This can lead to performance gains in the execution speed, unless methods are executed less frequently. When using a JIT compiler, the hardware can execute the native code, as opposed to having the JVM interpret the same sequence of bytecode repeatedly and incurring the penalty of a relatively lengthy translation process. To improve performance, JIT compilers interact with the JVM at run time and compile appropriate bytecode sequences into native machine code. Interpreting the bytecode which is the standard implementation of the Java Virtual Machine (JVM) makes execution of programs slow. These bytecode can be interpreted, compiled to native code or directly executed on a processor whose Instruction Set Architecture is the bytecode specification. The way bytecodes get converted to the appropriate native instructions for an application has a huge impact on the speed of an application. The key of java power "Write once, run everywhere" is bytecode. Nothing in the JVM affects performance more than the compiler, and choosing a compiler is one of the first decisions made when running a Java application-whether you are a Java developer or an end-user. : 0Īt .(BasicDiagnosticFormatter.java:116)Īt .(BasicDiagnosticFormatter.java:184)Īt .(BasicDiagnosticFormatter.java:100)Īt .(AbstractDiagnosticFormatter.java:114)Īt .(RichDiagnosticFormatter.java:112)Īt .(RichDiagnosticFormatter.java:67)Īt .(Log.java:434)Īt .(Log.java:400)Īt .(Log.java:373)Īt .processing.JavacProcessingEnvironment$Round.showDiagnostics(JavacProcessingEnvironment.java:1045)Īt .(JavacProcessingEnvironment.java:1170)Īt .(JavaCompiler.java:1108)Īt .(JavaCompiler.java:824)Īt .(Main.java:439)Īt .(Main.java:353)Īt .(Main.java:342)Īt .(Main.java:333)Īt .pile(Main.java:76)Īt .Main.main(Main.He Just-In-Time (JIT) compiler is a component of the Java Runtime Environment that improves the performance of Java applications at run time.
Include your program and the following diagnostic in your report. Please file a bug at the Java Developer Connection () after checking the Bug Parade for duplicates. (processingEnv.getMessager().printMessage(Kind.NOTE,"\n") Įxpected result is that an empty line should be printed during annotation processing.Īn exception has occurred in the compiler (1.7.0_15). Inside process method, try printing an empty line STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :ġ. It turns out that .util.BasicDiagnosticFormatter splits the string by "\n" and assumes that there is at least one element in resulting array.
When doing annotation processing in a subclass of AbstractProcessor, printing only string "\n" throws exception for array out of bounds. Java(TM) SE Runtime Environment (build 1.7.0_15-b03)
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