jdk/test/java/net/URLClassLoader/profiles/Basic.java
changeset 19448 f7bcbf987d5c
parent 19353 ee92e7cf8d35
parent 19447 f2da7f97e104
child 19450 e92c5abf8936
child 19595 4565983c4629
child 19779 fe0b98be61a0
child 20101 4d045bddfaa4
equal deleted inserted replaced
19353:ee92e7cf8d35 19448:f7bcbf987d5c
     1 /*
       
     2  * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
       
     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
       
     4  *
       
     5  * This code is free software; you can redistribute it and/or modify it
       
     6  * under the terms of the GNU General Public License version 2 only, as
       
     7  * published by the Free Software Foundation.
       
     8  *
       
     9  * This code is distributed in the hope that it will be useful, but WITHOUT
       
    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
       
    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
       
    12  * version 2 for more details (a copy is included in the LICENSE file that
       
    13  * accompanied this code).
       
    14  *
       
    15  * You should have received a copy of the GNU General Public License version
       
    16  * 2 along with this work; if not, write to the Free Software Foundation,
       
    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
       
    18  *
       
    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
       
    20  * or visit www.oracle.com if you need additional information or have any
       
    21  * questions.
       
    22  */
       
    23 
       
    24 import java.net.*;
       
    25 import java.io.File;
       
    26 import java.util.jar.*;
       
    27 
       
    28 /**
       
    29  * Attempts to load classes or resources from a JAR file. The load should succeed
       
    30  * if the runtime supports the profile indicated by the Profile attribute, fail
       
    31  * with UnsupportedProfileException otherwise.
       
    32  */
       
    33 
       
    34 public class Basic {
       
    35 
       
    36     static int indexOf(String profile) {
       
    37         if (profile == null || "compact1".equals(profile)) return 1;
       
    38         if ("compact2".equals(profile)) return 2;
       
    39         if ("compact3".equals(profile)) return 3;
       
    40         if ("".equals(profile)) return 4;
       
    41         return Integer.MAX_VALUE;  // unknown profile name
       
    42     }
       
    43 
       
    44     public static void main(String[] args) throws Exception {
       
    45         if (args.length < 2)
       
    46             throw new RuntimeException("Usage: java <jarfile> <classname>");
       
    47         String jar = args[0];
       
    48         String cn = args[1];
       
    49 
       
    50         File lib = new File(jar);
       
    51         URL url = lib.toURI().toURL();
       
    52         URL urls[] = { url };
       
    53 
       
    54         // ## replace this if there is a standard way to determine the profile
       
    55         String thisProfile = sun.misc.Version.profileName();
       
    56 
       
    57         String jarProfile = null;
       
    58         try (JarFile jf = new JarFile(lib)) {
       
    59             Manifest manifest = jf.getManifest();
       
    60             if (manifest != null) {
       
    61                 Attributes mainAttrs = manifest.getMainAttributes();
       
    62                 if (mainAttrs != null) {
       
    63                     jarProfile = mainAttrs.getValue(Attributes.Name.PROFILE);
       
    64                 }
       
    65             }
       
    66         }
       
    67 
       
    68         boolean shouldFail = indexOf(thisProfile) < indexOf(jarProfile);
       
    69 
       
    70         try (URLClassLoader cl = new URLClassLoader(urls)) {
       
    71             System.out.format("Loading %s from %s ...%n", cn, jar);
       
    72             Class<?> c = Class.forName(cn, true, cl);
       
    73             System.out.println(c);
       
    74             if (shouldFail)
       
    75                 throw new RuntimeException("UnsupportedProfileException expected");
       
    76         } catch (UnsupportedProfileException x) {
       
    77             if (!shouldFail)
       
    78                 throw x;
       
    79             System.out.println("UnsupportedProfileException thrown as expected");
       
    80         }
       
    81 
       
    82         try (URLClassLoader cl = new URLClassLoader(urls)) {
       
    83             System.out.format("Loading resource from %s ...%n", jar);
       
    84             URL r = cl.findResource("META-INF/MANIFEST.MF");
       
    85             System.out.println(r);
       
    86             if (shouldFail)
       
    87                 throw new RuntimeException("UnsupportedProfileException expected");
       
    88         } catch (UnsupportedProfileException x) {
       
    89             if (!shouldFail)
       
    90                 throw x;
       
    91             System.out.println("UnsupportedProfileException thrown as expected");
       
    92         }
       
    93     }
       
    94 }
       
    95