Include spaces in String.toCharArray Java

Question

Can you include / interpret spaces from .toCharArray ..

Right now it skips the spaces..

    char[] first = first_string.toCharArray();

for (int x = 0; x < first.length; x++) {
        char first_letter = first[x];
 }

first_letter doesn't include the spaces ..?

The problem is almost certainly in where you're getting first_string from, not in this code. — keshlam
– keshlam, Commented Jan 12, 2014 at 0:39

Stephen C · Accepted Answer · 2017-05-15 00:35:07Z

3

You are confused. String.toCharArray() does not remove or "skip" spaces. It delivers exactly the sequence of characters as they are in the String.

The most likely problem is that the (expected) leading space is not in that string (first_string) at all. You can check by temporarily adding this line:

    System.err.println("first_string is '" + first_string + "'");

and looking at the output. Or you could use a debugger to set a breakpoint and examine the value of first_string directly.

Hints for debugging:

If your program misbehaves in a way that you can't explain / understand, then question your assumptions:

Read / reread the javadocs to check that the library methods you are using actually do what you think / remember they do.
Check that the relevant variables have the values that you think they should have.

And ... learn how to use your IDE's debugger, 'cos you will save lots of time if you can use a debugger effectively.

edited May 15, 2017 at 0:35

answered Jan 12, 2014 at 0:57

Stephen C

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1 Comment

Kon Over a year ago

+1 because, on top of the info I provided below, a good suggestion for using the debugger. This is the perfect time for @Ds. 109 to get comfortable with debugging.

woof · Accepted Answer · 2022-06-18 16:35:47Z

0

Yes, it does include spaces by default. For example,

public class Tester {
    public static void main (String[] args) {
        String temp = "This is a sentence.";
        char[] arr = temp.toCharArray();

        for (char k : arr) {
            System.out.print(k);
        }
    }
}

Prints out "This is a sentence." You should always consult the Javadocs when in doubt about what a function does. Take a look at this: http://docs.oracle.com/javase/7/docs/api/java/lang/String.html#toCharArray()

Which quotes directly: "a newly allocated character array whose length is the length of this string and whose contents are initialized to contain the character sequence represented by this string."

edited Jun 18, 2022 at 16:35

woof

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answered Jan 12, 2014 at 0:39

Kon

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