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Editor to share with you how to make java reflection object acquisition, I believe that most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to understand it!

How to get java.lang.Class object

Cash disk system production Q

SuppressWarnings ("all") / / suppresses warnings

Public class Deam {

Public static void main (String [] args) throws InstantiationException, IllegalAccessException, IllegalArgumentException, InvocationTargetException, NoSuchMethodException, SecurityException {

Try {

/ / after a class is loaded, jvm will create a Class object of the corresponding class, and the whole information of the class will be put into the corresponding Class object

Class c=Class.forName ("cn.sxt.in.Demo")

System.out.println (c)

/ / Class name .class gets the Class object

Class strc=String.class

/ / object .getClass () gets the Class object

String path= "a"

Class strc2=path.getClass (); / / is the same as the Class object of String above

System.out.println (strc==strc2); / / true

Class intc=int.class; / / get the Class object of int

Int [] a=new int [10]

Int [] a2=new int [20]; / / the Class objects of the array are all the same

String [] a3=new String [10]; / / different types of arrays and arrays of different dimensions get different Class objects

System.out.println (a.getClass () .hashCode ())

System.out.println (a3.getClass () .hashCode ())

} catch (ClassNotFoundException e) {

E.printStackTrace ()

}

}

}

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