Manage the closing of effectively final variables in Java 9 - Java Language Basics

Java examples for Language Basics:try catch finally

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Description

Manage the closing of effectively final variables in Java 9 

import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;


public class Main {

    public static void main(String[] args) {
        try {
            writeFile(new BufferedWriter(
                    new FileWriter("test")),
                    "This is easy in Java 9");
        } catch (IOException ioe) {
            System.out.println(ioe);
        }
    }

    public static void writeFile(BufferedWriter writer, String text) {
        try (writer) {
            writer.write(text);
        } catch (IOException ioe) {
            System.out.println(ioe);
        }
    }
}

Prior to Java 9, the writeFile would have looked as follows: 

public static void writeFile(BufferedWriter writer, String text) { 
   try (BufferedWriter w = writer) { 
        w.write(text); 
    } catch (IOException ioe) { 
        System.out.println(ioe); 
    } 
}

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