question: private String convertUserInputIntoAFullyQualifiedPath ( final String userInput ) { if ( FileUtils . denotesAbsolutePath ( userInput ) ) { return userInput ; } if ( userInput . startsWith ( HOME_DIRECTORY_SYMBOL ) ) { Assert . notNull ( home , "Home directory could not be determined from system properties" ) ; if ( userInput . length ( ) > 1 ) { return home + userInput . substring ( 1 ) ; } } String fullPath = getWorkingDirectoryAsString ( ) + userInput ; return fullPath ; }
target:  If the user input starts with a tilde character (~), replace the tilde character with the user's home directory. If the user input does not start with a tilde, simply return the original user input without any changes if the input specifies an absolute path, or return an absolute path based on the working directory if the input specifies a relative path.