垃圾回收器組合spa
| young | Tenured | JVM options |
| Serial | Serial | -XX:+UseSerialGC |
| Parallel Scavenge | Serial | -XX:+UseParallelGC -XX:-UseParallelOldGC |
| Parallel Scavenge | Parallel Old | -XX:+UseParallelGC -XX:+UseParallelOldGC |
| Parallel New或Serial | CMS | -XX:+UseParNewGC -XX:+UseConcMarkSweepGC |
| G1 | G1 | -XX:+UseG1GC |