The Profiler can be used to find memory leaks, inefficient temporary-storage issues, CPU bottlenecks, and unit test performance regressions. Use the Profiler to test and improve the performance of Java applications, applets, servlets, JavaBeans, Enterprise JavaBeans (EJBs) and JavaServer Pages (JSPs). The Memory Profiler provides real-time display of all classes used by the test program and of the number of allocated instances. The CPU Profiler displays test results for each thread or thread group for pure CPU use or for elapsed time (pure CPU and inactive phases).

The Thread Debugger displays real-time threading information for Java applications, applets, and JavaBean components. See how the program uses computer resources, as well as identify thread contentions, thread starvation, excessive locking, and deadlocks. Thread Debugger provides automatic thread and monitor usage reports that help developers prevent deadlocks and other thread issues before they occur.

Request Analyzer provides CPU performance analysis of Java EE protocols. Developers can use Request Analyzer to obtain precise drill-down information about performance bottlenecks in any one of JDBC, JNDI, CCI, RMI, EJB, JSP, JMS, or WSVC protocols. This tool also provides protocol-specific quality analysis of unclosed resources, exceptions, and other potential issues.

Code Coverage allows developers to determine the exact lines of source code being executed. In real time, you can view how frequently each class, method, and line of code is executed. Code Coverage supports testing of applications, applets, servlets, JavaBeans, Enterprise JavaBeans (EJBs), JavaServer Pages (JSPs), and virtually any other Java code. With Code Coverage, you can easily spot and remove dead code from applications, improving quality and reducing the footprint of an application.

J Optimizer의 Audit/Metrics 기능을 사용하면 소프트웨어 개발 중에 일반적으로 마주치게 되는 코드 품질, 코드 리뷰 및 코드 종속성 문제를 해결할 수 있습니다. J Optimizer의 Audit/Metrics 기능은 개발자가 개발 프로세스 초기에 코드 문제를 찾아내 해결할 수 있도록 설계되었습니다. J Optimizer의 Audit 기능은 소스 코드를 정적으로 분석하여 잠재적 경합 조건, 확인되지 않은 예외와 같은 코딩 문제를 식별합니다. JBuilder의 Metrics 기능은 이와 비슷한 방식의 분석을 통해 프로젝트에서 설계 문제를 식별합니다.

The J Optimizer Agent enables profiling of Java applications running on remote servers, while displaying performance data in the console running on the developer's desktop. The profiling agent works with either the Java Virtual Machine Profiler Interface (JVMPI) or Java Virtual Machine Tool Interface (JVMTI).

Snapshots are binary files that capture all the data from a particular test run. Snapshots can be opened for analysis in the product that generated it, such as Profiler, Code Coverage, or Request Analyzer.

Progress Tracker enables developers to continuously monitor and measure the impact of performance changes by allowing them to compare visual snapshots of their progress. Developers can compare Profiler, Code Coverage, and Request Analyzer Snapshots, and generate reports in PDF and HTML format.

J Optimizer supports profiling of Java applications running on today's most popular commercial and open source application servers including BEA WebLogic Application Server, IBM WebSphere, JBoss, Oracle Application Server, Apache Geronimo, Apache Tomcat, and Sun GlassFish.

Developers have the option to install the J Optimizer touch point plug-in into an existing Eclipse or Eclipse-based product and make it profile-ready. The touch point plug-in enables developers to launch applications with profiling enabled in their preferred Eclipse-based IDE, and then attach to it from J Optimizer, leveraging its power for performance analysis and optimization.