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What are native methods? How do you use them?
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What are native methods? How do you use them?
2,141 Views | (5 votes, avg: 3.8)
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Native methods are methods that are defined as public static methods within a java class, but whose implementation is provided in another programming language such as C.
Refer to : http://scv.bu.edu/Doc/Java/tutorial/native/
for more info.
Native methods are methods written in other languages like C, C++, or even assembly language.
You can call native methods from Java using JNI.
Native methods are used when the implementation of a particular method is present in language other than Java say C, C++.
To use the native methods in java we use the keyword native
public native method_a()
This native keyword is signal to the java compiler that the implementation of this method is in a language other than java.
Native methods are used when we realize that it would take up a lot of rework to write that piece of alerady existing code in other language to java.
Native methods are stored in a dynamically linked library whose exact form is platform specific where as Java methods are platform independent. When a runnig Java program calls a native method, the virtual machine loads the dynamic library that contains the native method and invokes it.
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