The Java development team has made advanced researches in the programming language Java. Now, let’s talk about a Java application which has got the opportunity to modify an agent depending on the target application. Let’s discuss the implementation of an advanced agent by using of the bytecode manipulation tool called as byte buddy. There is certainly a question, as to why byte buddy?
Well, in many cases, a Java agent comes with the manipulation of application properties which is about configuring a certain environment state. Every Java agent is linked with the Java source code. Only the condition is that the premain condition is always the same. As we come to know about the ‘PREMAIN’ condition, we get to know that this method is executed before any other method of the target application. There are certainly no rules in writing of the Java program, but you need to maintain the eccentricity of very program. Talking about a Java agent, it receives a minimal set of optional argument. So, in order to launch your class, there should always be agent classes and resources reserved. Let’s discuss about a Java agent scenario.
A Java agent has got the potential to handle much stuff all together. It’s all about altering the state of an application environment. But, a Java agent can be considered to provide access to the Java implementation APIs which is definitely helping in modification of the code. This feature offers a manipulation of Java virtual machine which itself is a powerful tool helping in the implementation of the aspect-oriented programming. Talking about a Java agent, it is far more compatible in altering the state of the application’s environment. But, it cannot provide access to the Java instrumentation API. These types of modifications can help the Java APIs to alter the state of application by using the code for target application. This indeed is one of the best things; you can get from the APIs that helps in adding a second parameter to the agent’s premain method. It is always possible to enhance or even modify a class’s behavior.
Well, well, well, a class file in Java class is always in its compiled state. A class file contains a byte code which itself is a representation of certain bytecodes adding chronologically in the program. The JVM doesn’t have a notion in the programming language, but helps in the processing of the bytecode. This indeed is one of the best thing, we come to know. It also helps in compiling of the programming languages for even better causes. This in turn doesn’t affect the context of the code manipulation. Every Java bytecode has a simple abstraction of small operations which itself can complied with little efforts. It helps in execution of little program with the help of stack machines. These are one of the small operations which are processing values as small values in the stack machines.