Type mismatch: cannot convert from int to boolean in while loop

问题

I just started learning java, tried to find the answer but I guess I'm not smart enough. I'm trying to write an array which I got from some file into another file.

The problem is when I'm trying to make "while" it's saying cannot convert from int to boolean. Can anyone suggest something. Thank you in advance. This is what I have :

public void savethefile() throws IOException{

File file1= new File("lala.ppm");
FileWriter save=new FileWriter(file1);
save.write(tytul);

while(i){
    save.write(arraycomment[i]);
    i++;
}

save.close();

回答1:

Presumably i is an int, not a boolean. Unlike C/C++, this won't be converted to a boolean implicitly. You must explicitly state your condition as a boolean.

while (i < arraycomment.length) // or some other constant

来源：https://stackoverflow.com/questions/22923164/type-mismatch-cannot-convert-from-int-to-boolean-in-while-loop