There's a new release of IntelliJ IDEA three times a year. See the highlights of the current release with this list of tips, or see What's New for more detailed information.
Use a lightweight inspection profile on commit
Fully customise the checks you must perform before you commit your changes to version control
Data flow analysis
Data flow analysis is always being improved to show us potential errors in our logic.
Preview HTML updates in real time
See what your changes look like as you make them
Evaluate JSON Path expressions
Use IntelliJ IDEA to check if your JSON Path expression are correct.
Prevent a package depending upon another
Enforce architecture rules, such as data access layers not depending upon UI layers.
Generate UML diagrams for your Kotlin code
JVM developers working with Kotlin code can create UML diagrams for their Kotlin classes, just like they could with Java classes
Run your code with Docker, SSH or WSL
Set a Run Target to change where your code runs
Profile your application
See how your application is performing with the built-in profiler
Change your code font weight
We spend hours looking at our code. We can make this as pleasant as possible.
Tips for working with JetBrains Space
Space is an all-in-one collaboration tool, including chat, code repository, code review, issue tracking, and much more.
Code Reviews with Space
Perform code reviews without leaving the IDE.
Create Record
Create a new Java record class
Convert class to record
Use inspections to convert classes to Java 16 records
Convert from Record
Use quick intentions to convert a record to a class
Use Pattern Matching for instanceof
Inspections can guide us to use new Java features
Press ⌥⏎ (macOS) or Alt+Enter (Windows/Linux) and choose "Replace with pattern variable".
public class PatternMatchingSwitch {
void outputValueInUpperCase(Object obj) {
if (obj instanceof String) {
String s = (String) obj;
System.out.println(s);
}
}
}You can press ⌥⏎ (macOS) or Alt+Enter (Windows/Linux) and choose "Replace 's' with pattern variable".
public class PatternMatchingSwitch {
void outputValueInUpperCase(Object obj) {
if (obj instanceof String s) {
System.out.println(s);
}
}
}Identify and fix deprecated calls
IntelliJ IDEA will warn you if you're using deprecated methods, and they will be shown with a strikethrough if they're marked for removal
Use new methods on the Streams API
Inspections can show us new features from Java 16
Turn on Preview Features to try new Java features
The latest versions of Java contain "Preview Features", features that are fully functional but require developer feedback. Try them out in IntelliJ IDEA.
Create a correct parent Sealed Class
Sealed types are a new idea for Java developers, let IntelliJ IDEA guide you in how to use them
Create a correct child Sealed Class
Sealed types are a new idea for Java developers, let IntelliJ IDEA guide you in how to create child classes