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test/runtime/Unsafe/AllocateInstance.java

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  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @summary Verifies the behaviour of Unsafe.allocateInstance
  27  * @library /testlibrary
  28  * @modules java.base/sun.misc
  29  *          java.management
  30  * @run main AllocateInstance
  31  */
  32 
  33 import com.oracle.java.testlibrary.*;
  34 import sun.misc.Unsafe;
  35 import static com.oracle.java.testlibrary.Asserts.*;
  36 
  37 public class AllocateInstance {
  38     public static void main(String args[]) throws Exception {
  39         Unsafe unsafe = Utils.getUnsafe();
  40 
  41         // allocateInstance() should not result in a call to the constructor
  42         TestClass tc = (TestClass)unsafe.allocateInstance(TestClass.class);
  43         assertFalse(tc.calledConstructor);
  44 
  45         // allocateInstance() on an abstract class should result in an InstantiationException
  46         try {
  47             AbstractClass ac = (AbstractClass)unsafe.allocateInstance(AbstractClass.class);
  48             throw new RuntimeException("Did not get expected InstantiationException");
  49         } catch (InstantiationException e) {
  50             // Expected
  51         }
  52     }
  53 
  54     class TestClass {
  55         public boolean calledConstructor = false;


  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @summary Verifies the behaviour of Unsafe.allocateInstance
  27  * @library /testlibrary
  28  * @modules java.base/sun.misc
  29  *          java.management
  30  * @run main AllocateInstance
  31  */
  32 
  33 import jdk.test.lib.*;
  34 import sun.misc.Unsafe;
  35 import static jdk.test.lib.Asserts.*;
  36 
  37 public class AllocateInstance {
  38     public static void main(String args[]) throws Exception {
  39         Unsafe unsafe = Utils.getUnsafe();
  40 
  41         // allocateInstance() should not result in a call to the constructor
  42         TestClass tc = (TestClass)unsafe.allocateInstance(TestClass.class);
  43         assertFalse(tc.calledConstructor);
  44 
  45         // allocateInstance() on an abstract class should result in an InstantiationException
  46         try {
  47             AbstractClass ac = (AbstractClass)unsafe.allocateInstance(AbstractClass.class);
  48             throw new RuntimeException("Did not get expected InstantiationException");
  49         } catch (InstantiationException e) {
  50             // Expected
  51         }
  52     }
  53 
  54     class TestClass {
  55         public boolean calledConstructor = false;
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