| Interface | Description | 
|---|---|
| BossBar | Represents a boss bar. | 
| BossBarColor | Represents a color that a  BossBarmay be. | 
| BossBarOverlay | Represents an overlay that may be on a  BossBar. | 
| ServerBossBar | Represents a boss bar controlled by a  Server. | 
| ServerBossBar.Builder | Represents a builder class to create mutable  ServerBossBars. | 
| Class | Description | 
|---|---|
| BossBarColors | An enumeration of  BossBarColors. | 
| BossBarOverlays | An enumeration of  BossBarOverlays. |