Does java have an equivalent to the C# “using” clause

Question

I\'ve seen reference in some C# posted questions to a \"using\" clause. Does java have the equivalent?

Answer 1

Yes, since Java 7 you can rewrite:

InputStream is1 = new FileInputStream("/tmp/foo");
try{

    InputStream is2 =  new FileInputStream("/tmp/bar");
    try{
         /* do stuff with is1 and is2 */

    } finally {
        is2.close();
    }
} finally {
    is1.close();
}

As

try(InputStream is1 = new FileInputStream("/tmp/foo");
    InputStream is2 =  new FileInputStream("/tmp/bar")) {
         /* do stuff with is1 and is2 */
}

The objects passed as parameters to the try statement should implement java.lang.AutoCloseable.Have a look at the official docs.

For older versions of Java checkout this answer and this answer.