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Java 9: Building Robust Modular Applications
book

Java 9: Building Robust Modular Applications

by Dr. Edward Lavieri, Peter Verhas, Jason Lee
April 2018
Intermediate to advanced content levelIntermediate to advanced
910 pages
33h 21m
English
Packt Publishing
Content preview from Java 9: Building Robust Modular Applications

The try-with-resource statement

The try-with-resource statement previously required a new variable to be declared for each resource in the statement when a final variable was used. Here is the syntax for the try-with-resource statement prior to Java 9 (in Java 7 or 8):

    try ( // open resources )     {      // use resources    } catch (// error)     {  // handle exceptions    }    // automatically close resources

Here is a code snippet using the preceding syntax:

    try ( Scanner xmlScanner = new Scanner(new File(xmlFile));    {       while (xmlScanner.hasNext())       {          // read the xml document and perform needed operations       }      xmlScanner.close();    } catch (FileNotFoundException fnfe)      {         System.out.println("Your XML file was not found.");      }

Now, with Java 9, the try-with-resource ...

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Publisher Resources

ISBN: 9781788832823Supplemental ContentOtherPurchase LinkErrata Page