Name: rm29839 Date: 06/03/98


My source files:
:::::::::::::
invoke.c
:::::::::::::
#include <jni.h>
CallJVM() {
JNIEnv *env;
JavaVM *jvm;
jint res;
jclass cls;
jmethodID mid;
jstring jstr;
jobjectArray args;

JavaVMOption options[1];
JavaVMInitArgs vm_args;

/* Set up the options */
options[0].name = "classpath";
options[0].value.p = "/dkise1/oggioni/EXAMPLES/AWTONLY:/dkise3/JAVA/JDK12BETA3/jdk1.2beta3/lib/classes.zip";
vm_args.version = 0x00010002;
vm_args.options = options;
vm_args.nOptions = 1;
vm_args.result = NULL;
/* Set the vm_args members as required, eg: classpath
verifyMode, maxHeapSize, etc. */

res = JNI_CreateJavaVM(&jvm, &env, &vm_args);
if (res < 0) {
fprintf(stderr, "Can't create Java VM\n");
exit(1);
}

cls = (*env)->FindClass(env, "SimplePanelTest");
printf("Dopo la find class \n");
if (cls == 0) {
fprintf(stderr, "Can't find SimplePanelTest class\n");
exit(1);
}
 
mid = (*env)->GetStaticMethodID(env, cls, "CreateFirstFrame", "([Ljava/lang/String;)V");
if (mid == 0) {
fprintf(stderr, "Can't find SimplePanelTest.CreateFirstFrame\n");
exit(1);
}

jstr = (*env)->NewStringUTF(env, "First Daisy panel");
if (jstr == 0) {
fprintf(stderr, "Out of memory\n");
exit(1);
}
args = (*env)->NewObjectArray(env, 1, (*env)->FindClass(env, "java/lang/String"), jstr);
if (args == 0) {
fprintf(stderr, "Out of memory\n");
exit(1);
}
(*env)->CallStaticVoidMethod(env, cls, mid, args);
(*jvm)->DestroyJavaVM(jvm);
}
main() { CallJVM(); }
:::::::::::::
SimplePanelTest.java
:::::::::::::
import java.awt.*;
import java.awt.event.*;
import java.util.Vector;

// Subclass Frame so you can display a window
public class SimplePanelTest extends Frame {

// Set up constants for width and height of frame
static final int WIDTH = 600;
static final int HEIGHT = 400;

private native Void CreateNativeButt(String Title);
private native Void CreateNativeText(String Init);
private native Void CreateNativeLabel(String Lab);

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

// CONSTRUCTOR
SimplePanelTest(String title) {

// Set the title of the frame
super(title);

                // Lay out the components.
// GridBagLayout gbl = new GridBagLayout();
// setLayout(gbl);

GridBagLayout gbl = new GridBagLayout();
GridBagConstraints gbc = new GridBagConstraints();
                gbc.fill = GridBagConstraints.VERTICAL;

                setLayout(new GridBagLayout());
CreateNativeLabel("Prima Label");
CreateNativeText("Primotext");

CreateNativeButt("Primobottone");
CreateNativeText("Secondotext");

CreateNativeButt("Secondobottone");
CreateNativeButt("Terzobottone");
}
// CreateFirstFrame to execute the application
public static void CreateFirstFrame(String args[]) {

// instantiate a SimplePanelTest object
// so you can display it
Frame frame = new SimplePanelTest(args[0]);
frame.setSize(WIDTH, HEIGHT);
// frame.setResizable(false);
// Create a WindowAdapter so the application
// is exited when the window is closed.
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});

// Set the size of the frame and show it
frame.setVisible(true);
}
        public void CreateButt(Frame currentOne, String Title) {

GridBagLayout gbl = new GridBagLayout();
GridBagConstraints gbc = new GridBagConstraints();

                Panel p1 = new Panel();
                p1.setLayout(new GridLayout(2,1));

                p1.add(new Button(Title));
                gbc.gridwidth = GridBagConstraints.REMAINDER;
                gbl.setConstraints ( p1, gbc );

                p1.add(new Button(Title));
                gbc.gridwidth = GridBagConstraints.RELATIVE;
                gbl.setConstraints ( p1, gbc );

                currentOne.add(p1);
setLayout(gbl);
        }
        public void CreateText(Frame currentOne, String Init) {
GridBagLayout gbl = new GridBagLayout();
GridBagConstraints gbc = new GridBagConstraints();

                Panel p1 = new Panel();
                p1.setLayout(new GridLayout(2,1));

                p1.add(new TextField(Init, 20));
                gbc.gridwidth = GridBagConstraints.REMAINDER;
                gbl.setConstraints ( p1, gbc );

                p1.add(new TextField(Init, 20));
                gbc.gridwidth = GridBagConstraints.RELATIVE;
                gbl.setConstraints ( p1, gbc );

                currentOne.add(p1);
setLayout(gbl);

        }

        public void CreateLabel(Frame currentOne, String Lab) {

GridBagLayout gbl = new GridBagLayout();
GridBagConstraints gbc = new GridBagConstraints();

                Panel p1 = new Panel();
                p1.setLayout(new GridLayout(2,1));

                p1.add(new Label("Prima :", Label.RIGHT));
                gbc.gridwidth = GridBagConstraints.REMAINDER;
                gbl.setConstraints ( p1, gbc );

                p1.add(new Label("Seconda :", Label.RIGHT));
                gbc.gridwidth = GridBagConstraints.RELATIVE;
                gbl.setConstraints ( p1, gbc );

                currentOne.add(p1);
setLayout(gbl);

        }
}
:::::::::::::
ritorna.c
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#include <oobj.h>
#include <jni.h>
#include <stdio.h>
#include "SimplePanelTest.h"
JNIEXPORT jobject JNICALL Java_SimplePanelTest_CreateNativeButt
  (JNIEnv *env, jobject obj, jstring ButtonLabel)
{
jclass cls = (*env)->GetObjectClass(env, obj);
jmethodID mid = (*env)->GetMethodID(env, cls, "CreateButt", "(Ljava/awt/Frame;Ljava/lang/String;)V");
if (mid == 0) {
printf("Mid=0 in CreateNativeButt\n");
return;
}
(*env)->CallVoidMethod(env, obj, mid, obj, ButtonLabel);
}
JNIEXPORT jobject JNICALL Java_SimplePanelTest_CreateNativeText
  (JNIEnv *env, jobject obj, jstring InitText)
{
jclass cls = (*env)->GetObjectClass(env, obj);
jmethodID mid = (*env)->GetMethodID(env, cls, "CreateText", "(Ljava/awt/Frame;Ljava/lang/String;)V");
if (mid == 0) {
printf("Mid=0 in CreateNativeText\n");
return;
}
(*env)->CallVoidMethod(env, obj, mid, obj, InitText);
}
JNIEXPORT jobject JNICALL Java_SimplePanelTest_CreateNativeLabel
  (JNIEnv *env, jobject obj, jstring Lab)
{
jclass cls = (*env)->GetObjectClass(env, obj);
jmethodID mid = (*env)->GetMethodID(env, cls, "CreateLabel", "(Ljava/awt/Frame;Ljava/lang/String;)V");
if (mid == 0) {
printf("Mid=0 in CreateNativeLabel\n");
return;
}
(*env)->CallVoidMethod(env, obj, mid, obj, Lab);
}

I compile my file with this instruction:
export JAVAPATH=/dkise3/JAVA/JDK12BETA3/jdk1.2beta3
javac -classpath .:$JAVAPATH/lib/classes.zip SimplePanelTest.java
javah -jni -classpath .:$JAVAPATH/lib/classes.zip SimplePanelTest
cc -g -I $JAVAPATH/include -I $JAVAPATH/include/solaris -ljvm invoke.c
cc -g -G -I $JAVAPATH/include-old -I $JAVAPATH/include-old/solaris -I $JAVAPATH/include -I $JAVAPATH/include/solaris ritorna.c -o liboggettini.so

but when I exec the a.out file it try to load classes
from directory /dkise3/JAVA/JDK12BETA3/jdk1.2beta3/classes
while my classes are in my directory /dkise1/oggioni/EXAMPLES/AWTONLY,
if I put my classes in the directory /dkise3/JAVA/JDK12BETA3/jdk1.2beta3/classes
the program function but this is not what I want !!!

My Operating System is Solaris 2.5.1
(Review ID: 28052)
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