Examples of java.util.logging.ConsoleHandler

java.util.logging.ConsoleHandler
This Handler publishes log records to System.err. By default the SimpleFormatter is used to generate brief summaries.
Configuration: By default each ConsoleHandler is initialized using the following LogManager configuration properties. If properties are not defined (or have invalid values) then the specified default values are used.
- java.util.logging.ConsoleHandler.level specifies the default level for the Handler (defaults to Level.INFO).
- java.util.logging.ConsoleHandler.filter specifies the name of a Filter class to use (defaults to no Filter).
- java.util.logging.ConsoleHandler.formatter specifies the name of a Formatter class to use (defaults to java.util.logging.SimpleFormatter).
- java.util.logging.ConsoleHandler.encoding the name of the character set encoding to use (defaults to the default platform encoding).
@version 1.13, 11/17/05 @since 1.4

    Properties p = new Properties();
    p.put("java.util.logging.ConsoleHandler.formatter", className
        + "$MockFormatter");
    LogManager.getLogManager().readConfiguration(
        EnvironmentHelper.PropertiesToInputStream(p));
    ConsoleHandler h = new ConsoleHandler();
    SecurityManager oldMan = System.getSecurityManager();
    System.setSecurityManager(new MockSecurityManager());
    try {
      h.close();
    } finally {
      System.setSecurityManager(oldMan);
    }
  }

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    Properties p = new Properties();
    p.put("java.util.logging.ConsoleHandler.formatter", className
        + "$MockFormatter");
    LogManager.getLogManager().readConfiguration(
        EnvironmentHelper.PropertiesToInputStream(p));
    ConsoleHandler h = new ConsoleHandler();


    LogRecord r = new LogRecord(Level.INFO, "testPublish_NoFilter");
    h.setLevel(Level.INFO);
    h.publish(r);
    h.flush();
    assertEquals("MockFormatter_Head" + "testPublish_NoFilter",
        this.errSubstituteStream.toString());


    h.setLevel(Level.WARNING);
    h.publish(r);
    h.flush();
    assertEquals("MockFormatter_Head" + "testPublish_NoFilter",
        this.errSubstituteStream.toString());


    h.setLevel(Level.CONFIG);
    h.publish(r);
    h.flush();
    assertEquals("MockFormatter_Head" + "testPublish_NoFilter"
        + "testPublish_NoFilter", this.errSubstituteStream.toString());


    r.setLevel(Level.OFF);
    h.setLevel(Level.OFF);
    h.publish(r);
    h.flush();
    assertEquals("MockFormatter_Head" + "testPublish_NoFilter"
        + "testPublish_NoFilter", this.errSubstituteStream.toString());
  }

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    Properties p = new Properties();
    p.put("java.util.logging.ConsoleHandler.formatter", className
        + "$MockFormatter");
    LogManager.getLogManager().readConfiguration(
        EnvironmentHelper.PropertiesToInputStream(p));
    ConsoleHandler h = new ConsoleHandler();
    h.setFilter(new MockFilter());


    System.setErr(new PrintStream(new ByteArrayOutputStream()));


    LogRecord r = new LogRecord(Level.INFO, "testPublish_WithFilter");
    h.setLevel(Level.INFO);
    h.publish(r);
    assertNull(CallVerificationStack.getInstance().pop());
    assertSame(r, CallVerificationStack.getInstance().pop());
    assertEquals("", this.errSubstituteStream.toString());
  }

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    Properties p = new Properties();
    p.put("java.util.logging.ConsoleHandler.formatter", className
        + "$MockFormatter");
    LogManager.getLogManager().readConfiguration(
        EnvironmentHelper.PropertiesToInputStream(p));
    ConsoleHandler h = new ConsoleHandler();
    h.setFilter(new MockFilter());


    LogRecord r = new LogRecord(Level.INFO, "testPublish_WithFilter");
    h.setLevel(Level.INFO);
    h.publish(r);
    assertNull(CallVerificationStack.getInstance().pop());
    assertSame(r, CallVerificationStack.getInstance().pop());
    assertEquals("", this.errSubstituteStream.toString());


    h.setLevel(Level.WARNING);
    h.publish(r);
    assertNull(CallVerificationStack.getInstance().pop());
    assertTrue(CallVerificationStack.getInstance().empty());
    assertEquals("", this.errSubstituteStream.toString());


    h.setLevel(Level.CONFIG);
    h.publish(r);
    assertNull(CallVerificationStack.getInstance().pop());
    assertSame(r, CallVerificationStack.getInstance().pop());
    assertEquals("", this.errSubstituteStream.toString());


    r.setLevel(Level.OFF);
    h.setLevel(Level.OFF);
    h.publish(r);
    assertNull(CallVerificationStack.getInstance().pop());
    assertEquals("", this.errSubstituteStream.toString());
    assertTrue(CallVerificationStack.getInstance().empty());
  }

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    Properties p = new Properties();
    p.put("java.util.logging.ConsoleHandler.formatter", className
        + "$MockFormatter");
    LogManager.getLogManager().readConfiguration(
        EnvironmentHelper.PropertiesToInputStream(p));
    ConsoleHandler h = new ConsoleHandler();
    h.publish(null);
  }

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    Properties p = new Properties();
    p.put("java.util.logging.ConsoleHandler.formatter", className
        + "$MockFormatter");
    LogManager.getLogManager().readConfiguration(
        EnvironmentHelper.PropertiesToInputStream(p));
    ConsoleHandler h = new ConsoleHandler();
    LogRecord r = new LogRecord(Level.INFO, "");
    h.publish(r);
    h.flush();
    assertEquals("MockFormatter_Head", this.errSubstituteStream.toString());
  }

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    Properties p = new Properties();
    p.put("java.util.logging.ConsoleHandler.formatter", className
        + "$MockFormatter");
    LogManager.getLogManager().readConfiguration(
        EnvironmentHelper.PropertiesToInputStream(p));
    ConsoleHandler h = new ConsoleHandler();
    LogRecord r = new LogRecord(Level.INFO, null);
    h.publish(r);
    h.flush();
    // assertEquals("MockFormatter_Head",
    // this.errSubstituteStream.toString());
  }

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      p.put("java.util.logging.ConsoleHandler.level", "FINE");
      p.put("java.util.logging.ConsoleHandler.formatter", className
          + "$MockFormatter");
      LogManager.getLogManager().readConfiguration(
          EnvironmentHelper.PropertiesToInputStream(p));
      ConsoleHandler h = new ConsoleHandler();
      assertSame(h.getLevel(), Level.FINE);
      LogRecord r1 = new LogRecord(Level.INFO, "testPublish_Record1");
      LogRecord r2 = new LogRecord(Level.INFO, "testPublish_Record2");
      assertTrue(h.isLoggable(r1));
      h.publish(r1);
      assertTrue(bos.toString().indexOf("testPublish_Record1") >= 0);
      h.close();
      // assertFalse(h.isLoggable(r));
      assertTrue(h.isLoggable(r2));
      h.publish(r2);
      assertTrue(bos.toString().indexOf("testPublish_Record2") >= 0);
      h.flush();
      // assertEquals("MockFormatter_Head",
      // this.errSubstituteStream.toString());
    } catch (IOException e) {
      e.printStackTrace();
    } finally {

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                    break;
                }
            }


            if (!found) {
                ConsoleHandler consoleHandler = new ConsoleHandler();
                consoleHandler.setLevel(Level.ALL);
                logger.addHandler(consoleHandler);
            }
        }
    }

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  @Test
  public void testLogger() throws Exception {
    final List<LogRecord> records = new ArrayList<LogRecord>();


    // Tell the logger to log everything
    ConsoleHandler handler = (ConsoleHandler) LogManager.getLogManager().getLogger("")
            .getHandlers()[0];
    java.util.logging.Level oldLevel = handler.getLevel();
    handler.setLevel(Level.ALL);
    // Capture the logging output without actually logging it
    handler.setFilter(new Filter() {
      public boolean isLoggable(LogRecord record) {
        records.add(record);
        return false;
      }
    });


    try {
      JCas jcas = JCasFactory.createJCas();
      createEngine(LoggingCasConsumerChristmasTree.class).process(jcas.getCas());


      assertEquals(10, records.size());
      assertEquals(Level.FINER, records.get(0).getLevel());
      assertEquals(Level.FINER, records.get(1).getLevel());
      assertEquals(Level.FINE, records.get(2).getLevel());
      assertEquals(Level.FINE, records.get(3).getLevel());
      assertEquals(Level.INFO, records.get(4).getLevel());
      assertEquals(Level.INFO, records.get(5).getLevel());
      assertEquals(Level.WARNING, records.get(6).getLevel());
      assertEquals(Level.WARNING, records.get(7).getLevel());
      assertEquals(Level.SEVERE, records.get(8).getLevel());
      assertEquals(Level.SEVERE, records.get(9).getLevel());
    } finally {
      if (oldLevel != null) {
        handler.setLevel(oldLevel);
        handler.setFilter(null);
      }
    }
  }

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