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  • 泛型(Generic): in, out, where
  • 类型变异(Variance)
  • Java 中的类型变异(Variance)和通配符(Wildcard)
  • 声明处的类型变异(Declaration-site variance)
  • 类型投射(Type projection)
  • 使用处的类型变异(Use-site variance): 类型投射(Type projection)
  • 星号投射(Star-projection)
  • 泛型函数
  • 泛型约束(Generic constraint)
  • 上界(Upper Bound)
  • 确定不为 null 的类型
  • 类型擦除
  • 泛型的类型检查与类型转换
  • 未检查的类型转换
  • 对类型参数的下划线操作符

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