Write some Java Software
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项目预算€30 - €250 EUR
The objective of this
program will be to write to and read from a text file. There will be two classes developed –
“ReadWrite” and “InvalidFileTypeException”.
o This class will handle the process of writing text to a file and reading from this text
file. It will have two fields named “file” and “text”.
o There should be one constructor and three methods in this class named “write”,
"writeToFile" and “read”
o The constructor will request two String parameters 1. file (file to be written to) and 2.
text (text to be written).
- “write” method: (private)
o This method should write some text to the file specified in the constructor.
o The method should ensure that the file to be written to ends with the file extension -
".txt". If not, an "InvalidFileException" should be thrown.
o This method should claim (throw) two types of checked Exceptions.
- "writeToFile" method:
o This method should return "true" if the text is written successfully and "false"
o This method should invoke the "write" method.
o This method should catch at least two exceptions
The exceptions should give the user a specific message about what
happened along with printing the stack trace to the console window.
- "read" method:
o This method will involve reading text from the text file.
o It will take one parameter - "fileToRead" - the name of the file to be read.
o You should output the text from this file to the console window.
o Ensure to incorporate Exception handling into this method also.
If the file is not found - the exception object generated should return
the following message i.e. " filename (The system cannot find the file
If there's an I/O error - the relevant exception should be caught.
o You should develop a class named “InvalidFileException” class.
o This class should define a "Checked Exception".
o This exception should be implemented in the "ReadWrite" class.
o This class should contain a "toString" method which when called, will state :
Sorry, but this program only supports "text" files.
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