Question

44

Invalid escape sequence (valid ones are b t n f r ' \ ) in java

rated 0 times [ 45] [ 1] / answers: 1 / hits: 10490 / 10 Years ago, thu, march 6, 2014, 12:00:00

I am using URL Matching with parent domain and I-Frame domain. Getting this error to put the below code inside Java Class.

out.print(ref = url.match(/://(.[^/]+)/)[1];);

Getting Error for this line:

Invalid escape sequence (valid ones are b t n f r  ' \ )

Original script:

    out.print(<script>);

//need to put below line inside java class, so using out.print( );

ref = url.match(/://(.[^/]+)/)[1];

out.print(</script>);

How to use this correctly?

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lesterluiss

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3 Years ago

answered 10 Years ago reed · Accepted Answer

In a Java string, to actually have a backslash you have to escape it with another backslash. So all should be escaped with another in your out.print line:

out.print(ref = url.match(/:\/\/(.[^/]+)/)[1];);

                      //     ^  ^

That outputs this:

ref = url.match(/://(.[^/]+)/)[1];