for-loops in java

Question

If I have the following code, what will the integer "i" be equal to after it executes? Does a loop increment after a break statement?

int i = 0;
for(int foo = 0; foo < 10; foo++,i++){
    break;
}

Answer 1

After a for loop finishes one iteration it executes the incrementor code (in your case foo++,i++). Since your loop breaks before it finishes one iteration neither foo nor i increments.

Answer 2

You can actually look this up in the standard. A for loop with a break, by definition, is like a while, goto, as so:

for( init; test; incr){
   break;
}

is

init
while(test){
   // do things
   goto end
   incr
}
end:

So, since the break is always executed, it never hts the increment part, and neither foo nor i will be incremented.

Answer 3

Why don't you put a println and see...

I'm going to say it ends up with what you started (i.e., zero -- the increment happens after the code in inside the for executes -- since you break out of it, it never gets to increment).

Answer 4

It prints 0, which is exactly what you should expect it to print. The post increment clause is executed after the code block, but we are breaking in the middle of the code block. So the post increment is never executed.