Explanation about Class

Question

I working on a java Project,

My teacher sent me an example of a code and I saw something I don't know,

But his explanation wasn't the best.

Can someone explain to me more about Class?

When to use and why to use

check out this link http://stackoverflow.com/questions/462297/how-to-use-classt-in-java — Rudra, Aug 09 '15 at 07:55

score 3 · Answer 1 · answered Aug 09 '15 at 08:05

3

Class<?> means any class type. For example, Integer.class is a type of Class<Integer>, Double.class is a type of Class<Double>.

If a type of variable is Class<?>, then the variable can be set to any class type.

Class<Integer> clazz = Integer.class (0)
Class<Integer> clazz = Double.class (x)
Class<?> clazz = Integer.class (0)
Class<?> clazz = Double.class (0)

answered Aug 09 '15 at 08:05

taegeonum

81
1
6

Can you explain more about the usage of `class<>`? – Almog Einstein Aug 09 '15 at 08:08

score 0 · Answer 2 · answered Aug 09 '15 at 08:23

Class<?>[]

getClasses()

Returns an array containing Class objects representing all the public classes and interfaces that are members of the class represented by this Class object.

From Oracle Documantation :

http://docs.oracle.com/javase/7/docs/api/java/lang/Class.html

Explanation about Class

2 Answers2