Compile Error: “Not a statement”

java

Solution

Because the raw `i` in the first position of your `for` is not a statement. You can declare and initialize variables in a `for` loop in Java. So, I think you wanted something like

// int i = 1;
for(int i = 1; ;i++ )
{
    System.out.println(i);
}

If you need to access `i` after your loop you could also use

int i;
for(i = 1; ; i++)
{
    System.out.println(i);
}

Or even

int i = 1;
for(; ; i++)
{
    System.out.println(i);
}

This is covered by JLS-14.4. The `for` Statement which says (in part)

A for statement is executed by first executing the ForInit code:

If the ForInit code is a list of statement expressions (§14.8), the expressions are evaluated in sequence from left to right; their values, if any, are discarded.

Problem

``` public class Hello { public static void main(String args[]) { int i = 1; for(i; ;i++ ) { System.out.println(i); } } ``` } I would like to understand why above code is giving error as: not a statement for(i ; ; i++)

Original source