About core- java, adv.java and j2ee faq's?
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There a list of java FAQs at the following.
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If you already have have a version of Java (e.g. J2S2, or JRE) open Internet options in the control panel, or if you have an Internet page open - click tools > Internet options > advanced > scroll down through the various settings look for JAVA(SUN). Make sure the box [] is checked to enable JRE, or which ever version you are running. \nIf you need the software for JAVA runtime environment (JRE)\nuse this link:\nhttp://java.com/en/download/manual.jsp\nOr, You may start here:\nhttp://java.com/en/\nto decide or reseach what you need
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Hi\n\nYou can use Tomcat Plugin(http://www.sysdeo.com/eclipse/tomcatplugin ) for developing J2EE applications in Eclipse. or install Exadel Studio (http://box.exadel.com/exadelproducts/app_products.process.main.start?_action=products ) .\n\nRegards\nAlbin Joseph\nhttp://www.javacertificate.net
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http://java.sun.com/javaee/downloads/
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The Sun java download site maintains old \nversions (see ref #1).\n\nFor example, version 1.2.2 is available for\nWindows and Solaris at:\n\nhttp://java.sun.com/products/archive/j2se/1.2.2_017/\n\nbut there are also downloads for 1.3 and 1.4
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java.sun.com\nwww.javaranch.com
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From the main java website http://java.sun.com/ what you are looking for is Java SE - which is a download containing the javac compiler, the java runtime, the class libraries and the class documentation.
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JDK1.5, also known as J2SE 5, is one of the major upgrade of Java. It is most important upgrade of Java language.\nJ2SE 5 is so important that Sun decided to say it 5 jumping from 2.\nThe new features of Java language includes small change like enhanced for loop (foreach style for loop), autoboxing-autounboxing, to major change like Generics.\nA list of new features is given below\n1. Enhanced for loop\n2. Autoboxing-AutoUnboxing\n3.Enumeration ( Java enumeration is object may have constructor and methods.This enumerating may be used with switch)\n4. Generics ( A most awaited and most important upgrade of Java language)\n5. Collection API now to Generics enabled.\n6. New way to do multithreading, Concurrent API.\n7. And many other small but significant changes.
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If J2EE was as bad as you think it is, why is it so widely used? Answer: it's not.\n\nIt's been a very long time since this technology could be accused of being generally inefficient. JIT and adaptive in-time compilers can actually recompile byte-code into assembley during runtime depending on how it's currently being used. This can produce faster execution in certain cases than C or C++.\n\nMost of the pain comes from starting the runtime, in an enterprise environment this is not an issue.\n\nPS. Remember it's just a specification. If you want to do Java just like C# (ie. compiled and ready to go as a binary), take a look at http://gcc.gnu.org/java/
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Go to tools/internet options/advanced, and take the 3 check marks out of "Microsoft VM"(Java)/apply/ok, then Tools / internet options/ advanced - \nCheck "enable third party browser extensions" \n(requires a "MUST" immediate restart) ...... Then download java.sun and Install the latest version of sun Java. \n\nJRE 1.5.0_9 available = http://java.sun.com/javase/downloads/index.jsp := http://www.java.com/en/download/index.jsp\n= http://java.sun.com/j2se/1.5.0/download.jsp\n\nthen go to tools/internet options/ advanced, and put a check mark in Java(sun)/ apply/ ok/ok/ restart. (Don't overlook both restarts) . ...... . . Also go to: tools/internet options/security/custom level/Java permissions/high or medium safety/ok/yes/ok \n\n\nClearing the Java Runtime Environment (JRE) Cache =  http://www.java.com/en/download/help/5000020300.xml\nClearing your Web Browser Cache =  http://www.java.com/en/download/help/5000020400.xml
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Assuming that you don't know C/C++, spending 5 hrs a day for around a month makes you confident in using constructs of core Java, ie., basic Java and some of frequently used APIs (programs that already developed and installed when you install JAVA) of J2SE(Java 2 Standard Edition). And, ofcourse, the duration varies depending on individual, faster you get hold on concepts, shorter time it takes. Then, depending on whether you want to be a GUI programmer (eg., Swings) or Server side prgorammer (J2EE, Java 2 Enterprise Edition) or embedded (J2ME), each domain being mostly independent of each other, that time varies.\n\nThe question is a difficult one to answer when you say just "Java". Hope the above answer gives you some idea of what it is like.\n\nhttp://java.sun.com/developer/onlineTraining/ - Tutorials link
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J2ME is java micro edition which is mostly used in portable devices and is compiled with a lot of optimisations for that. J2EE (and not JEEE which can mean something totally different) is the enterprise edition of Sun's Java Platform.
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Just go to the link below and download the latest Java SDK.\nHopefully, that would help you.
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http://java.sun.com/j2se/1.5.0/download.jsp\n\nDownload JDK 5.0 Update 6 (link)\n\ndownload from here
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Java is platform independent but JVM is NOT... for all OS we need different JVM.
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To get your feet quickly, start with tutorials.  A lot avilable in net. For good one look at the following link :\n\nhttp://java.sun.com/docs/books/tutorial/java/index.html\n\nI personally feel the following books are good to start with :\nJava Complete Reference / Core java\nWhen you by the book, dont forget to get the latest edition that address Java 1.5.\n\nA comparison on java books is available at :\n\nhttp://www.javaworld.com/javaworld/jw-05-2001/jw-0518-introbooks.html?
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I am puzzled by your claim that you posess Java 6 because the latest version of the Java Runtime Environment (JRE) that I am aware of is 1.4.2.  I suggest that you visit http://java.sun.com/j2se/1.4.2/download.html and download the JRE (it's the third option; click where you see "Download J2SE JRE").  That ought to bring your java version to the latest version if that seems to be the problem.\n\nI must admit, that I'm neither sure what the problem here is, nor why those would be conflicting with each other, nor why it was suggested that updating java might fix this, but at least executing this course of action will eliminate "wrong java version" as the source of that error.\n\nI hope that's helpful at least a bit.