A method implemented in some other language besides Java, typically C++, C or assembler. Such methods are platform specific and
need an implementation for each platform you want to run on. The usual means of write
such methods is JNI (Java Native Interface). You can write machine-dependent C code and invoke it
from Java.Running native methods from Applets is an incredible hassle. You must deal
with defanging the sandbox security and installing any native classes on the
client’s hard disk.