jdk-24/hotspot/test/runtime/Unsafe/GetField.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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/*
 * @test
 * @summary Verifies behaviour of Unsafe.getField
 * @library /testlibrary
 * @modules java.base/sun.misc
 *          java.management
 * @run main GetField
 */

import com.oracle.java.testlibrary.*;
import sun.misc.Unsafe;
import java.lang.reflect.*;
import static com.oracle.java.testlibrary.Asserts.*;

public class GetField {
    public static void main(String args[]) throws Exception {
        Unsafe unsafe = Utils.getUnsafe();
        // Unsafe.INVALID_FIELD_OFFSET is a static final int field,
        // make sure getField returns the correct field
        Field field = Unsafe.class.getField("INVALID_FIELD_OFFSET");
        assertNotEquals(field.getModifiers() & Modifier.FINAL, 0);
        assertNotEquals(field.getModifiers() & Modifier.STATIC, 0);
        assertEquals(field.getType(), int.class);
    }
}