/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
*
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* under the terms of the GNU General Public License version 2 only , as
* published by the Free Software Foundation .
*
* This code is distributed in the hope that it 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
* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
*
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* questions .
*/
/* @test
* @ bug 4110602
* @ author Benjamin Renaud
* @ summary check that URLClassLoader correctly interprets Class - Path
*
* This test ensures that a manually constructed URLClassLoader is
* able to :
*
* 1 . load a class
* 2 . resolve Class - Path dependencies
* 3 . have that class use a dependent class in a different JAR file
*/
import java.util.jar.*;
import java.util.*;
import java.io.*;
import java.net.*;
public class ClassPathTest {
JarFile jarFile;
Manifest manifest;
Attributes mainAttributes;
Map map;
URLClassLoader ucl;
static class TestException extends RuntimeException {
TestException(Throwable t) {
super ("URLClassLoader ClassPathTest failed with: " + t);
}
}
public ClassPathTest() {
File local = new File(System.getProperty("test.src" , "." ),
"jars/class_path_test.jar" );
String jarFileName = local.getPath();
try {
jarFile = new JarFile(jarFileName);
}
catch (IOException e) {
System.err.println("Could not find jar file " + jarFileName);
throw new TestException(e);
}
try {
URL url = getUrl(new File(jarFileName));
System.out.println("url: " + url);
ucl = new URLClassLoader(new URL[] { url });
// Moved this inside try block, as it may raise IOException.
// (maddox)
manifest = jarFile.getManifest();
}
catch (Exception e) {
throw new TestException(e);
}
//manifest = jarFile.getManifest();
mainAttributes = manifest.getMainAttributes();
map = manifest.getEntries();
Iterator it = map.entrySet().iterator();
Class clazz = null ;
while (it.hasNext()) {
Map.Entry e = (Map.Entry)it.next();
Attributes a = (Attributes)e.getValue();
Attributes.Name an = new Attributes.Name("Class-Path" );
if (a.containsKey(an)) {
String val = a.getValue(an);
if (val != null )
System.out.println("Class-Path: " + val);
}
if (a.containsKey(new Attributes.Name("Java-Bean" ))) {
String beanClassName = nameToClassName((String)e.getKey());
System.out.println("JavaBean Class: " + beanClassName);
try {
clazz = ucl.loadClass(beanClassName);
}
catch (Throwable t) {
throw new TestException(t);
} if (clazz != null ) {
try {
System.out.println("instantiating " + beanClassName);
clazz.newInstance();
System.out.println("done instantiating " +
beanClassName);
} catch (Throwable t2) {
throw new TestException(t2);
}
}
}
}
}
String nameToClassName(String key) {
String key2 = key.replace('/' , File.separatorChar);
int li = key2.lastIndexOf(".class" );
key2 = key2.substring(0 , li);
return key2;
}
private static URL getUrl(File file) {
String name;
try {
name = file.getCanonicalPath();
} catch (IOException e) {
name = file.getAbsolutePath();
}
name = name.replace(File.separatorChar, '/' );
if (!name.startsWith("/" )) {
name = "/" + name;
}
try {
return new URL( "file:" + name);
} catch (MalformedURLException e) {
throw new TestException(e);
}
}
public static void main(String args[]) {
new ClassPathTest();
}
}
Messung V0.5 in Prozent C=97 H=97 G=96
¤ Dauer der Verarbeitung: 0.10 Sekunden
(vorverarbeitet am 2026-10-11)
¤
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