Last week, one of my colleague told me that there is some compilation error in his project, while I checked mine, I have no problem, then quickly I found the problem: I am using JDK 1.6, while he is using 1.5. The culprit is a method from String class isEmpty(), which is a total new method at JDK 1.6, this incident prompts me to think if there is way to quickly find out the changes between different JDK.
I found this link , which shows differences between between 5.0 fcs and 6 Beta.
1.6
1.7
