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import java.lang.Deprecated
object Test1 {
class Foo {
@remote
def foo: Unit = ()
}
def run: Unit = {
val method = classOf[Foo].getMethod("foo", Array())
method.getExceptionTypes foreach Console.println
}
}
object Test2 {
import java.io.{BufferedReader,FileReader, IOException}
class Reader(fname: String) {
private val in = new BufferedReader(new FileReader(fname))
@throws(classOf[IOException])
def read() = in.read()
}
def run: Unit = {
val method = classOf[Reader].getMethod("read", Array())
method.getExceptionTypes foreach Console.println
}
}
/* Java:
public class Main {
@Deprecated
public void foo() {}
public static void main(String[] args) throws Exception {
Method method = Class.forName("test.Main").getMethod("foo", new Class[]{});
Annotation annotation = method.getAnnotation(Deprecated.class);
System.out.println(annotation); // @java.lang.Deprecated()
}
}
*/
object Test3 {
class Foo {
@Deprecated
def foo: Unit = ()
}
def run: Unit = {
val method = classOf[Foo].getMethod("foo", Array())
val annotation = method.getAnnotation(classOf[Deprecated])
Console.println(annotation)
}
}
/* Java:
@Retention(value=RetentionPolicy.RUNTIME)
@interface Source {
public String url();
public String mail();
}
@Source(url="http://scala.epfl.ch", mail="scala@lists.epfl.ch")
class Foo {}
public class Main {
public static void main(String[] args) throws Exception {
Class clazz = Class.forName("test.Foo");
Annotation[] annotations = clazz.getAnnotations();
for (int i = 0; i < annotations.length; i++)
System.out.println(annotations[i]);
// @test.Main$Source(url=http://scala.epfl.ch, mail=scala@lists.epfl.ch)
}
}
*/
object Test4 {
import test.SourceAnnotation // defined in SourceAnnotation.java
@SourceAnnotation{val value = "http://scala.epfl.ch", val mail = "scala@lists.epfl.ch"}
class Foo1
@SourceAnnotation("http://bloodsuckers.com") { val mail = "you@bloodsuckers.com" }
class Foo2
@SourceAnnotation("http://bloodsuckers.com")
class Foo3
def run: Unit = {
classOf[Foo1].getAnnotations foreach Console.println
classOf[Foo2].getAnnotations foreach Console.println
classOf[Foo3].getAnnotations foreach Console.println
}
}
object Test {
def main(args: Array[String]): Unit = {
Test1.run
Test2.run
Test3.run // requires the use of -target:jvm-1.5
Test4.run
}
}
|
