1 /* src/tests/native/checkjni.java - for testing JNI related stuff
3 Copyright (C) 1996-2005, 2006 R. Grafl, A. Krall, C. Kruegel,
4 C. Oates, R. Obermaisser, M. Platter, M. Probst, S. Ring,
5 E. Steiner, C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich,
8 This file is part of CACAO.
10 This program is free software; you can redistribute it and/or
11 modify it under the terms of the GNU General Public License as
12 published by the Free Software Foundation; either version 2, or (at
13 your option) any later version.
15 This program is distributed in the hope that it will be useful, but
16 WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
25 Contact: cacao@cacaojvm.org
27 Authors: Christian Thalinger
31 $Id: checkjni.java 4695 2006-03-28 14:21:14Z twisti $
36 public class checkjni {
37 public native boolean IsAssignableFrom(Class sub, Class sup);
38 public native boolean IsInstanceOf(Object obj, Class clazz);
39 public native int PushLocalFrame(int capacity);
41 public static void main(String[] argv) {
42 System.loadLibrary("checkjni");
48 checkIsAssignableFrom();
50 checkPushLocalFrame();
53 void checkIsAssignableFrom() {
54 p("IsAssignableFrom:");
56 Class sub = Integer.class;
57 Class sup = Object.class;
59 equal(IsAssignableFrom(sup, sup), true);
60 equal(IsAssignableFrom(sub, sup), true);
61 equal(IsAssignableFrom(sup, sub), false);
64 void checkIsInstanceOf() {
67 Object obj = new Object();
68 Object obj2 = new Integer(1);
69 Class clazz = Object.class;
70 Class clazz2 = Integer.class;
72 equal(IsInstanceOf(obj, clazz), true);
73 equal(IsInstanceOf(obj2, clazz), true);
74 equal(IsInstanceOf(obj, clazz2), false);
77 void checkPushLocalFrame() {
80 equal(PushLocalFrame(100), 0);
83 void equal(boolean a, boolean b) {
90 void equal(int a, int b) {
98 System.out.println(s);