Java Native
Keyword

Native is a Java keyword that
is used in method declarations to specify that the method will not be
implemented in another language, not in Java. This keyword signals to the
Java compiler that the function is a native language function i.e. its
implementation for is written in another programming language because of the native
keyword. For example you can write machine-dependent C code and invoke it
from Java.
The usual means of write such
methods is JNI (Java Native Interface). The Java Native Interface (JNI) comes
with the standard Java Development Kit (JDK) from Sun Microsystems. It
permits Java programmers to integrate native code (currently C and C++) into
their Java applications. The Java Native Interface (JNI) is
also known as programming framework, which lets a native method utilize Java
objects in the same way that Java code uses these objects. The primary goal
of JNI is binary compatibility of native method libraries across all Java
virtual machine implementations on a given platform.
The signature of native method looks like this:
public native
void method();
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