How To Install ecj on Fedora 34

ecj is Eclipse Compiler for Java

Introduction

In this tutorial we learn how to install ecj on Fedora 34.

What is ecj

ECJ is the Java bytecode compiler of the Eclipse Platform. It is also known as the JDT Core batch compiler.

We can use yum or dnf to install ecj on Fedora 34. In this tutorial we discuss both methods but you only need to choose one of method to install ecj.

Install ecj on Fedora 34 Using dnf

Update yum database with dnf using the following command.

sudo dnf makecache --refresh

The output should look something like this:

Fedora 34 - x86_64                               20 kB/s | 6.6 kB     00:00
Fedora 34 openh264 (From Cisco) - x86_64        1.4 kB/s | 989  B     00:00
Fedora Modular 34 - x86_64                       68 kB/s | 6.5 kB     00:00
Fedora 34 - x86_64 - Updates                    3.5 kB/s | 6.2 kB     00:01
Fedora Modular 34 - x86_64 - Updates             17 kB/s | 5.9 kB     00:00
Metadata cache created.

After updating yum database, We can install ecj using dnf by running the following command:

sudo dnf -y install ecj

Install ecj on Fedora 34 Using yum

Update yum database with yum using the following command.

sudo yum makecache --refresh

The output should look something like this:

Fedora 34 - x86_64                               20 kB/s | 6.6 kB     00:00
Fedora 34 openh264 (From Cisco) - x86_64        1.4 kB/s | 989  B     00:00
Fedora Modular 34 - x86_64                       68 kB/s | 6.5 kB     00:00
Fedora 34 - x86_64 - Updates                    3.5 kB/s | 6.2 kB     00:01
Fedora Modular 34 - x86_64 - Updates             17 kB/s | 5.9 kB     00:00
Metadata cache created.

After updating yum database, We can install ecj using yum by running the following command:

sudo yum -y install ecj

How To Uninstall ecj on Fedora 34

To uninstall only the ecj package we can use the following command:

sudo dnf remove ecj

ecj Package Contents on Fedora 34

/usr/bin/ecj
/usr/share/java/ecj
/usr/share/java/ecj/ecj.jar
/usr/share/java/ecj/javax15api.jar
/usr/share/licenses/ecj
/usr/share/licenses/ecj/about.html
/usr/share/man/man1/ecj.1.gz
/usr/share/maven-metadata/ecj.xml
/usr/share/maven-poms/ecj
/usr/share/maven-poms/ecj/ecj.pom

References

Summary

In this tutorial we learn how to install ecj on Fedora 34 using yum and dnf.