Java Development can bring forth many issues and aspects at times of advanced coding for running JVM. In this blog, weare going to discuss techniques of injecting codes into running JVM through Java instrumentation and attaching instrumentation agent. The java.lang.instrument.Instrumentation class in Java Development can be used to inject code in running JVM through the following methods.
The simple steps of this method allows easy execution through mouse click. In addition to the other features of this method, the proper functioning of the steps does not depend on the location of the application or on the graphical resolution settings. This method helps in the automation of all kinds and forms of Java based applications as long as, prior to the launch of the application the variable Java_Tool_Options is set with the value javaagent:”<PATH TO JAVAAGENT>”. The range of the variable can differ according to the requirement of the application. However, the drawbacks of this methodmay include the dependency of the method on the additional permission granting step,that is required for the socket connection to be established. Alsofor the application, there are a lot of permission granting steps that increase the restrictions of this method.
More capabilities and features will be announced by Oracle soon. Aegis Java development team will keep you posted for more new features of upcoming Java EE8 and introduces enhancements to GlassFish Server Open Source Edition.
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