boundedclassreferences.java

来自「Thinking in JAVA第四版源代码」· Java 代码 · 共 11 行

//: typeinfo/BoundedClassReferences.java

public class BoundedClassReferences {
  public static void main(String[] args) {
    Class<? extends Number> bounded = int.class;
    bounded = double.class;
    bounded = Number.class;
    // Or anything else derived from Number.
  }
} ///:~