java 基础类型是不是对象

[路熊的架构之路]

看到ObjectInputStream源码的时候看到了这么一段代码， 集合是只能放入对象的，byte这种基础类型，怎么可以这样操作？byte.class是对应的包装类Byte么？求解释

[soton_dolphin]

这只是用来获得基本类的 Class 对象， Class byteClass = byte.class, 因为直接用 byte.getClass() 会产生编译错误，因为byte是基础类型。 The .class Syntax If the type is available but there is no instance then it is possible to obtain a Class by appending ".class" to the name of the type. This is also the easiest way to obtain the Class for a primitive type. boolean b; Class c = b.getClass(); // compile-time error Class c = boolean.class; // correct Note that the statement boolean.getClass() would produce a compile-time error because a boolean is a primitive type and cannot be dereferenced. The .class syntax returns the Class corresponding to the type boolean. Class c = java.io.PrintStream.class; The variable c will be the Class corresponding to the type java.io.PrintStream. Class c = int[][][].class; The .class syntax may be used to retrieve a Class corresponding to a multi-dimensional array of a given type.

[路熊的架构之路]

原来如此，谢谢啦