Java内容重新整理删除过期的东西

Java/JavaDemo/codedemo/java/util/concurret/ScheduledExecutorServiceDemo.java

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+package cn.aofeng.demo.java.util.concurret;
+
+import java.util.Date;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.TimeUnit;
+
+import cn.aofeng.demo.util.DateUtil;
+
+/**
+ * {@link ScheduledExecutorService}的使用示例：<br>
+ * 定时任务1：执行过程中会抛出异常。<br>
+ * 定时任务2：执行过程中不会抛出异常。<br>
+ * <br>
+ * 目的：检测java.util.concurrent.ScheduledExecutorService在执行定时任务的过程中，任务内抛出异常没有捕捉时在下一次执行时间到来时，是否可以正常执行。<br>
+ * 测试的JDK版本：1.6.xx。<br>
+ * 结果：通过，相比java.util.Timer，完善地解决了定时任务抛异常的问题。
+ * 
+ * @author <a href="mailto:aofengblog@163.com">聂勇</a>
+ */
+public class ScheduledExecutorServiceDemo {
+
+    public static void main(String[] args) {
+        ScheduledExecutorService timer = Executors.newScheduledThreadPool(2);
+        long delay = computeDelay();
+        timer.schedule(new ThrowExceptionTask(timer), delay, TimeUnit.MILLISECONDS);
+        timer.schedule(new NotThrowExceptionTask(timer), delay, TimeUnit.MILLISECONDS);
+        System.out.println("主线程的功能执行完毕");
+    }
+
+    private static long computeDelay() {
+        Date now = new Date();
+        Date nextMinute = DateUtil.getNextMinute();
+        long delay = nextMinute.getTime() - now.getTime();
+        return delay;
+    }
+
+    static class ThrowExceptionTask implements Runnable {
+
+        private ScheduledExecutorService _timer;
+        
+        public ThrowExceptionTask(ScheduledExecutorService timer) {
+            this._timer = timer;
+        }
+        
+        @Override
+        public void run() {
+            try {
+                System.out.println("任务名:ThrowExceptionTask, 当前时间:"+DateUtil.getCurrentTime());
+                
+                throw new IllegalArgumentException();
+            } finally {
+                _timer.schedule(new ThrowExceptionTask(_timer), computeDelay(), TimeUnit.MILLISECONDS);
+            }
+        }
+        
+    } // end of ThrowExceptionTask
+    
+    static class NotThrowExceptionTask implements Runnable {
+        
+        private ScheduledExecutorService _timer;
+        
+        public NotThrowExceptionTask(ScheduledExecutorService timer) {
+            this._timer = timer;
+        }
+        
+        @Override
+        public void run() {
+            try {
+                System.out.println("任务名:NotThrowExceptionTask, 当前时间:"+DateUtil.getCurrentTime());
+            } finally {
+                _timer.schedule(new NotThrowExceptionTask(_timer), computeDelay(), TimeUnit.MILLISECONDS);
+            }
+        }
+        
+    } // end of NotThrowExceptionTask
+
+}

Java/JavaDemo/codedemo/java/util/forkjoin/HelloForkJoin.java

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+package cn.aofeng.demo.java.util.forkjoin;
+
+import java.util.Arrays;
+import java.util.concurrent.ForkJoinPool;
+import java.util.concurrent.RecursiveTask;
+import java.util.concurrent.TimeUnit;
+
+/**
+ * Fork/Join练习。
+ * 
+ * @author <a href="mailto:aofengblog@163.com">聂勇</a>
+ */
+public class HelloForkJoin extends RecursiveTask<Long> {
+
+    private static final long serialVersionUID = -2386438994963147457L;
+
+    private int[] _intArray;
+    
+    private int _threshold = 10;
+    
+    private long _result = 0;
+    
+    public HelloForkJoin(int[] intArray) {
+        this._intArray = intArray;
+    }
+    
+    @Override
+    protected Long compute() {
+        if (null == _intArray || _intArray.length <= 0) {
+            return 0L;
+        }
+        
+        if (_intArray.length <= _threshold) {   // 如果数组长度小于等于指定的值，执行累加操作
+            for (int item : _intArray) {
+                _result += item;
+            }
+            System.out.println( String.format("线程：%s，累加数组%s中的值，结果：%d", Thread.currentThread(), Arrays.toString(_intArray), _result) );
+        } else {   // 如果数组长度大于指定的值，做任务分解
+            int[] temp = new int[_threshold];
+            System.arraycopy(_intArray, 0, temp, 0, _threshold);
+            HelloForkJoin subTask1 = new HelloForkJoin(temp);
+            subTask1.fork();
+            
+            if (_intArray.length - _threshold > 0) {
+                int remain[] = new int[_intArray.length - _threshold];
+                System.arraycopy(_intArray, _threshold, remain, 0, remain.length);
+                HelloForkJoin task = new HelloForkJoin(remain);
+                task.fork();
+                _result += task.join();
+            }
+            
+            _result += subTask1.join();
+            
+            return _result;
+        }
+        
+        return _result;
+    }
+    
+    public static void main(String[] args) throws InterruptedException {
+        int count = 10000;
+        
+        serialCompute(count);
+        parallelCompute(count);
+    }
+
+    /**
+     * 使用fork/join并行计算数字累加。
+     * 
+     * @param count 数字个数（从1开始）
+     * @throws InterruptedException
+     */
+    private static void parallelCompute(int count)
+            throws InterruptedException {
+        int[] numbers = new int[count];
+        for (int i = 0; i < count; i++) {
+            numbers[i] = i+1;
+        }
+        ForkJoinPool pool = new ForkJoinPool(4);
+        HelloForkJoin task = new HelloForkJoin(numbers);
+        long startTime = System.currentTimeMillis();
+        pool.submit(task);
+        pool.shutdown();
+        pool.awaitTermination(10, TimeUnit.SECONDS);
+        
+        System.out.println( String.format("并行计算结果：%d，耗时：%d毫秒", task._result, System.currentTimeMillis()-startTime) );
+    }
+
+    /**
+     * 使用for循环串行计算数字累加。
+     * 
+     * @param count 数字个数（从1开始） 
+     */
+    private static void serialCompute(int count) {
+        long startTime = System.currentTimeMillis();
+        int sum = 0;
+        for (int i = 0; i < count; i++) {
+            sum += (i+1);
+        }
+        System.out.println( String.format("串行计算结果：%d，耗时：%d毫秒", sum, System.currentTimeMillis()-startTime) );
+    }
+
+}

Java/JavaDemo/codedemo/java/util/future/Future.ucls

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+<?xml version="1.0" encoding="UTF-8"?>
+<class-diagram version="1.1.6" icons="true" always-add-relationships="false" generalizations="true" realizations="true" 
+  associations="true" dependencies="false" nesting-relationships="true">  
+  <interface id="1" language="java" name="java.util.concurrent.Future" project="JavaDemo" 
+    file="/devdata/java/jdk/jdk1.7.0_60/jre/lib/rt.jar" binary="true" corner="BOTTOM_RIGHT">    
+    <position height="-1" width="-1" x="334" y="85"/>    
+    <display autosize="true" stereotype="true" package="true" initial-value="false" signature="true" accessors="true" 
+      visibility="true">      
+      <attributes public="false" package="true" protected="false" private="false" static="false"/>      
+      <operations public="true" package="true" protected="false" private="false" static="false"/>    
+    </display>  
+  </interface>  
+  <class id="2" language="java" name="java.util.concurrent.FutureTask" project="JavaDemo" 
+    file="/devdata/java/jdk/jdk1.7.0_60/jre/lib/rt.jar" binary="true" corner="BOTTOM_RIGHT">    
+    <position height="-1" width="-1" x="521" y="477"/>    
+    <display autosize="true" stereotype="true" package="true" initial-value="false" signature="true" accessors="true" 
+      visibility="true">      
+      <attributes public="false" package="true" protected="false" private="false" static="false"/>      
+      <operations public="true" package="true" protected="false" private="false" static="false"/>    
+    </display>  
+  </class>  
+  <interface id="3" language="java" name="java.util.concurrent.RunnableFuture" project="JavaDemo" 
+    file="/devdata/java/jdk/jdk1.7.0_60/jre/lib/rt.jar" binary="true" corner="BOTTOM_RIGHT">    
+    <position height="-1" width="-1" x="521" y="280"/>    
+    <display autosize="true" stereotype="true" package="true" initial-value="false" signature="true" accessors="true" 
+      visibility="true">      
+      <attributes public="false" package="true" protected="false" private="false" static="false"/>      
+      <operations public="true" package="true" protected="false" private="false" static="false"/>    
+    </display>  
+  </interface>  
+  <interface id="4" language="java" name="java.util.concurrent.RunnableScheduledFuture" project="JavaDemo" 
+    file="/devdata/java/jdk/jdk1.7.0_60/jre/lib/rt.jar" binary="true" corner="BOTTOM_RIGHT">    
+    <position height="-1" width="-1" x="130" y="410"/>    
+    <display autosize="true" stereotype="true" package="true" initial-value="false" signature="true" accessors="true" 
+      visibility="true">      
+      <attributes public="false" package="true" protected="false" private="false" static="false"/>      
+      <operations public="true" package="true" protected="false" private="false" static="false"/>    
+    </display>  
+  </interface>  
+  <interface id="5" language="java" name="java.util.concurrent.ScheduledFuture" project="JavaDemo" 
+    file="/devdata/java/jdk/jdk1.7.0_60/jre/lib/rt.jar" binary="true" corner="BOTTOM_RIGHT">    
+    <position height="-1" width="-1" x="131" y="272"/>    
+    <display autosize="true" stereotype="true" package="true" initial-value="false" signature="true" accessors="true" 
+      visibility="true">      
+      <attributes public="false" package="true" protected="false" private="false" static="false"/>      
+      <operations public="true" package="true" protected="false" private="false" static="false"/>    
+    </display>  
+  </interface>  
+  <interface id="6" language="java" name="java.util.concurrent.Delayed" project="JavaDemo" 
+    file="/devdata/java/jdk/jdk1.7.0_60/jre/lib/rt.jar" binary="true" corner="BOTTOM_RIGHT">    
+    <position height="-1" width="-1" x="131" y="119"/>    
+    <display autosize="true" stereotype="true" package="true" initial-value="false" signature="true" accessors="true" 
+      visibility="true">      
+      <attributes public="false" package="true" protected="false" private="false" static="false"/>      
+      <operations public="true" package="true" protected="false" private="false" static="false"/>    
+    </display>  
+  </interface>  
+  <interface id="7" language="java" name="java.lang.Runnable" project="JavaDemo" 
+    file="/devdata/java/jdk/jdk1.7.0_60/jre/lib/rt.jar" binary="true" corner="BOTTOM_RIGHT">    
+    <position height="-1" width="-1" x="521" y="119"/>    
+    <display autosize="true" stereotype="true" package="true" initial-value="false" signature="true" accessors="true" 
+      visibility="true">      
+      <attributes public="false" package="true" protected="false" private="false" static="false"/>      
+      <operations public="true" package="true" protected="false" private="false" static="false"/>    
+    </display>  
+  </interface>  
+  <generalization id="8">    
+    <end type="SOURCE" refId="4"/>    
+    <end type="TARGET" refId="5"/>  
+  </generalization>  
+  <generalization id="9">    
+    <end type="SOURCE" refId="3"/>    
+    <end type="TARGET" refId="7"/>  
+  </generalization>  
+  <generalization id="10">    
+    <end type="SOURCE" refId="4"/>    
+    <end type="TARGET" refId="3"/>  
+  </generalization>  
+  <generalization id="11">    
+    <end type="SOURCE" refId="5"/>    
+    <end type="TARGET" refId="6"/>  
+  </generalization>  
+  <generalization id="12">    
+    <end type="SOURCE" refId="5"/>    
+    <end type="TARGET" refId="1"/>  
+  </generalization>  
+  <generalization id="13">    
+    <end type="SOURCE" refId="3"/>    
+    <end type="TARGET" refId="1"/>  
+  </generalization>  
+  <realization id="14">    
+    <end type="SOURCE" refId="2"/>    
+    <end type="TARGET" refId="3"/>  
+  </realization>  
+  <classifier-display autosize="true" stereotype="true" package="true" initial-value="false" signature="true" 
+    accessors="true" visibility="true">    
+    <attributes public="false" package="true" protected="false" private="false" static="false"/>    
+    <operations public="true" package="true" protected="false" private="false" static="false"/>  
+  </classifier-display>  
+  <association-display labels="true" multiplicity="true"/>
+</class-diagram>

Java/JavaDemo/codedemo/java/util/future/HelloFuture.java

@@ -0,0 +1,106 @@
+package cn.aofeng.demo.java.util.future;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.concurrent.Callable;
+import java.util.concurrent.CancellationException;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.Future;
+import java.util.concurrent.TimeUnit;
+
+import org.apache.log4j.Logger;
+
+/**
+ * Future、Callable练习。
+ * 
+ * @author <a href="mailto:aofengblog@163.com">聂勇</a>
+ */
+public class HelloFuture {
+
+    private static Logger _logger = Logger.getLogger(HelloFuture.class);
+
+    /**
+     * @param args
+     * @throws InterruptedException 
+     */
+    public static void main(String[] args) throws InterruptedException {
+        executeSingleTask();
+        executeBatchTask();
+    }
+
+    /**
+     * 执行单个异步任务：<br>
+     * 1、用submit方法向线程池提交一个任务。<br>
+     * 2、获取结果时，指定了超时时间。<br><br>
+     * 结果：超时后，调用者收到TimeoutException，但实际上任务还在继续执行。
+     * @throws InterruptedException
+     */
+    private static void executeSingleTask() throws InterruptedException {
+        ExecutorService threadpool = Executors.newFixedThreadPool(6);
+        try {
+            Future<Integer> f = threadpool.submit(createCallable(5 * 1000));
+            Object result = f.get(3, TimeUnit.SECONDS);
+            System.out.println("单个任务的执行结果："+result);
+        } catch (Exception e) {
+            _logger.error("线程执行任务时出错", e);
+        } finally {
+            threadpool.shutdown();
+            threadpool.awaitTermination(10, TimeUnit.SECONDS);
+        }
+    }
+
+    /**
+     * 执行多个异步任务：<br>
+     * 1、用invokeAll方法向线程池提交多个任务，并指定了执行的超时时间。<br><br>
+     * 结果：超时后，未执行完成的任务被取消，在调用Future的get方法时，取消的任务会抛出CancellationException，执行完成的任务可获得结果。
+     * @throws InterruptedException
+     */
+    private static void executeBatchTask() throws InterruptedException {
+        ExecutorService threadpool = Executors.newFixedThreadPool(6);
+        List<Callable<Integer>> tasks = new ArrayList<Callable<Integer>>();
+        tasks.add(createCallable(2000));
+        tasks.add(createCallable(5000));
+        tasks.add(createCallable(2500));
+        
+        long startTime = System.currentTimeMillis();
+        try {
+            List<Future<Integer>> fs = threadpool.invokeAll(tasks, 3, TimeUnit.SECONDS);
+            int result = 0;
+            for (Future<Integer> f : fs) {
+                try{
+                    result += f.get();
+                } catch(CancellationException ce) {
+                    // nothing
+                }
+            }
+            System.out.println("执行三个任务共耗时：" + (System.currentTimeMillis() - startTime) + "毫秒");
+            System.out.println("三个任务的执行结果汇总："+result);
+        } catch (Exception e) {
+            _logger.error("线程执行任务时出错", e);
+        } finally {
+            threadpool.shutdown();
+            threadpool.awaitTermination(10, TimeUnit.SECONDS);
+        }
+    }
+    
+    /**
+     * 创建需要长时间执行的任务模拟对象。
+     * @param sleepTimes 线程休眠时间（单位：毫秒）
+     * @return {@link Callable}对象
+     */
+    private static Callable<Integer> createCallable(final int sleepTimes) {
+        Callable<Integer> c = new Callable<Integer>() {
+
+            @Override
+            public Integer call() throws Exception {
+                Thread.sleep(sleepTimes);
+                System.out.println(Thread.currentThread().getName() + ": I'm working");
+                return 9;
+            }
+        };
+        
+        return c;
+    }
+
+}

Java/JavaDemo/codedemo/java/util/map/Map接口及其实现类.ucls

@@ -0,0 +1,139 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<class-diagram version="1.1.6" icons="true" always-add-relationships="false" generalizations="true" realizations="true" 
+  associations="true" dependencies="false" nesting-relationships="true">  
+  <interface id="1" language="java" name="java.util.Map" project="JavaDemo" 
+    file="/devdata/java/jdk/jdk1.6.0_45/jre/lib/rt.jar" binary="true" corner="BOTTOM_RIGHT">    
+    <position height="-1" width="-1" x="417" y="179"/>    
+    <display autosize="true" stereotype="true" package="true" initial-value="false" signature="true" accessors="true" 
+      visibility="true">      
+      <attributes public="false" package="false" protected="false" private="false" static="true"/>      
+      <operations public="true" package="true" protected="false" private="false" static="true"/>    
+    </display>  
+  </interface>  
+  <class id="2" language="java" name="java.util.AbstractMap" project="JavaDemo" 
+    file="/devdata/java/jdk/jdk1.6.0_45/jre/lib/rt.jar" binary="true" corner="BOTTOM_RIGHT">    
+    <position height="-1" width="-1" x="417" y="423"/>    
+    <display autosize="true" stereotype="true" package="true" initial-value="false" signature="true" accessors="true" 
+      visibility="true">      
+      <attributes public="false" package="false" protected="false" private="false" static="true"/>      
+      <operations public="false" package="false" protected="false" private="false" static="true"/>    
+    </display>  
+  </class>  
+  <class id="3" language="java" name="java.util.HashMap" project="JavaDemo" 
+    file="/devdata/java/jdk/jdk1.6.0_45/jre/lib/rt.jar" binary="true" corner="BOTTOM_RIGHT">    
+    <position height="-1" width="-1" x="824" y="422"/>    
+    <display autosize="true" stereotype="true" package="true" initial-value="false" signature="true" accessors="true" 
+      visibility="true">      
+      <attributes public="false" package="false" protected="false" private="false" static="false"/>      
+      <operations public="false" package="false" protected="false" private="false" static="true"/>    
+    </display>  
+  </class>  
+  <class id="4" language="java" name="java.util.Hashtable" project="JavaDemo" 
+    file="/devdata/java/jdk/jdk1.6.0_45/jre/lib/rt.jar" binary="true" corner="BOTTOM_RIGHT">    
+    <position height="-1" width="-1" x="152" y="312"/>    
+    <display autosize="true" stereotype="true" package="true" initial-value="false" signature="true" accessors="true" 
+      visibility="true">      
+      <attributes public="false" package="false" protected="false" private="false" static="true"/>      
+      <operations public="false" package="false" protected="false" private="false" static="true"/>    
+    </display>  
+  </class>  
+  <class id="5" language="java" name="java.util.IdentityHashMap" project="JavaDemo" 
+    file="/devdata/java/jdk/jdk1.6.0_45/jre/lib/rt.jar" binary="true" corner="BOTTOM_RIGHT">    
+    <position height="-1" width="-1" x="206" y="423"/>    
+    <display autosize="true" stereotype="true" package="true" initial-value="false" signature="true" accessors="true" 
+      visibility="true">      
+      <attributes public="false" package="false" protected="false" private="false" static="true"/>      
+      <operations public="false" package="false" protected="false" private="false" static="true"/>    
+    </display>  
+  </class>  
+  <class id="6" language="java" name="java.util.LinkedHashMap" project="JavaDemo" 
+    file="/devdata/java/jdk/jdk1.6.0_45/jre/lib/rt.jar" binary="true" corner="BOTTOM_RIGHT">    
+    <position height="-1" width="-1" x="824" y="283"/>    
+    <display autosize="true" stereotype="true" package="true" initial-value="false" signature="true" accessors="true" 
+      visibility="true">      
+      <attributes public="false" package="false" protected="false" private="false" static="true"/>      
+      <operations public="false" package="false" protected="false" private="false" static="true"/>    
+    </display>  
+  </class>  
+  <class id="7" language="java" name="java.util.EnumMap" project="JavaDemo" 
+    file="/devdata/java/jdk/jdk1.6.0_45/jre/lib/rt.jar" binary="true" corner="BOTTOM_RIGHT">    
+    <position height="-1" width="-1" x="329" y="528"/>    
+    <display autosize="true" stereotype="true" package="true" initial-value="false" signature="true" accessors="true" 
+      visibility="true">      
+      <attributes public="false" package="false" protected="false" private="false" static="true"/>      
+      <operations public="false" package="false" protected="false" private="false" static="true"/>    
+    </display>  
+  </class>  
+  <class id="8" language="java" name="java.util.TreeMap" project="JavaDemo" 
+    file="/devdata/java/jdk/jdk1.6.0_45/jre/lib/rt.jar" binary="true" corner="BOTTOM_RIGHT">    
+    <position height="-1" width="-1" x="499" y="526"/>    
+    <display autosize="true" stereotype="true" package="true" initial-value="false" signature="true" accessors="true" 
+      visibility="true">      
+      <attributes public="false" package="false" protected="false" private="false" static="true"/>      
+      <operations public="false" package="false" protected="false" private="false" static="true"/>    
+    </display>  
+  </class>  
+  <class id="9" language="java" name="java.util.WeakHashMap" project="JavaDemo" 
+    file="/devdata/java/jdk/jdk1.6.0_45/jre/lib/rt.jar" binary="true" corner="BOTTOM_RIGHT">    
+    <position height="-1" width="-1" x="609" y="374"/>    
+    <display autosize="true" stereotype="true" package="true" initial-value="false" signature="true" accessors="true" 
+      visibility="true">      
+      <attributes public="false" package="false" protected="false" private="false" static="true"/>      
+      <operations public="false" package="false" protected="false" private="false" static="true"/>    
+    </display>  
+  </class>  
+  <generalization id="10">    
+    <end type="SOURCE" refId="9"/>    
+    <end type="TARGET" refId="2"/>  
+  </generalization>  
+  <generalization id="11">    
+    <end type="SOURCE" refId="8"/>    
+    <end type="TARGET" refId="2"/>  
+  </generalization>  
+  <realization id="12">    
+    <end type="SOURCE" refId="5"/>    
+    <end type="TARGET" refId="1"/>  
+  </realization>  
+  <generalization id="13">    
+    <end type="SOURCE" refId="3"/>    
+    <end type="TARGET" refId="2"/>  
+  </generalization>  
+  <realization id="14">    
+    <end type="SOURCE" refId="4"/>    
+    <end type="TARGET" refId="1"/>  
+  </realization>  
+  <realization id="15">    
+    <end type="SOURCE" refId="2"/>    
+    <end type="TARGET" refId="1"/>  
+  </realization>  
+  <realization id="16">    
+    <end type="SOURCE" refId="3"/>    
+    <end type="TARGET" refId="1"/>  
+  </realization>  
+  <generalization id="17">    
+    <end type="SOURCE" refId="7"/>    
+    <end type="TARGET" refId="2"/>  
+  </generalization>  
+  <realization id="18">    
+    <end type="SOURCE" refId="9"/>    
+    <end type="TARGET" refId="1"/>  
+  </realization>  
+  <generalization id="19">    
+    <end type="SOURCE" refId="6"/>    
+    <end type="TARGET" refId="3"/>  
+  </generalization>  
+  <generalization id="20">    
+    <end type="SOURCE" refId="5"/>    
+    <end type="TARGET" refId="2"/>  
+  </generalization>  
+  <realization id="21">    
+    <end type="SOURCE" refId="6"/>    
+    <end type="TARGET" refId="1"/>  
+  </realization>  
+  <classifier-display autosize="true" stereotype="true" package="true" initial-value="false" signature="true" 
+    accessors="true" visibility="true">    
+    <attributes public="true" package="true" protected="false" private="false" static="true"/>    
+    <operations public="true" package="true" protected="false" private="false" static="true"/>  
+  </classifier-display>  
+  <association-display labels="true" multiplicity="true"/>
+</class-diagram>

Java/JavaDemo/codedemo/java/util/timer/TimerDemo.java

@@ -0,0 +1,47 @@
+package cn.aofeng.demo.java.util.timer;
+
+import java.util.Timer;
+import java.util.TimerTask;
+
+import cn.aofeng.demo.util.DateUtil;
+
+/**
+ * {@link Timer}的使用示例：<br>
+ * 定时任务1：执行过程中会抛出异常。<br>
+ * 定时任务2：执行过程中不会抛出异常。<br>
+ * <br>
+ * 目的：检测java.util.Timer在执行定时任务的过程中，任务内抛出异常没有捕捉时在下一次执行时间到来时，是否可以正常执行。<br>
+ * 测试的JDK版本：1.6.xx。<br>
+ * 结果：不通过，定时任务抛出异常时，整个Timer中止，其他定时任务也中止。
+ * 
+ * @author <a href="mailto:aofengblog@163.com">聂勇</a>
+ */
+public class TimerDemo {
+
+    public static void main(String[] args) {
+        Timer timer = new Timer("aofeng-timer-demo");
+        timer.schedule(new ThrowExceptionTask(), DateUtil.getNextMinute(), 60*1000);
+        timer.schedule(new NotThrowExceptionTask(), DateUtil.getNextMinute(), 60*1000);
+    }
+
+    static class ThrowExceptionTask extends TimerTask {
+
+        @Override
+        public void run() {
+            System.out.println("任务名:ThrowExceptionTask, 当前时间:"+DateUtil.getCurrentTime());
+            
+            throw new IllegalArgumentException();
+        }
+        
+    } // end of ThrowExceptionTask
+    
+    static class NotThrowExceptionTask extends TimerTask {
+        
+        @Override
+        public void run() {
+            System.out.println("任务名:NotThrowExceptionTask, 当前时间:"+DateUtil.getCurrentTime());
+        }
+        
+    } // end of NotThrowExceptionTask
+
+}