/*
* Copyright ( c ) 2018 , Oracle and / or its affiliates . All rights reserved .
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
*
* This code is free software ; you can redistribute it and / or modify it
* 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 .
*
* Please contact Oracle , 500 Oracle Parkway , Redwood Shores , CA 94065 USA
* or visit www . oracle . com if you need additional information or have any
* questions .
*/
/*
* This class is intended to be run in the single source - file launcher
* mode defined by JEP 330 . It checks the operation of the getResource *
* methods provided by the MemoryClassLoader used to run the compiled
* classes .
*
* The class uses the ClassFile library to validate the contents of
* the URLs and streams returned by the methods being tested .
*
* $ java \
* - - add - modules jdk . jdeps \
* - - add - exports jdk . jdeps / com . sun . tools . classfile = ALL - UNNAMED
* / path / to / CLTest . java
*/
package p.q;
import java.io.*;
import java.net.*;
import java.util.*;
import com.sun.tools.classfile.ClassFile;
public class CLTest {
public static void main(String... args) throws Exception {
try {
new CLTest().run();
} catch (Throwable t) {
t.printStackTrace();
System.exit(1 );
}
}
void run() throws Exception {
String[] names = {
"p/q/CLTest.class" ,
"p/q/CLTest$Inner.class" ,
"p/q/CLTest2.class" ,
"java/lang/Object.class" ,
"UNKNOWN.class" ,
"UNKNOWN"
};
for (String name : names) {
testGetResource(name);
testGetResources(name);
testGetResourceAsStream(name);
}
if (errors > 0 ) {
throw new Exception(errors + " errors found" );
}
}
void testGetResource(String name) {
System.err.println("testGetResource: " + name);
try {
ClassLoader cl = getClass().getClassLoader();
URL u = cl.getResource(name);
if (u == null ) {
if (!name.contains("UNKNOWN" )) {
error("resource not found: " + name);
}
return ;
}
checkURL(u);
checkClass(name, u);
} catch (Throwable t) {
t.printStackTrace(System.err);
error("unexpected exception: " + t);
}
}
void testGetResources(String name) {
System.err.println("testGetResources: " + name);
try {
ClassLoader cl = getClass().getClassLoader();
Enumeration<URL> e = cl.getResources(name);
List<URL> list = new ArrayList<>();
while (e.hasMoreElements()) {
list.add(e.nextElement());
}
switch (list.size()) {
case 0 :
if (!name.contains("UNKNOWN" )) {
error("resource not found: " + name);
}
break ;
case 1 :
checkClass(name, list.get(0 ));
break ;
default :
error("unexpected resources found: " + list);
}
} catch (Throwable t) {
t.printStackTrace(System.err);
error("unexpected exception: " + t);
}
}
void testGetResourceAsStream(String name) {
System.err.println("testGetResourceAsStream: " + name);
try {
ClassLoader cl = getClass().getClassLoader();
try (InputStream in = cl.getResourceAsStream(name)) {
if (in == null ) {
if (!name.contains("UNKNOWN" )) {
error("resource not found: " + name);
}
return ;
}
checkClass(name, in);
}
} catch (Throwable t) {
t.printStackTrace(System.err);
error("unexpected exception: " + t);
}
}
void checkClass(String name, URL u) throws Exception {
try (InputStream in = u.openConnection().getInputStream()) {
checkClass(name, in);
}
}
void checkClass(String name, InputStream in) throws Exception {
ClassFile cf = ClassFile.read(in);
System.err.println(" class " + cf.getName());
if (!name.equals(cf.getName() + ".class" )) {
error("unexpected class found: " + cf.getName());
}
}
void checkURL(URL url) {
try {
// verify the URL is formatted strictly according to RFC2396
url.toURI();
} catch (URISyntaxException e) {
error("bad URL: " + url + "; " + e);
}
}
void error(String message) {
System.err.println("Error: " + message);
errors++;
}
int errors = 0 ;
class Inner { }
}
class CLTest2 { }
Messung V0.5 in Prozent C=99 H=74 G=87
¤ Dauer der Verarbeitung: 0.17 Sekunden
(vorverarbeitet am 2026-10-11)
¤
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