Campbell Ritchie wrote:. . . but don't forget that every class implicitly extends Object if you don't specify another superclass with extends.
Les Morgan wrote:. . . A sub class is any class that is derived from an existing class: so see "extends".
Veena Pointi wrote:Below is explanation of OCA by Jeanne Boyarsky and Scott Selikoff for sequence of executiong of for statement
1.Initialization statement executes
2.If booleanExpression is true continue,else exit loop
5.Resturn to step 2
So you see i=0 happens only once.As per this explanation both code blocks above should output same thing that is print 1 2 3 4 . Why in case of infinite loop , i is being initialized to 0 everytime and why not in other case?
Tim Moores wrote:Just found this little post about a newly introduced problem with backward compatibility: https://www.symphonious.net/2019/02/04/fun-with-java-backwards-compatibility/
That kind of thing didn't used to happen.
Tim Holloway wrote:This is the annoying thing about commercial software today, and one of the biggest reasons why I avoid commercial software as much as possible.
Commercial vendors like IBM, Oracle, and the like used to provide a lot of support for the admittedly astronomical sums they charged. When we had an Amdahl mainframe, Amdahl actually set up a local office right in our building. IBM had a whole building by themselves (and a very good Arabic sandwich shop on the ground floor).
But when we adopted OS/2, it was almost impossible to get support for it. And every time we found a good IBM support person, they ended up leaving IBM soon after. I was frustrated, because I'd bought my first Linux distro for the princely sum of $35 for 2 CDs and I could get more assistance from both the Linux OS itself and from online forums than I could get from Fortune-50 IBM for OS/2.
So IBM, Oracle, et. al., went to horrible phone queue systems with under-qualified software support (this is when the cliché phrase "Have you tried turning it off and back on again?" appeared), and the preferred support channel is to go to their forum system, which typically is getting half its help from unpaid volunteers and which rarely comes up to the quality of the wholly-volunteer sites like JavaRanch or open-source product forums.
If I'm going to pay tons of money, I think I expect something better. Or I might as well not bother. Most of what Oracle can do for me I can do with PostgreSQL. And probably a few things Oracle can't. Commercial products these days are designed by marketing droids and implemented almost entirely by cheap offshore labor. Open-source projects are usually done by people who actually believe in what they are doing and are generally better-skilled as well.