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Stefano Locati

Lucid Imagination » Don't Use Java 7, For Anything - 1 views

www.lucidimagination.com/...dont-use-java-7-for-anything

java java7 programming

shared by Stefano Locati on 31 Jul 11 - No Cached
  • In case you upgrade to Java 7, remember that you may have to reindex, as the unicode version shipped with Java 7 changed and tokenization behaves differently (e.g. lowercasing).
  • Unfortunately it contains hotspot compiler optimizations, which miscompile some loops. This can affect code of several Apache projects. Sometimes JVMs only crash, but in several cases, results calculated can be incorrect, leading to bugs in applications
  • Stefano Locati on 31 Jul 11
     
    Unfortunate first major release under Oracle stewardship.
Baron M

Java Developers Leery of IBM-Sun Merger - 0 views

www.eweek.com/...-Leery-of-IBMSun-Merger-411968

java

shared by Baron M on 01 Apr 09 - Cached
  • Java must advance into the new world of the cloud and big developer productivity.
  • Java will become a legacy platform.
  • slow down innovation
  • ...10 more annotations...
  • It would certainly bring us down to two major players on the Java side: IBM and Oracle.
    • Baron M
      Baron M on 01 Apr 09
       
      this is damn TRUE!
  • IBM likes to create these 'boil the ocean' kinds of solutions
    • Baron M
      Baron M on 01 Apr 09
       
      this is the GENERAL PRACTICE of IBM and Oracle
  • IBM could wind up having six different JVM [Java Virtual Machine] implementations
    • Baron M
      Baron M on 01 Apr 09
       
      I like this example... and most likely, this would happen if IBM buys SUN
  • it's a good thing for Sun to get out of the doldrums
  • Every time IBM has bought a company that was in a leadership position, that company seems to have lost market share
    • Baron M
      Baron M on 01 Apr 09
       
      sad but it's a fact...
  • JCP for behaving like a "Russian commissar.
  • Although many have lost faith in the JCP, this is one area where a new steward could really breathe new life into Java
  • the speediest when it comes to keeping their Java technologies up-to-date
  • hold back innovation in support of their own client needs
  • server market would become a bit tighter and that playing field would be altered as well
abuwipp

How to tame java GC pauses? Surviving 16GiB heap and greater. | Javalobby - 0 views

java.dzone.com/...how-tame-java-gc-pauses

jvm gc performance tuning gb heapsize ram

shared by abuwipp on 28 Jun 11 - No Cached
  • abuwipp on 28 Jun 11
     
    Deep information about how to use multiple GBs of RAM with Java
Rinav G

JavaBlogging » What is serialVersionUID? - 2 views

www.javablogging.com/what-is-serialversionuid

java Serializable serialVersionUID

shared by Rinav G on 09 Nov 10 - Cached
  • private static final long serialVersionUID = 1L
  • and it is still there even after the program finished. Let’s see if we can read that file once again, this time without creating it first.
  • Now, let’s see what happens, when we change the serialVersionUID value and try to deserialize once again our file. Change the line 2 in the class SerializeMe so that serialVersionUID contains now 2 instead of 1:
  • ...13 more annotations...
  • serialVersionUID = 2L;
  • static final
  • Exception in thread "main" java.io.InvalidClassException:
  • As you can see, this time the deserialization didn’t go well. ObjectInputStream complained about the serialVersionUID being changed.
  • How does he know that it changed? If serialVersinUID is static, then it should not have been serialized in the first place, and there should be no information about the previous value 1 during the deserialization, right? Well, serialVersionUID is an exception to the rule that “static fields don’t get serialized”.
  • Moreover, if there is no serialVersionUID officially declared in the class to be serialized, compiler automatically adds it with a value generated based on the fields declared in the class.
  • The deserialization of that object does not necessarily have to occur exactly after serialization. It can occur after a few months or on a completely different JVM
  • there is a chance that the class declaration has changed between serialization and deserialization.
  • It checks if the data read from the input stream is compatible with the current definition of the class.
  • when the visibility of a field changes, the serialVersionUID changes too.
  • sometimes you just want for some reason to forbid deserialization of old serialized objects,
  • you might tend to write it once for every serializable class ( or have it generated by the IDE ) and forget about it. WRONG !!!
  • If you write it once and don’t take care to update it when necessary, you loose all the merits of serialVersionUID.
  • Rinav G on 09 Nov 10
     
    What is serialVersionUID? What is it Used For???
anonymous

How Offshore Java Development Companies Create 2D Game In Java ME - 0 views

technohub2.webnode.com/...nies-create-2d-game-in-java-me

Java Development vendors

shared by anonymous on 23 Mar 15 - No Cached
  • anonymous on 23 Mar 15
     
    With this article, we are going to provide you a quick introduction to Java ME development tools used by offshore Java Development vendors to create MIDlet. Java ME contains small JVM and a set of Java APIs that are used for developing mobile applications. So let's start and create your first mobile app with perfection.
mikhail-miguel

Java Virtual Machine - All about JVMs - 0 views

java-virtual-machine.net

shared by mikhail-miguel on 12 Jul 23 - Cached
  • mikhail-miguel on 12 Jul 23
     
    Unread
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