用java实现在命令方式清屏(native&…

用java实现在命令方式清屏


java实现清屏功能


1. 编写一个类ClearScreen.java


public class ClearScreen{


Static


{


loadLibrary("Clear");


}


public native static void clearScreen();


public static void main(String[] args){


clearScreen();


}


}


2. javac ClearScreen.java -> ClearScreen.class


3. javah ClearScreen -> ClearScreen.h


4. 编写ClearScreen.cpp实现native方法clearScreen();


#include <<FONTface=Arial>jawt_md.h >

#include "ClearScreen.h"


#include


JNIEXPORT VOID JNICALL Java_ClearScreen_clearScreen(JNIEnv *,jclass)


{


system("cls");


}


5.安装一个microsoft compiler编译ClearScreen.cpp，得到Clear.dll


注意：将Jdk安装环境include目录下的jawt_md.h   jni_md.hjni.h  jawt.h  4 个头文件copy到 Microsoft Visual Studio的include目录下


cl -LD ClearScreen.cpp -FeClear.dll


其中 -LD create .dll -Fe name executable file