| This directory contains example programs that show how the GNU Classpath |
| library can be used. |
| |
| Each example has its own package under gnu.classpath.examples and has a |
| class Demo which contains a main() method to run that particular example. |
| |
| The examples can be compiled and run with gcj as follows: |
| |
| gcj -o swingdemo --main=gnu.classpath.examples.swing.Demo \ |
| gnu/classpath/examples/swing/Demo.java \ |
| gnu/classpath/examples/swing/GNULookAndFeel.java |
| ./swingdemo |
| |
| Or with a traditional byte code interpreter like: |
| |
| gcj -C gnu/classpath/examples/awt/Demo.java |
| gij gnu.classpath.examples.awt.Demo |
| |
| The installation also comes with an examples.zip archive that contains |
| all needed resources and compiled byte code class files that can be |
| run as follows: |
| |
| kaffe -classpath examples.zip gnu.classpath.examples.awt.Demo |
| kaffe -classpath examples.zip gnu.classpath.examples.swing.Demo |
| |
| The jawt Demo needs some extra support library that currently needs to be |
| build by hand. The following assumes GNU Classpath was installed in |
| /usr/local/classpath, if you installed it somewhere else then adjust the |
| -I and -L paths accordingly. The included Makefile.jawt is setup this way. |
| |
| You can invoke it with: |
| |
| make -f Makefile.jawt |
| |
| Or you can compile by hand as follows: |
| |
| gcj -C gnu/classpath/examples/jawt/DemoJAWT.java |
| gcjh -jni gnu.classpath.examples.jawt.DemoJAWT -o DemoJAWT.h |
| gcc -g -O0 -Wall -I. -I/usr/X11R6/include -L. -L/usr/X11R6/lib \ |
| -I/usr/local/classpath/include -L/usr/local/classpath/lib/classpath \ |
| -lX11 -ljawtgnu -shared -o libDemoJAWT.so \ |
| gnu/classpath/examples/jawt/DemoJAWT.c |
| |
| You can then run the example as follows: |
| |
| export LD_LIBRARY_PATH=.:/usr/local/classpath/lib/classpath |
| jamvm gnu.classpath.examples.jawt.DemoJAWT |
| |
| The java2d benchmarking demos include a GTK widget to measure the native |
| speed of some basic java2d options, without the JNI overhead. |
| |
| You can invoke it with: |
| |
| make -f Makefile.java2d |
| |
| Or you can compile by hand as follows: |
| |
| gcc -g -O0 -Wall -I./gnu/classpath/examples/java2d \ |
| -o cairobench gnu/classpath/examples/java2d/bench.c \ |
| `pkg-config --libs --cflags gtk+-2.0` |
| |
| You can then run the example as follows: |
| |
| ./cairobench |
| |
| All example code is distributed under the GNU General Public License (GPL). |
| |
| The example icons used in some of the examples come from gnome-icon-theme |
| version 1.2.3 and are also distributed under the GPL. |
| All these images are stored in the directory gnu/classpath/examples/icons/. |
| |
| More free icons can be found in the gnome-icon-theme package: |
| http://ftp.gnome.org/pub/GNOME/sources/gnome-icon-theme/ |
| |
| |
| GNU Classpath examples are free software; you can redistribute it |
| and/or modify it under the terms of the GNU General Public License as |
| published by the Free Software Foundation; either version 2, or (at |
| your option) any later version. |
| |
| GNU Classpath examples are distributed in the hope that they will be |
| useful, but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath examples; see the file COPYING. If not, |
| write to the Free Software Foundation, 51 Franklin Street, Fifth Floor, |
| Boston, MA 02110-1301, USA. |