1. Example

2. See also

3. External links

GIWS is a wrapper generator intended to simplify calling Java from C or C++ by automatically generating the necessary JNI code.

GIWS is released under the CeCILL license.

Example

The following Java class does some simple computation.

package basic_example;

import java.lang.Math;

public class MyComplexClass{

public MyComplexClass(){

// the constructor

}

public long myVeryComplexComputation(double a, double b){

return Math.round(Math.cos(a)+Math.sin(b)*9);

}

}

GIWS gives the capability to call it from C++.

1. include
2. include "basic_example.hxx"
3. include

JavaVM* create_vm() {

JavaVM* jvm;

JNIEnv* env;

JavaVMInitArgs args;

JavaVMOption options[2];

args.version = JNI_VERSION_1_4;

args.nOptions = 2;

options[0].optionString = const_cast("-Djava.class.path=.");

options[1].optionString = const_cast("-Xcheck:jni");

args.options = options;

args.ignoreUnrecognized = JNI_FALSE;

JNI_CreateJavaVM(&jvm, (void **)&env, &args);

return jvm;

}

using namespace basic_example;

using namespace std;

int main(){

MyComplexClass *testOfMyClass = new MyComplexClass(jvm);

cout << "My Computation: " << testOfMyClass->myVeryComplexComputation(1.2,80) << endl;

return 0;

}

To generate the binding, GIWS uses a XML declaration. GIWS will generate the JNI code to call the Java object.

See also

• SWIG allows one to call C or C++ from higher level languages

External links

• {{Official website|https://github.com/opencollab/giws/}}

• Mihangel
• Mihano Momosa
• Mihan-parast
• Mihan Party
• Mihara Kohei
• Mihara Kohhei
• Mihara Kouhei
• Mihara Kōhei
• Miharja LRT Station
• Miharja station
• Miharu Castle
• Miharu Nijino
• Mihashin Furaana Dhandhen
• Miha Simenc
• Miha Stebih
• Miha Tisler
• Miha Tišler
• Miha Vašl
• Mihayo, Charles
• Miha Zarabec
• Mihaíl Anastasakis
• Mihaíl Anastasákis
• Mihaïl Popov
• Miha Šimenc
• Mihee-Nathalie Lemoine