Dalang is a re ective extension for standard Java. It extends the re ective API to include behavioural re ection as well as introspection. It di ers from some other re ective Java implementations in that it requires no change, either to the Java Virtual Machine or the Java system classes. We outline the implementation of Dalang Java, evaluate it, describe our approach to addressing problems wit...

This document provides a tutorial introduction to Java annotations called SelfTest. The SelfTest annotations allow one to annotate Java classes with test data, and the SelfTest annotation processor generates executable JUnit test classes from annotated Java classes by translating test cases to executable JUnit tests. The SelfTest annotations not only automate unit testing of Java classes signif...

With most of today's fast scienti c software written in Fortran and C, Java has a lot of catching up to do. In this paper we discuss how new Java programs can capitalize on high-performance libraries for other languages. With the help of a tool we have automatically created Java bindings for several standard libraries: MPI, BLAS, BLACS, PBLAS, ScaLAPACK. Performance results are presented for Ja...

As an objected-oriented programming language and a platform-independent environment, Java has been attracting much attention. However, the trade-off between portability and performance has not spared Java. The initial performance of Java programs has been poor, due to the interpretive nature of the environment. In this paper we present the communication performance results of three different ty...

The Java dialect Java Card for programming smartcards contains some features which do not exist in Java. Java Card distinguishes persistent and transient data (data stored in EEPROM and RAM, respectively). Because power to a smartcard can suddenly be interrupted by a so-called card tear, by someone removing the smartcard from the reader, Java Card provides a notion of transaction to ensure that...

Java bytecode subroutines are used to compile the Java source language try-finally construct into a succinct combination of special-purpose instructions. However, the space saved by using subroutines, in comparison to simpler compilation strategies, comes at a substantial cost to the complexity of the bytecode verifier and other parts of the Java Virtual Machine. This paper examines the trade-o...

The Lambada framework provides facilities for fluid interoperation between Haskell (currently both Hugs and GHC using non-Haskell98 extensions) and Java. Using Lambada, we can call Java methods from Haskell, and have Java methods invoke Haskell functions. The framework rests on the Java Native Interface (JNI). The Lambada release includes a tool for generating IDL from Java .class files (using ...

during a survey of sindh and punjab provinces of pakistan, two dragonfly genera were collected and identified for the first time from the country. anaciaeshna(family aeshnidae) is a genus of large dragonflies. representatives were collectedfrom gujjo, district thatta (sindh) in august 2008 and were identified as anaciaeshna jaspidea (burmeister). the second genus was epophthalmia (family cordul...

The rising interest in Java for High Performance Computing (HPC) is based on the appealing features of this language for programming multi-core cluster architectures, particularly the built-in networking and multithreading support, and the continuous increase in Java Virtual Machine (JVM) performance. However, its adoption in this area is being delayed by the lack of analysis of the existing pr...