How To Install bcel on CentOS 7

In this tutorial we learn how to install bcel on CentOS 7. bcel is Byte Code Engineering Library

Introduction

In this tutorial we learn how to install bcel on CentOS 7.

What is bcel

The Byte Code Engineering Library (formerly known as JavaClass) is intended to give users a convenient possibility to analyze, create, and manipulate (binary) Java class files (those ending with .class). Classes are represented by objects which contain all the symbolic information of the given class byte code instructions, in particular. Such objects can be read from an existing file, be transformed by a program (e.g. a class loader at run-time) and dumped to a file again. An even more interesting application is the creation of classes from scratch at run-time. The Byte Code Engineering Library (BCEL) may be also useful if you want to learn about the Java Virtual Machine (JVM) and the format of Java .class files. BCEL is already being used successfully in several projects such as compilers, optimizers, obsfuscators and analysis tools, the most popular probably being the Xalan XSLT processor at Apache.

We can use yum or dnf to install bcel on CentOS 7. In this tutorial we discuss both methods but you only need to choose one of method to install bcel.

Install bcel on CentOS 7 Using yum

Update yum database with yum using the following command.

sudo yum makecache

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

sudo yum -y install bcel

Install bcel on CentOS 7 Using dnf

If you don’t have dnf installed you can install DNF on CentOS 7 first. Update yum database with dnf using the following command.

sudo dnf makecache

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

sudo dnf -y install bcel

How To Uninstall bcel on CentOS 7

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

sudo dnf remove bcel

References

Summary

In this tutorial we learn how to install bcel on CentOS 7 using yum and dnf.