Principles and Practice of Programming in Java最新文献_第8页

Lazy argument passing in Java RMI Java RMI中的延迟参数传递

Principles and Practice of Programming in Java Pub Date : 2008-09-09 DOI: 10.1145/1411732.1411750

Christopher Line, K. R. Jayaram, P. Eugster

引用次数: 2

Constraint based optimization of stationary fields 基于约束的稳态场优化

Principles and Practice of Programming in Java Pub Date : 2008-09-09 DOI: 10.1145/1411732.1411746

Ian Rogers, Jisheng Zhao, C. Kirkham, I. Watson

{"title":"Constraint based optimization of stationary fields","authors":"Ian Rogers, Jisheng Zhao, C. Kirkham, I. Watson","doi":"10.1145/1411732.1411746","DOIUrl":"https://doi.org/10.1145/1411732.1411746","url":null,"abstract":"In many scenarios a field holds a value that is constant beyond a certain point in the execution of the program. However, Java only allows it to be marked as being final in relation to the control-flow of the program. We present a language extension whereby the programmer can express that a field will have an unchanging value once it satisfies a given constraint. That is the constraint is the guarantee of finality as opposed to the particular code region. A field holding an unchanging value is said to be stationary. The resulting change of the language has similar pitfalls to keywords that express immutability in a dynamic system. However, it provides a number of advantages: ability for improved partial evaluation and specialisation in dynamic compilation, simple inspection to show thread safety and richer information to the runtime environment.\u0000 We present an implementation of our proposed language extension to Java in the Jikes Research Virtual Machine (RVM). We use class loading as a case study of where lazy initialisation occurs. In code that is frequently executed the probability of a referenced class being uninitialised is less than 1% for method accesses and for fields typically 0%. We create an optimization framework that uses this information to perform specialisation and partial evaluation. We demonstrate that on average 61.32% of accesses occur to fields in their stationary state. We demonstrate that stationary information allows optimizations achieving a best case 3.90% speedup of benchmark applications, and 1.67% speedup on average.","PeriodicalId":169989,"journal":{"name":"Principles and Practice of Programming in Java","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127321402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

The JavaFest: a collaborative learning technique for Java programming courses JavaFest: Java编程课程的协作学习技术

Principles and Practice of Programming in Java Pub Date : 2008-09-09 DOI: 10.1145/1411732.1411734

Matthias Hauswirth, Dmitrijs Zaparanuks, A. Malekpour, Mostafa Keikha

引用次数: 11

Aspect weaving in standard Java class libraries 标准Java类库中的方面编织

Principles and Practice of Programming in Java Pub Date : 2008-09-09 DOI: 10.1145/1411732.1411754

A. Villazón, Walter Binder, Philippe Moret

引用次数: 35

A framework for command processing in Java/Swing programs based on the MVC pattern 基于MVC模式的Java/Swing程序命令处理框架

Principles and Practice of Programming in Java Pub Date : 2008-09-09 DOI: 10.1145/1411732.1411738

A. Naderlinger, J. Templ

引用次数: 3

Measuring the performance of interactive applications with listener latency profiling 使用侦听器延迟分析测量交互式应用程序的性能

Principles and Practice of Programming in Java Pub Date : 2008-09-09 DOI: 10.1145/1411732.1411751

M. Jovic, Matthias Hauswirth

{"title":"Measuring the performance of interactive applications with listener latency profiling","authors":"M. Jovic, Matthias Hauswirth","doi":"10.1145/1411732.1411751","DOIUrl":"https://doi.org/10.1145/1411732.1411751","url":null,"abstract":"When Java developers need to improve the performance of their applications, they usually use one of the many existing profilers for Java. These profilers generally capture a profile that represents the execution time spent in each method. The developer can thus focus her optimization efforts on the methods that consume the most time. In this paper we argue that this type of profile is insufficient for tuning interactive applications. Interactive applications respond to user events, such as mouse clicks and key presses. The perceived performance of interactive applications is directly related to the response time of the program.\u0000 In this paper we present listener latency profiling, a profiling approach with two distinctive characteristics. First, we call it latency profiling because it helps developers to find long latency operations. Second, we call it listener profiling because it abstracts away from method-level profiles to compute the latency of the various listeners. This allows a developer to reason about performance with respect to listeners, also called observers, the high level abstraction at the core of any interactive Java application.\u0000 We present our listener latency profiling approach, describe LiLa, our implementation, validate it on a set of micro-benchmarks, and evaluate it on a complex real-world interactive application.","PeriodicalId":169989,"journal":{"name":"Principles and Practice of Programming in Java","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129384148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 28

Intersection types in Java Java中的交集类型

Principles and Practice of Programming in Java Pub Date : 2008-09-09 DOI: 10.1145/1411732.1411757

Martin Plümicke

引用次数: 2

Searching the library and asking the peers: learning to use Java APIs on demand 搜索库并询问同行:学习按需使用Java api

Principles and Practice of Programming in Java Pub Date : 2007-09-05 DOI: 10.1145/1294325.1294332

Y. Ye, Yasuhiro Yamamoto, K. Nakakoji, Yoshiyuki Nishinaka, Mitsuhiro Asada

{"title":"Searching the library and asking the peers: learning to use Java APIs on demand","authors":"Y. Ye, Yasuhiro Yamamoto, K. Nakakoji, Yoshiyuki Nishinaka, Mitsuhiro Asada","doi":"10.1145/1294325.1294332","DOIUrl":"https://doi.org/10.1145/1294325.1294332","url":null,"abstract":"The existence of large API libraries contributes significantly to the programming productivity and quality of Java programmers. The vast number of available library APIs, however, presents a learning challenge for Java programmers. Most Java programmers do not know all the APIs. Whenever their programming task requires API methods they do not yet know, they have to be able to find what they need and learn how to use them on demand. This paper describes a tool called STeP_IN_Java (a Socio-Technical Platform for In situ Networking of Java programmers) that helps Java programmers find APIs, and learn from both examples and experts how to use them on demand. STeP_IN_Java features a sophisticated yet easy-to-use search interface that enables programmers to conduct a personalized search and to progressively refine their search by limiting search scopes. Example programs are provided and embedded to assist programmers in using APIs. Furthermore, if a programmer still has questions about a particular API method, he or she can ask peer programmers. The STeP_IN_Java system automatically routes the question to a group of experts who are chosen based on two criteria: they have high expertise on the particular API method and they have a good social relationship with the programmer who is requesting the information.","PeriodicalId":169989,"journal":{"name":"Principles and Practice of Programming in Java","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129554765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 21

The potential of trace-level parallelism in Java programs Java程序中跟踪级并行性的潜力

Principles and Practice of Programming in Java Pub Date : 2007-09-05 DOI: 10.1145/1294325.1294348

Borys J. Bradel, T. Abdelrahman

引用次数: 9

A cross-language framework for developing AJAX applications 用于开发AJAX应用程序的跨语言框架

Principles and Practice of Programming in Java Pub Date : 2007-09-05 DOI: 10.1145/1294325.1294340

A. Puder

引用次数: 13