I currently have the following code for java.
public class lesson8
{ static Console c; // The output console public static void main (String[] args) { c = new Console (); String user; int length, counter, spacecounter; spacecounter=0; c.print("Enter a string. "); user = c.readLine(); length = (user.length()-1); for (counter=0;counter<length;counter++) { if (user.charAt(counter) = "") { spacecounter++; } } c.println("There are "+spacecounter+" spaces in your string."); c.println("There are "+counter+" characters in your string."); // Place your program here. 'c' is the output console // main method }
}I am getting an error on this part:
if (user.charAt(counter) = "") The error is
The left-hand side of an assignment must be a variable.
I changed it to "==", but now I get another error:
The type of the left sub-expression "char" is not compatible with the type of the right sub-expression "java.lang.String".
How would I solve this?
Thanks!
05 Answers
So, the reason why
if (user.charAt(counter) = "") gives that error is that "=" is an assignment operator in java, and so the left-hand side must be a variable. That being said, you probably actually want
if (user.charAt(counter) == ' ')which uses the comparison operator (==) and the space character (' '). ("" is an empty string)
You are using an asignment over a comparison operator.
Change
if (user.charAt(counter) = "") to
if (user.charAt(counter) == "") Update:
You also have an error at comparison again.
You should also use single quotes ( ' ) to compare a char, otherwise it won't get compiled.
if (user.charAt(counter) == '') But this too will not get compiled as a zero length char is not defined.
You should be comparing a valid character, say ' ' for space.
You want to use the equality operator ==, not the assignment operator = .
"==" is going to make sure that the value to the right is the same as the variable to the left.
"=" is an assignment operator and is used to give value TO the variable, rather than compare it.
I got same error in my code. Adding parenthesis solved this error
Changed from
if(isNotNullorEmpty(operator)) ArrayList<String> result = getOperatorAndTypeforName(name );to
if(isNotNullorEmpty(operator)){ ArrayList<String> result = getOperatorAndTypeforName(name );
}
