test/hotspot/jtreg/gc/metaspace/TestMetaspacePerfCounters.java

8217332: JTREG: Clean up, use generics instead of raw types

*** 68,78 ****
   *          jdk.internal.jvmstat/sun.jvmstat.monitor
   * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-UseCompressedOops -XX:-UseCompressedClassPointers -XX:+UsePerfData -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC gc.metaspace.TestMetaspacePerfCounters
   * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCompressedOops -XX:+UseCompressedClassPointers -XX:+UsePerfData -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC gc.metaspace.TestMetaspacePerfCounters
   */
  public class TestMetaspacePerfCounters {
!     public static Class fooClass = null;
      private static final String[] counterNames = {"minCapacity", "maxCapacity", "capacity", "used"};
      private static final List<GarbageCollectorMXBean> gcBeans = ManagementFactoryHelper.getGarbageCollectorMXBeans();
  
      public static void main(String[] args) throws Exception {
          String metaspace = "sun.gc.metaspace";
--- 68,78 ----
   *          jdk.internal.jvmstat/sun.jvmstat.monitor
   * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-UseCompressedOops -XX:-UseCompressedClassPointers -XX:+UsePerfData -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC gc.metaspace.TestMetaspacePerfCounters
   * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCompressedOops -XX:+UseCompressedClassPointers -XX:+UsePerfData -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC gc.metaspace.TestMetaspacePerfCounters
   */
  public class TestMetaspacePerfCounters {
!     public static Class<?> fooClass = null;
      private static final String[] counterNames = {"minCapacity", "maxCapacity", "capacity", "used"};
      private static final List<GarbageCollectorMXBean> gcBeans = ManagementFactoryHelper.getGarbageCollectorMXBeans();
  
      public static void main(String[] args) throws Exception {
          String metaspace = "sun.gc.metaspace";