January 2015
Beginner to intermediate
392 pages
8h 44m
English
Content preview from Learning Java by Building Android GamesBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 4
Q1) What is wrong with this method?
void doSomething(){
return 4;
}A) It returns a value but has a void return type.
Q2) What will x be equal to at the end of this code snippet?
int x=19;
do{
x=11;
x++;
}while(x<20)A) Okay, this was a slightly tricky question. Regardless of the value of x, the do block always executes at least once. Then x is set to 11, and after that, it is incremented to 12. So when the while expression is evaluated, it is true and the do block executes again. Once more, x is set to 11 and then incremented to 12. The program is stuck in a never-ending (infinite) loop. This code is most likely a bug.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.