abt java versions?

Question

i am using jdk 1.3 for my practice.
what is the tiger version(is it jdk 1.5 or jdk 5.0)
also i gets confused with jdk ,sdk, j2se runtime
what is the difference between java runtime environment and java development kit

Answer 1

You can use the jdk5.0 ,both jdk1.5 and jdk5.0 are same till jdk5.0 they were using as jdk1.4.0,so they just started use simple names as it is go on developing new version now jdk6.0 is laso came.
sdk is for all softwares not only for java that is software development kit,so jdk for java kit i.e java development kit.
You need to use jdk which comes in j2se sdk(whole bundle).
Java run time is the JVM(java virtual machine) for java to run java class .It won't have any compiler it is just a virtual operating system.
JDK=Jre+java compiler+library files+other useful .exe files

Java have 3 editions
J2se=java 2 standard edition
j2ee=java2 enterprise edition
j2me=java2 micro edition(for wireless applns)

If you or just writing standard applns use j2se .

Answer 2

1.5 and 5.0 are the same. Java went 1.0 -> 1.1 -> 1.2 -> 1.3 -> 1.4 -> 1.5, and around that point they realized that the releases were pretty much major releases instead of minor ones, so they renamed 1.5 to 5.0.

JDK and JSDK are the same -- they're slightly different names (JDK = older name, JSDK = newer one) for the standard edition Java development kit. It includes everything you need to compile and run Java.

J2SE Runtime will run Java but does not come with the compiler. It stands for "Java 2 Standard Edition" -- it's included with the development kit so you don't have to download it separately. SE contrasts with EE (Enterprise Edition) and ME (Mobile edition - used for cell phones and such).