incomparable types: char and String

[becks]

Hello,

please I have a java code that reads from file. I want to use while loop to pick each character at a time into an array for further computation but I get this message 'incomparable types: char and String'. what does it mean?

[
for (int i = 0; i < bFile.length; i++) {
	       	System.out.print((char)bFile[i]);
            }
 
	    System.out.println("Done");
        }catch(Exception e){
        	e.printStackTrace();
        }
        while (((char)bFile[i])!="")   ....//here gives the error
       {
         
      }

]

[chaarmann]

You should compare only same with same. That means char with char or string with string.
The ' ' is an empty space written as character, the " " is an empty space written as string. And "" is an empty string, holding no character at all!
So you need to change your line 10 to

while (((char)bFile[i])!=' ')

That will execute the while loop until a space is found.

Remark: if you intended to loop until next line, you should have used '\n'. If you want to loop until end of string, you must use the length of the array "bFile.leng th" as maximum value, starting from 0.