What is java reflection ,maybe we have no chance to use it when we are coding.But it is a very useful mechanism in java.If you really know it more clearly , it is helpful to learn others more clearly.

Simply , Reflection is a mechanism for a program or a java bean to check up itself. You can use it to operate the inside property and method directly

class EX {
}
public class instance1 {
public static void main(String args[]) {
try {
Class cls = Class.forName("EX");

Method m[] = cls .getDeclaredMethods();
for (int i = 0; i < m.length; i++)
System.out.println(m[i].toString());

boolean b1 = cls.isInstance(new Integer(37));
System.out.println(b1);
boolean b2 = cls.isInstance(new EX());
System.out.println(b2);
} catch (EXCPTION e) {
System.err.println(e);
}
}
}