Admin: 1 версия

2010-06-01T06:59:00Z

1 версия

в 18:01, 31 мая 2010

2010-05-31T18:01:46Z

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== getClass().getResourceAsStream ==



<source lang="java">
// This example is from the book _Java AWT Reference_ by John Zukowski.
// Written by John Zukowski. Copyright (c) 1997 O"Reilly & Associates.
// You may study, use, modify, and distribute this example for any purpose.
// This example is provided WITHOUT WARRANTY either expressed or
import java.applet.Applet;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Image;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.Properties;
public class Prop11 extends Applet {
Image im;
Font f;
String msg;
public void paint(Graphics g) {
g.setFont(f);
if (im != null)
g.drawImage(im, 50, 100, this);
if (msg != null)
g.drawString(msg, 50, 50);
}
public void init() {
InputStream is = getClass().getResourceAsStream("prop11.list");
Properties p = new Properties();
try {
p.load(is);
f = Font.decode(p.getProperty("MyProg.font"));
msg = p.getProperty("MyProg.message");
String name = p.getProperty("MyProg.image");
URL url = getClass().getResource(name);
im = getImage(url);
} catch (IOException e) {
System.out.println("error loading props...");
}
}
}
File: prop11.list
MyProg.font.size=20
MyProg.font.type=italic-bold
MyProg.font.name=Helvetica
MyProg.message=Hello World
</source>



== Load resource file: absolute from the classpath ==



<source lang="java">

import java.io.IOException;
import java.net.URL;
public class Main {
public static void main(String[] args) throws IOException {
// absolute from the classpath
URL url = Main.class.getResource("/mypackage/foo.txt");
}
}
</source>



== Load resource file: relative to the class location ==



<source lang="java">
import java.io.IOException;
import java.net.URL;
public class Main {
public static void main(String[] args) throws IOException {
// relative to the class location
URL url = Main.class.getResource("foo.txt");
}
}
</source>



== relative document loading in classpath ==



<source lang="java">

import java.io.IOException;
import java.net.URL;
public class Main {
public static void main(String[] args) throws IOException {
// relative document
URL url = Main.class.getResource("docs/bar.txt");
}
}
</source>



== Try adding one or more item(s) to class path ==



<source lang="java">
/*
* Copyright (c) Ian F. Darwin, http://www.darwinsys.ru/, 1996-2002.
* All rights reserved. Software written by Ian F. Darwin and others.
* $Id: LICENSE,v 1.8 2004/02/09 03:33:38 ian Exp $
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS""
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* Java, the Duke mascot, and all variants of Sun"s Java "steaming coffee
* cup" logo are trademarks of Sun Microsystems. Sun"s, and James Gosling"s,
* pioneering role in inventing and promulgating (and standardizing) the Java
* language and environment is gratefully acknowledged.
*
* The pioneering role of Dennis Ritchie and Bjarne Stroustrup, of AT&T, for
* inventing predecessor languages C and C++ is also gratefully acknowledged.
*/
import java.util.Properties;
/**
* Try adding one or more item(s) to class path.
*/
public class SysPropSet {
static Properties p = System.getProperties();
public static void main(String[] argv) {
System.out.println("System Properties:");
System.out.println("java.class.path now = " + getClassPath());
p.setProperty("java.class.path", getClassPath() + ";"
+ "C:/jdk1.2/lib/tools.jar");
System.out.println("java.class.path now = " + getClassPath());
try {
Class.forName("sun.tools.javap.JavaP");
} catch (Exception e) {
System.err.println(e);
return;
}
System.out.println("Got it!!");
}
static String getClassPath() {
return p.getProperty("java.class.path", null);
}
}

</source>

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Admin: 1 версия

в 18:01, 31 мая 2010