This means the memory is freed automatically after the method with the stack allocated object returns and the garbage collector doesn't have to manage the object. Normally, each object is created on the heap, but if the object doesn't escape the method, as it's not returned by the method and not used by other methods, then the JVM could use something similar to automatic stack allocation of the object instead of allocating it on the heap.
Java Web Start (JWS) was deprecated in Java 9, and starting with Java 11, Oracle removed JWS from their JDK. The feature may be enabled, on Microsoft Build of OpenJDK 11 and 17, by supplying the following JVM flags: -XX:+UnlockExperimentalVMOptions -XX:+ReduceAllocationMergesĮscape analysis is performed by the Java runtime, or more specifically the JIT compiler, in order to detect objects which are used exclusively inside a method. Run JNLP files with the latest Java version.
Currently the feature is only available for Microsoft Build of OpenJDK, but might become part of OpenJDK in the future. Microsoft announced an experimental feature, still under development, which improves the performance of escape analysis by increasing the opportunities for scalar replacement.
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