Examples of java.util.logging.Logger.addHandler()

java.util.logging.Logger.addHandler()
Add a log Handler to receive logging messages.
By default, Loggers also send their output to their parent logger. Typically the root Logger is configured with a set of Handlers that essentially act as default handlers for all loggers. @param handler a logging Handler @exception SecurityException if a security manager exists and ifthe caller does not have LoggingPermission("control").

        TestHandler handler = new TestHandler();


        expResult.setOccasion(MailSpecifier.ON_END);
        setPrivateField(instance, "mailSpecifier", expResult.clone());
        log.setLevel(Level.ALL);
        log.addHandler(handler);
        handler.setLevel(Level.ALL);
        value = "xyz";
        result = callPrivateMethod(instance, "parseMail", new Class[]{ String.class }, new Object[]{ value });
        assertEquals("The parseMail() method did not parse the value correctly", expResult, result);
        assertEquals("The parseMail() method did log an appropriate error message", 1, handler.messages.size());

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        TestHandler handler = new TestHandler();


        expResult.setMin(10);
        setPrivateField(instance, "taskSpecifier", expResult.clone());
        log.setLevel(Level.ALL);
        log.addHandler(handler);
        handler.setLevel(Level.ALL);
        value = "xyz";
        result = callPrivateMethod(instance, "parseTaskMin", new Class[]{ String.class }, new Object[]{ value });
        assertEquals("The parseTaskMin() method did not parse the value correctly", expResult, result);
        assertEquals("The parseTaskMin() method did log an appropriate error message", 1, handler.messages.size());

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        TestHandler handler = new TestHandler();


        expResult.setMax(10);
        setPrivateField(instance, "taskSpecifier", expResult.clone());
        log.setLevel(Level.ALL);
        log.addHandler(handler);
        handler.setLevel(Level.ALL);
        value = "xyz";
        result = callPrivateMethod(instance, "parseTaskMax", new Class[]{ String.class }, new Object[]{ value });
        assertEquals("The parseTaskMax() method did not parse the value correctly", expResult, result);
        assertEquals("The parseTaskMax() method did log an appropriate error message", 1, handler.messages.size());

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        TestHandler handler = new TestHandler();


        expResult.setStep(10);
        setPrivateField(instance, "taskSpecifier", expResult.clone());
        log.setLevel(Level.ALL);
        log.addHandler(handler);
        handler.setLevel(Level.ALL);
        value = "xyz";
        result = callPrivateMethod(instance, "parseTaskStep", new Class[]{ String.class }, new Object[]{ value });
        assertEquals("The parseTaskStep() method did not parse the value correctly", expResult, result);
        assertEquals("The parseTaskStep() method did log an appropriate error message", 1, handler.messages.size());

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        TestHandler handler = new TestHandler();


        expResult.setRangeMin(10);
        setPrivateField(instance, "pe", expResult.clone());
        log.setLevel(Level.ALL);
        log.addHandler(handler);
        handler.setLevel(Level.ALL);
        value = "xyz";
        result = callPrivateMethod(instance, "parsePeMin", new Class[]{ String.class }, new Object[]{ value });
        assertEquals("The parsePeMin() method did not parse the value correctly", expResult, result);
        assertEquals("The parsePeMin() method did log an appropriate error message", 1, handler.messages.size());

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        TestHandler handler = new TestHandler();


        expResult.setRangeMax(10);
        setPrivateField(instance, "pe", expResult.clone());
        log.setLevel(Level.ALL);
        log.addHandler(handler);
        handler.setLevel(Level.ALL);
        value = "xyz";
        result = callPrivateMethod(instance, "parsePeMax", new Class[]{ String.class }, new Object[]{ value });
        assertEquals("The parsePeMax() method did not parse the value correctly", expResult, result);
        assertEquals("The parsePeMax() method did log an appropriate error message", 1, handler.messages.size());

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        Logger log = Logger.getLogger("com.sun.grid.Jsv");
        TestHandler handler = new TestHandler();


        log.setLevel(Level.ALL);
        log.addHandler(handler);
        handler.setLevel(Level.ALL);
        value = "xyz";
        result = callPrivateMethod(instance, "parseVerification", new Class[]{ String.class }, new Object[]{ value });
        assertNull("The parseVerification() method did not parse the value correctly", result);
        assertEquals("The parseVerification() method did log an appropriate error message", 1, handler.messages.size());

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        Logger log = Logger.getLogger("com.sun.grid.Jsv");
        TestHandler handler = new TestHandler();


        instance.setIn(in);
        instance.setOut(out);
        log.addHandler(handler);
        log.setLevel(Level.ALL);
        handler.setLevel(Level.ALL);


        // START
        instance.parse(listener);

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        PrintStream out = new PrintStream(bao);
        Logger log = Logger.getLogger("com.sun.grid.Jsv");
        TestHandler handler = new TestHandler();


        instance.setOut(out);
        log.addHandler(handler);
        log.setLevel(Level.ALL);
        handler.setLevel(Level.ALL);
        callPrivateMethod(instance, JsvManager.class, "sendCommand", new Class[]{String.class}, new Object[]{expected});
        assertEquals("sendCommand() did not send the expected value: ", expected + "\n", bao.toString());
        assertEquals("sendCommand() did not log an appropriate log message: ", 1, handler.messages.size());

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        Field addField = opClass.getDeclaredField("ADD");
        Logger log = Logger.getLogger("com.sun.grid.Jsv");
        TestHandler handler = new TestHandler();


        instance.setOut(out);
        log.addHandler(handler);
        log.setLevel(Level.ALL);
        handler.setLevel(Level.ALL);


        callPrivateMethod(instance, JsvManager.class, "sendEnvironment", new Class[]{opClass, String.class, String.class}, new Object[]{addField.get(null), "test1", "test2"});
        assertEquals("sendEnvironment() did not send the expected value", expected + "\n", bao.toString());

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