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Let's discover together the #java21 Unnamed Classes preview.

Goal: Evolve the Java language so that students can write their first programs without needing to understand language features designed for large programs. Far from using a separate dialect of Java, students can write streamlined declarations for single-class programs and then seamlessly expand their programs to use more advanced features as their skills grow.

Before:
class HelloWorld {
void main() {
System.out.println("Hello, World!");
}
}

After:
void main() {
System.out.println("Hello, World!");
}

0:00 intro vvauban
0:11 Java 21 Unnamed classes
0:48 Downloading JDK21
1:30 Installing JDK21
3:48 Discovering Unnamed classes
4:44 Inside IntelliJ
6:54 Using IntelliJ terminal
7:54 Running Unnamed Class
8:29 Final Words
8:46 Udemy Java Certification QR code


Download Java 21
https://jdk.java.net/21/

Install Java 21
https://www.theserverside.com/blog/Co...

Define unnamed class
https://openjdk.org/jeps/445

Learn Java:
https://www.udemy.com/course/ocp-orac...