' \ '-Invalid character constant?

Question

I need to do this:

while (result2.charAt(j)!=\'\\\'){

    }

I get an error saying: Invalid character constant.

Why? a

Answer 1

Use '\\'. It's because backslash is used in escape sequence like '\n'. With a single \ the compiler have no way to know.

Answer 2

The backslash is a special character and it needs to be escaped with another backslash. Like this:

while (result2.charAt(j)!='\\'){

}

Answer 3

Same error here, but using unicode character representation.

005C is backlash character. Need to escape it: "\u005C" .

Example:

str = str.replace("\\u005C", "'\\u005C'");

Answer 4

You need to escape it I think,

So you need to do

while(results2.charAt(j)!='\\')
{
}

I think that's the solution I think

Answer 5

I got this similar error in Eclipse for Android although for different situation, and I just figured out that in Java you cannot enclose a string (multi-character word) in single quotes. So you need to have like - "sampleword" strings enclosed in double quotes rather than single quote to get rid of such error thought I could just share it here for others to refer..

Answer 6

Looks like you need to escape the backslash. Try

while (result2.charAt(j)!='\\'){

    }