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From: Eric Sosman <esosman@comcast-dot-net.invalid>
Newsgroups: comp.lang.java.programmer
Subject: Re: Can't use block of statements as 'incrementer' in for loop?
Date: Wed, 14 Feb 2018 11:34:55 -0500
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On 2/14/2018 11:01 AM, Robert Spanjaard wrote:
> When you create a for loop, you provide an initialisation statement, a 
> condition, and a continue statement. Usually this continue statement is 
> an incrementer or decrementer, but basically it can be any statement.

     "Expression," not "statement."

> [...]
> Now, the same tutorial says "A block is a group of zero or more 
> statements between balanced braces and can be used anywhere a single 
> statement is allowed." (*2)
> 
> But when I replace the single haha-printing statement with any kind of 
> block, the compiler produces an error message:
> 
> ForDemo.java:3: error: illegal start of expression
>        for (int i=1; i<11; { i++; i++; }) {
>                            ^

     Right.  The brace-enclosed stuff is a block, hence a statement,
but the `for' requires an expression -- not a statement -- in the
third spot.

-- 
esosman@comcast-dot-net.invalid
One thousand seventy-one days to go.