JProfiler 4.2 版本發布了JProfiler是一個全功能的Java剖析工具（profiler），專用於分析J2SE和J2EE應用程式。它把CPU、線程和記憶體的剖析組合在一個強大的應用中。JProfiler可提供許多IDE整合和應用服務器整合功能。JProfiler直覺式的GUI讓你可以找到性能瓶頸、抓住內存泄漏(memory leaks)、并解決多線程的問題。它讓你得以對heap walker作資源回收器的root analysis，可以輕易找出內存泄漏；heap快照（snapshot）模式讓未被引用（reference）的對象, 稍微被引用的對象、或在終結（finalization）序列的對象都會被移除；整合精靈以便剖析瀏覽器的Java外掛功能。新版本提供的特性:Support for additional platforms. A snapshot comparison facility has been addedThe objects comparison shows the difference between the 'all objects' views or the 'recorded objects' view of two snapshotsTo see the difference between the hot spots view of two snapshots, you can create a hot spots comparisonIn the call tree comparison, the difference tree of the call tree views of two snapshots is displayedFinally, the VM telemetry comparisons show graphs of VM telemetry measurements with a series of snapshots on the X axis