MATLAB REAL-TIME WORKSHOP 7 - TARGET LANGUAGE COMPILER Manual de usuario descargar pdf (Pagina 245)

100

101

Example – Creating and Using a Phone Book

5-75

if r == 'y',

try

FOS = java.io.FileOutputStream(pbname);

FOS.close

catch

error(sprintf('Failed to create %s', pbname));

end;

else

return;

end;

3. Create a Hash Table

The example constructs a java.util.Properties object to serve as the hash

table for the data dictionary.

pb_htable = java.util.Properties;

4. Create a File Input Stream

In a try block, the example invokes a FileInputStream constructor with the

name of the phone book file, assigning the object to

FIS. If the call fails, the

catch statement displays an error message and terminates the program.

try

FIS = java.io.FileInputStream(pbname);

catch

error(sprintf('Failed to open %s for reading.', pbname));

end;

5. Load the Phone Book Keys and Close the File Input Stream

The example calls load on the FileInputStream object FIS, to load the phone

book keys and their values (if any) into the hash table. It then closes the file

input stream.

pb_htable.load(FIS);

FIS.close;

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