bar ( Run->Edit Configurations): So, we can create a permanent Run/Debug Configuration.
However, since we have to pass a String to our StringReversal application as a program argument (the args part), a temporary run configuration won't work. IntelliJ will then create a temporary Run configuration. Firstly, we can simply run Ctrl + Shift +F10 or Control + Shift + R/D from the main class. Now, there are 2 approaches for running this main method in IntelliJ. In the next section, we'll use this library and execute a simple Java program.
#Intellij mouseless portable#
Of course, remember that adding a library this way is IntelliJ-specific and not as portable as more robust options. It's convenient, though, for simple projects. Along with that, it also adds it to the project classpath. IntelliJ will now download the commons-lang3.jar into a specified folder. And of course, if no repository is configured, it will search the Maven Central. Normally, the common source for any external library is the Maven Repository. Hence, IntelliJ allows us to download it directly from any pre-configured Maven repository. In order to add the library, we must download it first. Both global and project specific libraries can be added by accessing the Project Structure dialog ( File->Project Structure). Like the JDK settings, we can also configure libraries at global and project level. Global libraries are shared by all projects. Let's say we want to use the StringUtils API from the commons-lang3 library.
#Intellij mouseless how to#
And while Maven and Gradle are the typical go-tos for managing this, let's take a look at how to do this natively in IntelliJ. A Java project usually depends on a lot of external or third-party libraries.
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