Example usage for java.net URLClassLoader URLClassLoader

Introduction

In this page you can find the example usage for java.net URLClassLoader URLClassLoader.

Prototype

public URLClassLoader(URL[] urls) 

Source Link

Document

Constructs a new URLClassLoader for the specified URLs using the default delegation parent ClassLoader .

Usage

From source file:Main.java

public static void main(String[] argv) throws Exception {
    File file = new File("c:\\");

    URL url = file.toURI().toURL();
    URL[] urls = new URL[] { url };

    ClassLoader cl = new URLClassLoader(urls);

    Class cls = cl.loadClass("com.mycompany.MyClass");
}

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From source file:Main.java

public static void main(String[] argv) throws Exception {
    File file = new File("c:\\class\\");
    URL url = file.toURI().toURL();
    URL[] urls = new URL[] { url };
    ClassLoader loader = new URLClassLoader(urls);
    Class cls = loader.loadClass("user.informatin.Class");
}

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From source file:Main.java

static public void main(String args[]) throws Exception {
    URL myurl[] = { new URL("file:///C:/CH3/ClassLoader/web/"), new URL("http://www.java2s.edu/~xyx/test/") };
    URLClassLoader x = new URLClassLoader(myurl);
    Class c = x.loadClass("TestURL");

    Class getArg1[] = { (new String[1]).getClass() };
    Method m = c.getMethod("main", getArg1);
    String[] my1 = { "arg1 passed", "arg2 passed" };
    Object myarg1[] = { my1 };//from  w  w  w.j a v  a 2  s  .  c  o m
    m.invoke(null, myarg1);

    Object ob = c.newInstance();
    Class arg2[] = {};
    Method m2 = c.getMethod("tt", arg2);
    m2.invoke(ob, null);

    Class arg3[] = { (new String()).getClass(), int.class };
    Method m3 = c.getMethod("tt", arg3);
    Object myarg2[] = { "Arg1", new Integer(100) };
    m3.invoke(ob, myarg2);
}

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From source file:Main.java

  public static void main(String[] argv) throws Exception {
  File file = new File("c:\\");

  URL url = file.toURI().toURL(); 
  URL[] urls = new URL[] { url };

  ClassLoader cl = new URLClassLoader(urls);

  Class cls = cl.loadClass("com.mycompany.MyClass");
}

---

From source file:MyClass.java

public static void main(String[] argv) throws Exception {

    URL[] urls = null;/* w  w  w  .  ja v  a 2s  . c  o  m*/

    File dir = new File(System.getProperty("user.dir") + File.separator + "dir" + File.separator);
    URL url = dir.toURI().toURL();
    urls = new URL[] { url };

    ClassLoader cl = new URLClassLoader(urls);

    Class cls = cl.loadClass("MyClass");

    MyClass myObj = (MyClass) cls.newInstance();

}

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From source file:MinAppletviewer.java

public static void main(String args[]) throws Exception {
    AppSupport theAppSupport = new AppSupport();
    JFrame f = new JFrame();
    URL toload = new URL(args[0]);
    String host = toload.getHost();
    int port = toload.getPort();
    String protocol = toload.getProtocol();
    String path = toload.getFile();
    int join = path.lastIndexOf('/');
    String file = path.substring(join + 1);
    path = path.substring(0, join + 1);/* w  w  w  . j a  v  a  2s.  c om*/

    theAppSupport.setCodeBase(new URL(protocol, host, port, path));
    theAppSupport.setDocumentBase(theAppSupport.getCodeBase());

    URL[] bases = { theAppSupport.getCodeBase() };
    URLClassLoader loader = new URLClassLoader(bases);
    Class theAppletClass = loader.loadClass(file);
    Applet theApplet = (Applet) (theAppletClass.newInstance());

    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    f.add(theApplet, BorderLayout.CENTER);

    theApplet.setStub(theAppSupport);

    f.setSize(200, 200);
    f.setVisible(true);
    theApplet.init();
    theApplet.start();
}

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From source file:com.mirth.connect.cli.launcher.CommandLineLauncher.java

public static void main(String[] args) {
    System.setProperty("log4j.configuration", "log4j-cli.properties");
    logger = Logger.getLogger(CommandLineLauncher.class);

    try {/*  w  ww  .j ava2 s  .co m*/
        ManifestFile mirthCliJar = new ManifestFile("cli-lib/mirth-cli.jar");
        ManifestFile mirthClientCoreJar = new ManifestFile("cli-lib/mirth-client-core.jar");
        ManifestDirectory cliLibDir = new ManifestDirectory("cli-lib");
        cliLibDir.setExcludes(new String[] { "mirth-client-core.jar" });

        ManifestEntry[] manifest = new ManifestEntry[] { mirthCliJar, mirthClientCoreJar, cliLibDir };

        List<URL> classpathUrls = new ArrayList<URL>();
        addManifestToClasspath(manifest, classpathUrls);
        addSharedLibsToClasspath(classpathUrls);
        URLClassLoader classLoader = new URLClassLoader(classpathUrls.toArray(new URL[classpathUrls.size()]));
        Class<?> cliClass = classLoader.loadClass("com.mirth.connect.cli.CommandLineInterface");
        Constructor<?>[] constructors = cliClass.getDeclaredConstructors();

        for (int i = 0; i < constructors.length; i++) {
            Class<?> parameters[] = constructors[i].getParameterTypes();

            if (parameters.length == 1) {
                constructors[i].newInstance(new Object[] { args });
                i = constructors.length;
            }
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
}

---

From source file:org.kaazing.k3po.launcher.Launcher.java

/**
 * Main entry point to running K3PO.//from  ww  w .jav a 2 s  .c om
 * @param args to run with
 * @throws Exception if fails to run
 */
public static void main(String... args) throws Exception {
    Options options = createOptions();

    try {
        Parser parser = new PosixParser();
        CommandLine cmd = parser.parse(options, args);

        if (cmd.hasOption("version")) {
            System.out.println("Version: " + Launcher.class.getPackage().getImplementationVersion());
        }

        String scriptPathEntries = cmd.getOptionValue("scriptpath", "src/test/scripts");
        String[] scriptPathEntryArray = scriptPathEntries.split(";");
        List<URL> scriptUrls = new ArrayList<>();

        for (String scriptPathEntry : scriptPathEntryArray) {
            File scriptEntryFilePath = new File(scriptPathEntry);
            scriptUrls.add(scriptEntryFilePath.toURI().toURL());
        }

        String controlURI = cmd.getOptionValue("control");
        if (controlURI == null) {
            controlURI = "tcp://localhost:11642";
        }

        boolean verbose = cmd.hasOption("verbose");

        URLClassLoader scriptLoader = new URLClassLoader(scriptUrls.toArray(new URL[0]));
        RobotServer server = new RobotServer(URI.create(controlURI), verbose, scriptLoader);
        server.start();
        server.join();
    } catch (ParseException ex) {
        HelpFormatter helpFormatter = new HelpFormatter();
        helpFormatter.printHelp(Launcher.class.getSimpleName(), options, true);
    }

}

---

From source file:com.mirth.connect.server.launcher.MirthLauncher.java

public static void main(String[] args) {
    try {/*w  w w . jav  a2 s .c  o m*/
        try {
            uninstallPendingExtensions();
            installPendingExtensions();
        } catch (Exception e) {
            logger.error("Error uninstalling or installing pending extensions.", e);
        }

        Properties mirthProperties = new Properties();
        String includeCustomLib = null;

        try {
            mirthProperties.load(new FileInputStream(new File(MIRTH_PROPERTIES_FILE)));
            includeCustomLib = mirthProperties.getProperty(PROPERTY_INCLUDE_CUSTOM_LIB);
            createAppdataDir(mirthProperties);
        } catch (Exception e) {
            logger.error("Error creating the appdata directory.", e);
        }

        ManifestFile mirthServerJar = new ManifestFile("server-lib/mirth-server.jar");
        ManifestFile mirthClientCoreJar = new ManifestFile("server-lib/mirth-client-core.jar");
        ManifestDirectory serverLibDir = new ManifestDirectory("server-lib");
        serverLibDir.setExcludes(new String[] { "mirth-client-core.jar" });

        List<ManifestEntry> manifestList = new ArrayList<ManifestEntry>();
        manifestList.add(mirthServerJar);
        manifestList.add(mirthClientCoreJar);
        manifestList.add(serverLibDir);

        // We want to include custom-lib if the property isn't found, or if it equals "true"
        if (includeCustomLib == null || Boolean.valueOf(includeCustomLib)) {
            manifestList.add(new ManifestDirectory("custom-lib"));
        }

        ManifestEntry[] manifest = manifestList.toArray(new ManifestEntry[manifestList.size()]);

        // Get the current server version
        JarFile mirthClientCoreJarFile = new JarFile(mirthClientCoreJar.getName());
        Properties versionProperties = new Properties();
        versionProperties.load(mirthClientCoreJarFile
                .getInputStream(mirthClientCoreJarFile.getJarEntry("version.properties")));
        String currentVersion = versionProperties.getProperty("mirth.version");

        List<URL> classpathUrls = new ArrayList<URL>();
        addManifestToClasspath(manifest, classpathUrls);
        addExtensionsToClasspath(classpathUrls, currentVersion);
        URLClassLoader classLoader = new URLClassLoader(classpathUrls.toArray(new URL[classpathUrls.size()]));
        Class<?> mirthClass = classLoader.loadClass("com.mirth.connect.server.Mirth");
        Thread mirthThread = (Thread) mirthClass.newInstance();
        mirthThread.setContextClassLoader(classLoader);
        mirthThread.start();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

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From source file:org.apache.commons.jci.examples.commandline.CommandlineCompiler.java

public static void main(String[] args) throws Exception {

    final Options options = new Options();

    options.addOption(OptionBuilder.withArgName("a.jar:b.jar").hasArg().withValueSeparator(':')
            .withDescription("Specify where to find user class files").create("classpath"));

    options.addOption(OptionBuilder.withArgName("release").hasArg()
            .withDescription("Provide source compatibility with specified release").create("source"));

    options.addOption(OptionBuilder.withArgName("release").hasArg()
            .withDescription("Generate class files for specific VM version").create("target"));

    options.addOption(OptionBuilder.withArgName("path").hasArg()
            .withDescription("Specify where to find input source files").create("sourcepath"));

    options.addOption(OptionBuilder.withArgName("directory").hasArg()
            .withDescription("Specify where to place generated class files").create("d"));

    options.addOption(OptionBuilder.withArgName("num").hasArg()
            .withDescription("Stop compilation after these number of errors").create("Xmaxerrs"));

    options.addOption(OptionBuilder.withArgName("num").hasArg()
            .withDescription("Stop compilation after these number of warning").create("Xmaxwarns"));

    options.addOption(OptionBuilder.withDescription("Generate no warnings").create("nowarn"));

    //        final HelpFormatter formatter = new HelpFormatter();
    //        formatter.printHelp("jci", options);

    final CommandLineParser parser = new GnuParser();
    final CommandLine cmd = parser.parse(options, args, true);

    ClassLoader classloader = CommandlineCompiler.class.getClassLoader();
    File sourcepath = new File(".");
    File targetpath = new File(".");
    int maxerrs = 10;
    int maxwarns = 10;
    final boolean nowarn = cmd.hasOption("nowarn");

    final JavaCompiler compiler = new JavaCompilerFactory().createCompiler("eclipse");
    final JavaCompilerSettings settings = compiler.createDefaultSettings();

    for (Iterator it = cmd.iterator(); it.hasNext();) {
        final Option option = (Option) it.next();
        if ("classpath".equals(option.getOpt())) {
            final String[] values = option.getValues();
            final URL[] urls = new URL[values.length];
            for (int i = 0; i < urls.length; i++) {
                urls[i] = new File(values[i]).toURL();
            }//from w ww .  j a va 2  s. c  om
            classloader = new URLClassLoader(urls);
        } else if ("source".equals(option.getOpt())) {
            settings.setSourceVersion(option.getValue());
        } else if ("target".equals(option.getOpt())) {
            settings.setTargetVersion(option.getValue());
        } else if ("sourcepath".equals(option.getOpt())) {
            sourcepath = new File(option.getValue());
        } else if ("d".equals(option.getOpt())) {
            targetpath = new File(option.getValue());
        } else if ("Xmaxerrs".equals(option.getOpt())) {
            maxerrs = Integer.parseInt(option.getValue());
        } else if ("Xmaxwarns".equals(option.getOpt())) {
            maxwarns = Integer.parseInt(option.getValue());
        }
    }

    final ResourceReader reader = new FileResourceReader(sourcepath);
    final ResourceStore store = new FileResourceStore(targetpath);

    final int maxErrors = maxerrs;
    final int maxWarnings = maxwarns;
    compiler.setCompilationProblemHandler(new CompilationProblemHandler() {
        int errors = 0;
        int warnings = 0;

        public boolean handle(final CompilationProblem pProblem) {

            if (pProblem.isError()) {
                System.err.println(pProblem);

                errors++;

                if (errors >= maxErrors) {
                    return false;
                }
            } else {
                if (!nowarn) {
                    System.err.println(pProblem);
                }

                warnings++;

                if (warnings >= maxWarnings) {
                    return false;
                }
            }

            return true;
        }
    });

    final String[] resource = cmd.getArgs();

    for (int i = 0; i < resource.length; i++) {
        System.out.println("compiling " + resource[i]);
    }

    final CompilationResult result = compiler.compile(resource, reader, store, classloader);

    System.out.println(result.getErrors().length + " errors");
    System.out.println(result.getWarnings().length + " warnings");

}

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