BestTechVideos: Tag java Videos

Using Java (GWT) with Google App Engine

vojko — Tue, 15 Apr 2008 19:20:13 GMT

Since Google App Engine (GAE) announcement many developers are wondering when/if Google App Engine will support Java. As we already know GAE currently supports only Phyton. Do Java developers have to wait for Java support in GAE? In my opinion, no.

Two parts screencast shows how to run GWT application on Google App Engine.

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JRuby: The power of Java and Ruby

scoundrel — Wed, 02 Apr 2008 17:59:50 GMT

Google Tech Talks
February, 28 2008

Speaker: Ola Bini
I work for ThoughtWorks Studios, and recently published the book Practical JRuby on Rails at APress. I'm very interested in Artificial Intelligence, Lisp, Ruby and the fuzzy lines between languages...

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Browse the archive of posts filed under Conferences, Companies, Development, Techtalks, Sun, Google, Java, Ruby, Lectures

Azul's Real-Time Profiling & Monitoring (RTPM) Tool

scoundrel — Sun, 09 Mar 2008 14:14:20 GMT

Google Tech Talks
February, 13 2008

ABSTRACT

I present an unscripted live demo of RTPM, Azul's profiling & monitoring tool (meaning: I'll take suggestions from the audience on what buttons to push during the demo). JVM's routinely collect a lot of very useful information internally and the Azul engineers were long frustrated that this information was not readily available outside the VM: with RTPM it now is.

Azul works with some of the largest Java programs around. We routinely debug performance problems in programs with hundreds of running threads (not just runnable threads) using garbage-collected heaps with 100's of gigabytes. RTPM is a big selling point with our customers, and our secret weapon for telling you what your program is doing.

Always-on (low overhead) everything
All stats viewable from standard web browers
Contended monitors, i.e. "hot locks" - and call stacks for
threads blocked on the lock
Live counts of all sys-calls, i/o, file caches, RPC's, native calls
Live stats on GC: heap size, GC cycle times, generation sizes,
app pause times, app allocation rates, etc
Live stats of live stuff in the heap;
Aggregate "points-to" on all heap objects. Suspect a leak? By
looking at the suspicious objects' points-to data you can quickly
zero-in on the root of the leak.
Live hot-code profiling
JIT asm dumps, annotated with live hardware perf counters
Live stack traces of running threads (in 1-line-per Java call
format, or 1-line-per-Java-local)
"Peek" into the live heap, much like a debugger can - straight
from live stack trace dumps
Surf around the loaded class hierarchy, or the JIT'd code or all
HotSpot flags or...
Works with 1000's of runnable threads
Works with 100's of Gigabyte heaps

Speaker: Cliff Click (Azul Systems)

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Object Capabilities for Security

scoundrel — Tue, 25 Dec 2007 20:23:38 GMT

Google Tech Talks
November, 30 2007

ABSTRACT

Existing systems often do a poor job of meeting the principle of least privilege. I will discuss how object capability systems and language-based methods can help address this shortcoming. In language-based object capability systems, an object reference is treated as a capability; unforgeability of references ensures unforgeability of capabilities; and all privileges are expressed as capabilities in this way. This makes it possible to decompose the system into distrusting "privilege-separated" components, providing each component with the least privilege it needs to do its job; to reason about the privileges and powers available to various program elements, often in a local (modular) way; and to avoid common pitfalls, such as confused deputy and TOCTTOU vulnerabilities.

I will attempt to introduce the audience to some work in this area that is perhaps not so widely known, and I will describe some work in progress to construct a subset of Java, called Joe-E, that is intended to enable capability-style programming using a programming syntax that is familiar to Java programmers.

Speaker: David Wagner
David Wagner is an Associate Professor in the Computer Science Division at the University of California at Berkeley with extensive experience in computer security and cryptography. He and his Berkeley colleagues are known for discovering a wide variety of security vulnerabilities in various cellphone standards, 802.11 wireless networks, and other widely deployed systems, and he has published two books and over 90 peer-reviewed scientific papers. David is a founding member of the ACCURATE center on electronic voting. He is active in the areas of systems security, cryptography, and electronic voting.

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How to: Google Android in Eclipse

vojko — Mon, 17 Dec 2007 02:22:22 GMT

The Android platform is a software stack for mobile devices. In this two-part screencast you are going to see how to install and use the Android SDK to develop simple Android application using the Java programming language and Eclipse IDE plugin.

First screencast shows how to install SDK, configure Eclipse plugin and run sample Android applications. Second tutorial covers new project creation in Eclipse, use of Android emulator, content model, permissions and navigation model.

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Tutorial: Achieve Rapid Application Development with Seam+Eclipse+Tomcat

TechieExchange — Sun, 11 Nov 2007 21:07:07 GMT

Hi,
I wrote a step-by-step screencast tutorial to make Seam development as RAD - Rapid Application Development with Eclipse and Tomcat, focussing on developer productivity.

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Eclipse and Java: Using the Debugger

dextercowley — Fri, 09 Nov 2007 08:51:03 GMT

This free video tutorial will teach you how to use the Eclipse Java Debugger. It is based on Eclipse version 3.3. This is for programmers who have completed the "Total Beginners" tutorial or have some familiarity with Eclipse and Java. No prior experience with the Eclipse Debugger is needed.

The 7 lessons are each about 15 minutes long and total about 1 3/4 hours. The lessons guide you through a step-by-step process of running debug sessions, setting breakpoints, stepping through a running program, and examining variables and expressions. Then we use this knowledge to fix some bugs in our code.

We use the "personal lending library" application developed in the "Total Beginners" tutorial. Each lesson is fully narrated. Along the way, we learn some very cool Eclipse functionality. See the Tutorial Companion Guide for more information about the tutorial, or look at the Lessons link to see the lesson outlines.

We learn how to debug programs written using test-driven development, running debug sessions using the JUnit testing facility in Eclipse. We also learn to debug standard Java programs. The lessons are designed for you to work side-by-side, pausing and rewinding the video as needed.

Click here to view Lesson 1. Click here to download any of the lessons. Be sure to download the Tutorial Companion Guide (PDF format).

The tutorials use Eclipse version 3.3 (Europa), released June 2007.

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A first look at Eclipse Rich Ajax Platform (RAP)

vojko — Tue, 16 Oct 2007 18:12:56 GMT

Eclipse Rich Ajax Platform (RAP) allows developers to create Rich Internet Applications (RIA) using the OSGi standard component model. The main advantage of this technology is the ability to share the same Java code base for RCP and RIA applications.

In this two-part screencast you are going to see RAP installation process, look and feel of the RAP 1.0 Demo application and creation of the simple RAP plugin.

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Railscast: Complex Forms Part 2

scoundrel — Mon, 15 Oct 2007 17:12:14 GMT

See how to use Javascript and RJS to add and remove form fields dynamically. This episode will build upon the previous episode allowing you to create any number of tasks in one form the same time a project is created.

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GWT RPC in Eclipse

vojko — Thu, 11 Oct 2007 16:06:40 GMT

In this screencast tutorial you are going to see how to use the Google Web Toolkit Remote Procedure Calls. This tutorial covers creation of a simple GWT RPC project in Eclipse IDE.

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