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Java in General (beginner)

Java in General (beginner) No question too simple or small . . .

Java versions?


I'm totally confused as to the different versions of Java..I was told that in order to perform a certain task I need to have Java 2 1.5 installed.. I have couple of questions..Is Java 2 1.5 an outdated version? if so, what is the latest update for that particular product?Is Java 2 1.5 = J2SE 5?What is the difference between JRE 6 update 3 and J2SE 5?Thank you in advance..

   
   

   
   
      As Suntried to explain, "Both version numbers '1.5.0' and '5.0' are used to identify this release of the Java 2 Platform Standard Edition." So yes, 1.5 is basically the same as 5.0, and 1.6 is the same as 6.0.The current version of the Java 2 SE (Standard Edition) developer's kit is JDK 6 Update 4. (SeeSun's Java SE download page.) If you require Java 1.5, then Java 1.6 should also work fine.The differences between Java 5 and 6 are fairly minor (at least from a beginner perspective). SeeWhat's New in Java SE 6.[ January 28, 2008: Message edited by: marc weber ]--------------------"We're kind of on the level of crossword puzzle writers... And no one ever goes to them and gives them an award." ~Joe Strummer

   
   

 
   
      Hi Marc..thank you for your help..I was told that I need Java 2 1.5 on my computer..however, I recently downloaded Java..I checked the version it says (version 6 update 3) ..but it is called JRE 6..What is confusing me is that they have different names ..: JRE 6 update 3..then another one JDK 6 update 4..Which of those would be comparable to Java 2 1.5 or J2SE 5?What is the difference between JRE 6 and JDK 6 ?Thanks..

   
   

   
   
      Don't use the JRE if you are developing code. Use the JDK; as Marc Weber has told you, the most recent version is JDK6u4.Any code which works on Java5 will work on JDK6.Remember to record or write down the name of the folder you install the JDK into; you will need that information for setting the PATH on your computer.

   
   

   
   
      JRE is a "Java Runtime Environment," which is used torunJava programs.JDK is a "Java Development Kit," which is used mainly tocompileJava source code into bytecode.So if you're a programmer writing your own Java code, then you need the JDK. But if you're just running a Java application, then all you need is the JRE.Either way, Java 6 is back compatible with Java 5, so you should be fine using version 6. You just wouldn't want to use a version that's lower than 5.[ January 28, 2008: Message edited by: marc weber ]--------------------"We're kind of on the level of crossword puzzle writers... And no one ever goes to them and gives them an award." ~Joe Strummer

   
   

 
   
      Thank you so much for your help..I'm no programmer ...I'm basically computer illiterate...LOL

   
   

   
   
      quote:Originally posted by Maggie Jackson:...I'm no programmer ...I'm basically computer illiterate...LOLIn that case, the links I provided above are probably more than what you need.Java.comis geared more towards end users.If you're not programming, it sounds like you will be fine with JRE 6 (and you won't have to worry about the JDK, updating your PATH variable, etc.).--------------------"We're kind of on the level of crossword puzzle writers... And no one ever goes to them and gives them an award." ~Joe Strummer

   
   

 
   
      Thank you so much Marc..I'm definitely an end user..

   
   

 
   
      Hi..I installed the latest Java version 6 update 3..however, when I try to access/run a java program I get this error message:- Couldn't initialize tubesock: Unable to communicate with applet after 5 attempts -What should I do now?

   
   
   
 
   
      What does "access/run a java program" mean? Whatexactlyare you doing?--------------------BlogLearn something new on the Java platform: Scheme Prolog

   
   

 
   
      Java version 6 update 3 is no longer the latest; update 4 has been released a few weeks ago.--------------------More Than Meets The EyeSCJP 1.4 100%SCJP 6.0 91%working on SCWCD 1.4

   
   

 
   
      Hi and thanks for your help..I want to view things that need Java..Here is the situation:-When I click Start---> Programs :  Java is not listed at all..-When I click Tools ---> Internet options ----> advanced : "use Java (the old version)" is checked..the new version is not listed at all..-When I click Start ---> Control Panel ----> add and remove programs : both versions are listed ..when I tried to remove the old version I got this error message: the InstallShield Engine (iKernel.exe) could not be launched. Class not registeredPlease let me know how I can correct this problem ...thanks

   
   

   
   
      Java is not a program that you start. It is more like a "platform" that runs in the background when you launch a program that uses Java. So you will not see "Java" listed under the Start menu.To verify what version you are using, go toJava.comand click on the "Verify Installation" button.It sounds like you're trying to run an applet in a browser. (An "applet" is a Java application that's embedded in a webpage.) And I assume you're running Internet Explorer in Windows. Are these correct assumptions?Can you tell usexactlywhat you're doing (step by step) and the complete error message you're getting? Also, do you know whether anyone else is able to run this applet successfully?--------------------"We're kind of on the level of crossword puzzle writers... And no one ever goes to them and gives them an award." ~Joe Strummer


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