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int a = biggerOne(3,5);
//int 和 double,取交为Number
Number b = biggerOne(3,5.5);
System.out.println(b.getClass().getName());
//String和int 取交为Object
Object c = biggerOne("1",2);``
关于为什么b是Double类型的猜测。
这应该是多态,类如Number b = new Double();
而为什么将Number改为Double报错,应该是因为泛型T可能的值有两个int和double,做了类型限制,这样代码更加灵活,出错率低。
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