helloworld.java

自己写的用java调用c++写的dll的代码

public class HelloWorld 
{
	public native int Cal(int i) ;
	static
	{
		System.loadLibrary("testdll") ;		
	}
	
	public static void main(String[] args)
	{
		
		HelloWorld test = new HelloWorld() ;
		int a = 4 ;
		int b = test.Cal(a) ;
		System.out.println("The result is :"+b) ;
	}
}