Sunday, 7 February 2016

Programmers Style to Propose.....!!!!!!!!!! "_Happy Propose Day_"

* Program to Propose a girl */

#include <iostream.h>
#include <conio.h>
#define Cute beautiful_lady

main()
{
goto college;
scanf("100%",&ladies);

if(lady==Cute)
line++;

while( !reply )
{

printf("I Love U");

scanf("100%",&reply);

}

if(reply == "GAALI")
main(); /* go back and repeat the process */

else if(reply == "SANDAL ")
exit(1);

else if(reply == "I Love U")
{
lover =Cute ;
love = (heart*)malloc(sizeof(lover));
}

goto restaurant;

restaurant:
{
food++;
smile++;
pay->money = lover->money;
return(college);
}

if(time==2.30)
goto cinema;

cinema:
{
watch++;
if(intermission)
{
coke++;
Popecorn++;

}
}

if(time ==6.00)
goto park;

}
}

***********************************************************************

What is Propose day....??

Love is some feeling which cannot be resisted by any living being.
So to express these feelings propose day is celebrated.
When a person accepts the proposal, that means that person accepts to live rest of the life with you.
Valentine Week starts with Rose Day.
By giving a rose, a person expresses his heart to person he loves.
After rose day, when rose has already expressed your feelings, so now propose day falls on next day of rose day.
This day is called as Propose day which gives an opportunity to propose your love and to make her your partner.
Propose the person who you love in any manner.
No matter how you are proposing. Saying simple things like "I Love You" instead of any dramatic dialogues will also be a great idea.

*******************************************************************************

Happy Propose Day......!!!!!

**********************************************************************

#Nitin Tekale

Tuesday, 17 November 2015

How to call a C program from Java? www.ni3tekaleandroid.blogspot.com

How to call a C program from Java?

Calling a C program may be useful when we prefer to use C libraries and to reuse an existing C program. When we compile a C program, the source gets converted to obj file. It is a platform dependent intermediate machine code which will be converted to exe and then executed.

Java native interface (JNI) is a framework provided by java that enables java programs to call native code and vice-versa.

Using JNI a java program has the capability to call the native C code. But we lose the core objective of java which is platform independence. So calling a C program from java should be used judiciously.

JNI provides the specification and native code should be written/ported accordingly. JDK vendor should provide the needed implementation for the JNI.

Steps to call a C program from Java

1. Write the Java Program and Compile
2. Generate header file from java class
3. Write the C Program
4. Generate Shared Library File
5. Run Java Program

1. Write the Java Program

public class JavaToC {

    public native void helloC();

    static {
        System.loadLibrary("HelloWorld");
    }

    public static void main(String[] args) {
        new JavaToC().helloC();
    }
}

Note two things in this program,

Use of native keyword. This is a method declaration and it informs the java compiler that the implementation for this method is a native one. This method helloC() is present in C source file and that is what we are going to call.
Loading the library HelloWorld using static keyword. This library file will be compiled out of the C source in the coming steps.

2. Generate header file from java class

JDK provides a tool named javah which can be used to generate the header file.
We will use the generated header file as include in C source.
Remember to compile the java program before using javah

javah JavaToC

Following is the header file generated,

/* DO NOT EDIT THIS FILE - it is machine generated */
#include
/* Header for class JavaToC */

#ifndef _Included_JavaToC
#define _Included_JavaToC
#ifdef __cplusplus
extern "C" {
#endif
/*
* Class:     JavaToC
* Method:    helloC
* Signature: ()V
*/
JNIEXPORT void JNICALL Java_JavaToC_helloC
(JNIEnv *, jobject);

#ifdef __cplusplus
}
#endif
#endif

3. Write the C Program

#include 
#include 
#include "JavaToC.h"
JNIEXPORT void JNICALL Java_JavaToC_helloC(JNIEnv *env, jobject javaobj) 
{
 printf("Hello World: From C");
 return;
}

stdio.h is the standard C header file include.
jni.h is the header file that provides the java to C mapping and it is available in JDK.
JavaToC.h is the header file generated from the java source file.

4. Generate Shared Library File

Now compile the above C source file. We need a C compiler and I have chosen Tiny C.
Tiny C can be downloaded from http://mirror.veriportal.com/savannah//tinycc/tcc-0.9.25-win32-bin.zip
Download and unzip the file and set OS path to tcc.exe
tcc HelloWorld.C -I C:/Progra~1/Java/jdk1.7.0_07/include -I C:/Progra~1/Java/jdk1.7.0_07/include/win32 -shared -o HelloWorld.dll
Above is the command to generate the shared library file dll which is loaded in the java program. Two directories are included in the compile command, those are to include the jni.h and jni_md.h