# java.lang.Error: Unresolved compilation problem: Invalid escape sequence (valid ones are \b \t \n \f \r \" \' \\ )

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via Coderanch by Raj chiru, 1 year ago
Unresolved compilation problem: Invalid escape sequence (valid ones are \b \t \n \f \r \" \' \\ )
```java.lang.Error: Unresolved compilation problem:
Invalid escape sequence (valid ones are  \b  \t  \n  \f  \r  \"  \'  \\ )	at undefined.ExcelTooXml.IsExcelWorkBookOpen(ExcelToXml.java:42)	at undefined.ExcelToXml.main(ExcelToXml.java:133)```

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