langtools/test/tools/javac/lambda/lambdaExpression/LambdaTest3.java
author mcimadamore
Sat, 17 Nov 2012 19:01:03 +0000
changeset 14547 86d8d242b0c4
permissions -rw-r--r--
8003280: Add lambda tests Summary: Turn on lambda expression, method reference and default method support Reviewed-by: jjg

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/**
 * @test
 * @bug 8003280
 * @summary Add lambda tests
 *   Test capture of "effectively final" local variable in lambda expressions
 * @compile LambdaTest3.java
 * @run main LambdaTest3
 */

public class LambdaTest3 {

    private static int count = 0;

    private static void assertTrue(boolean b) {
        if(!b)
            throw new AssertionError();
    }

    public static void main(String[] args) {
        final int N = 100;
        int n = 2; //effectively final variable

        Runnable r = ((Runnable)
            () -> {
                count += N;
                count += n;
            }
        );
        assertTrue(count == 0);
        r.run();
        assertTrue(count == 102);
    }
}