Java Logger.getUseParentHandlers方法代码示例

import java.util.logging.Logger; //导入方法依赖的package包/类
public void reset() {
    // Reset system properties.
    System.setProperties(null);

    // From "L" release onwards, calling System.setProperties(null) clears the java.io.tmpdir,
    // so we set it again. No-op on earlier releases.
    System.setProperty("java.io.tmpdir", tmpDir);

    if (JAVA_RUNTIME_VERSION != null) {
        System.setProperty("java.runtime.version", JAVA_RUNTIME_VERSION);
    }
    if (JAVA_VM_INFO != null) {
        System.setProperty("java.vm.info", JAVA_VM_INFO);
    }
    if (JAVA_VM_VERSION != null) {
        System.setProperty("java.vm.version", JAVA_VM_VERSION);
    }
    if (JAVA_VM_VENDOR != null) {
        System.setProperty("java.vm.vendor", JAVA_VM_VENDOR);
    }
    if (JAVA_VM_NAME != null) {
        System.setProperty("java.vm.name", JAVA_VM_NAME);
    }

    // Require writable java.home and user.dir directories for preferences
    if ("Dalvik".equals(System.getProperty("java.vm.name"))) {
        String javaHome = tmpDir + "/java.home";
        IoUtils.safeMkdirs(new File(javaHome));
        System.setProperty("java.home", javaHome);
    }
    String userHome = System.getProperty("user.home");
    if (userHome.length() == 0) {
        userHome = tmpDir + "/user.home";
        IoUtils.safeMkdirs(new File(userHome));
        System.setProperty("user.home", userHome);
    }

    // Localization
    Locale.setDefault(Locale.US);
    TimeZone.setDefault(TimeZone.getTimeZone("America/Los_Angeles"));

    // Preferences
    // Temporarily silence the java.util.prefs logger, which otherwise emits
    // an unactionable warning. See RI bug 4751540.
    Logger loggerToMute = Logger.getLogger("java.util.prefs");
    boolean usedParentHandlers = loggerToMute.getUseParentHandlers();
    loggerToMute.setUseParentHandlers(false);
    try {
        // resetPreferences(Preferences.systemRoot());
        resetPreferences(Preferences.userRoot());
    } finally {
        loggerToMute.setUseParentHandlers(usedParentHandlers);
    }

    // HttpURLConnection
    Authenticator.setDefault(null);
    CookieHandler.setDefault(null);
    ResponseCache.setDefault(null);
    HttpsURLConnection.setDefaultHostnameVerifier(defaultHostnameVerifier);
    HttpsURLConnection.setDefaultSSLSocketFactory(defaultSSLSocketFactory);

    // Logging
    LogManager.getLogManager().reset();
    Logger.getLogger("").addHandler(new ConsoleHandler());

    // Cleanup to force CloseGuard warnings etc
    System.gc();
    System.runFinalization();
}
 

import java.util.logging.Logger; //导入方法依赖的package包/类
public static void main(String[] args) {
    System.setSecurityManager(new SecurityManager());
    Logger anonymous = Logger.getAnonymousLogger();

    final TestHandler handler = new TestHandler();
    final TestFilter filter = new TestFilter();
    final ResourceBundle bundle = ResourceBundle.getBundle(TestBundle.class.getName());
    anonymous.setLevel(Level.FINEST);
    anonymous.addHandler(handler);
    anonymous.setFilter(filter);
    anonymous.setUseParentHandlers(true);
    anonymous.setResourceBundle(bundle);

    if (anonymous.getLevel() != Level.FINEST) {
        throw new RuntimeException("Unexpected level: " + anonymous.getLevel());
    } else {
        System.out.println("Got expected level: " + anonymous.getLevel());
    }
    if (!Arrays.asList(anonymous.getHandlers()).contains(handler)) {
        throw new RuntimeException("Expected handler not found in: "
                + Arrays.asList(anonymous.getHandlers()));
    } else {
        System.out.println("Got expected handler in: " + Arrays.asList(anonymous.getHandlers()));
    }
    if (anonymous.getFilter() != filter) {
        throw new RuntimeException("Unexpected filter: " + anonymous.getFilter());
    } else {
        System.out.println("Got expected filter: " + anonymous.getFilter());
    }
    if (!anonymous.getUseParentHandlers()) {
        throw new RuntimeException("Unexpected flag: " + anonymous.getUseParentHandlers());
    } else {
        System.out.println("Got expected flag: " + anonymous.getUseParentHandlers());
    }
    if (anonymous.getResourceBundle() != bundle) {
        throw new RuntimeException("Unexpected bundle: " + anonymous.getResourceBundle());
    } else {
        System.out.println("Got expected bundle: " + anonymous.getResourceBundle());
    }
    try {
        anonymous.setParent(Logger.getLogger("foo.bar"));
        throw new RuntimeException("Expected SecurityException not raised!");
    } catch (SecurityException x) {
        System.out.println("Got expected exception: " + x);
    }
    if (anonymous.getParent() != Logger.getLogger("")) {
        throw new RuntimeException("Unexpected parent: " + anonymous.getParent());
    } else {
        System.out.println("Got expected parent: " + anonymous.getParent());
    }
}