selfboundingmethods.java

来自「java编程思想(第四版)书中原代码 ,对初学者很有用的东西」· Java 代码 · 共 11 行

//: generics/SelfBoundingMethods.java

public class SelfBoundingMethods {
  static <T extends SelfBounded<T>> T f(T arg) {
    return arg.set(arg).get();
  }
  public static void main(String[] args) {
    A a = f(new A());
  }
} ///:~