Java Class.getResource Examples

Example #1

File: IndividualClassLoaderTest.java Project: kuanawanda/battlecode-server-1

  @Test
  public void testLoadFromJar() throws Exception {
    File jar = Files.createTempFile("battlecode-test", ".jar").toFile();

    jar.deleteOnExit();

    ZipOutputStream z = new ZipOutputStream(new FileOutputStream(jar));

    ZipEntry classEntry = new ZipEntry("instrumentertest/Nothing.class");

    z.putNextEntry(classEntry);

    IOUtils.copy(
        getClass().getClassLoader().getResourceAsStream("instrumentertest/Nothing.class"), z);

    z.closeEntry();
    z.close();

    IndividualClassLoader jarLoader =
        new IndividualClassLoader(
            "instrumentertest", new IndividualClassLoader.Cache(jar.toURI().toURL()));

    Class<?> jarClass = jarLoader.loadClass("instrumentertest.Nothing");

    URL jarClassLocation = jarClass.getResource("Nothing.class");

    // EXTREMELY scientific

    assertTrue(jarClassLocation.toString().startsWith("jar:"));
    assertTrue(jarClassLocation.toString().contains(jar.toURI().toURL().toString()));
  }