java reflection instantiation method

1. Description

When obtaining a class, you must directly use the keyword new to operate the object instance. This is our customary approach. If you obtain a Class object, you can use reflection instance object operations.

2. Example

    /*正常实例化*/
    class Book{
public Book(){
System.out.println("*** Book的构造方法 ***");
}
@Override
public String toString() {
return "--- 这是Book方法 ---";
}
    }
    public class ReflectTest6 {
public static void main(String[] args) throws ClassNotFoundException {
Book b = new Book();
System.out.println(b);
}
    }
    "*** Book的构造方法 ***
     --- 这是Book方法 ---"

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