代码：
import java.lang.reflect.*;
class S{
}
public class IsInstance {
public static void main(String[] args) {
try {
Class cls=Class.forName("S");
boolean b1=cls.isInstance(new Integer(37));
System.out.println(b1);
boolean b2=cls.isInstance(new S());
System.out.println(b2);
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
}
}
错误信息：
java.lang.ClassNotFoundException: S
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at com.bochy.test1021.IsInstance.main(IsInstance.java:11)
哪位给指点一下，十分感谢！
------解决思路----------------------
少包名，你这个类放在哪个包下面的，写全
比如com.test.S