Created
November 1, 2015 14:20
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MultiThreadPractice created by Intellij.
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<?xml version="1.0" encoding="UTF-8"?> | |
<project version="4"> | |
<component name="CompilerConfiguration"> | |
<resourceExtensions /> | |
<wildcardResourcePatterns> | |
<entry name="!?*.java" /> | |
<entry name="!?*.form" /> | |
<entry name="!?*.class" /> | |
<entry name="!?*.groovy" /> | |
<entry name="!?*.scala" /> | |
<entry name="!?*.flex" /> | |
<entry name="!?*.kt" /> | |
<entry name="!?*.clj" /> | |
<entry name="!?*.aj" /> | |
</wildcardResourcePatterns> | |
<annotationProcessing> | |
<profile default="true" name="Default" enabled="false"> | |
<processorPath useClasspath="true" /> | |
</profile> | |
</annotationProcessing> | |
</component> | |
</project> |
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<component name="CopyrightManager"> | |
<settings default="" /> | |
</component> |
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<html>Simple <b>Java</b> application that includes a class with <code>main()</code> method</html> |
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<?xml version="1.0" encoding="UTF-8"?> | |
<project version="4"> | |
<component name="ClientPropertiesManager"> | |
<properties class="javax.swing.AbstractButton"> | |
<property name="hideActionText" class="java.lang.Boolean" /> | |
</properties> | |
<properties class="javax.swing.JComponent"> | |
<property name="html.disable" class="java.lang.Boolean" /> | |
</properties> | |
<properties class="javax.swing.JEditorPane"> | |
<property name="JEditorPane.w3cLengthUnits" class="java.lang.Boolean" /> | |
<property name="JEditorPane.honorDisplayProperties" class="java.lang.Boolean" /> | |
<property name="charset" class="java.lang.String" /> | |
</properties> | |
<properties class="javax.swing.JList"> | |
<property name="List.isFileList" class="java.lang.Boolean" /> | |
</properties> | |
<properties class="javax.swing.JPasswordField"> | |
<property name="JPasswordField.cutCopyAllowed" class="java.lang.Boolean" /> | |
</properties> | |
<properties class="javax.swing.JSlider"> | |
<property name="Slider.paintThumbArrowShape" class="java.lang.Boolean" /> | |
<property name="JSlider.isFilled" class="java.lang.Boolean" /> | |
</properties> | |
<properties class="javax.swing.JTable"> | |
<property name="Table.isFileList" class="java.lang.Boolean" /> | |
<property name="JTable.autoStartsEdit" class="java.lang.Boolean" /> | |
<property name="terminateEditOnFocusLost" class="java.lang.Boolean" /> | |
</properties> | |
<properties class="javax.swing.JToolBar"> | |
<property name="JToolBar.isRollover" class="java.lang.Boolean" /> | |
</properties> | |
<properties class="javax.swing.JTree"> | |
<property name="JTree.lineStyle" class="java.lang.String" /> | |
</properties> | |
<properties class="javax.swing.text.JTextComponent"> | |
<property name="caretAspectRatio" class="java.lang.Double" /> | |
<property name="caretWidth" class="java.lang.Integer" /> | |
</properties> | |
</component> | |
<component name="EntryPointsManager"> | |
<entry_points version="2.0" /> | |
</component> | |
<component name="ProjectKey"> | |
<option name="state" value="project://e2804f05-5315-4fc6-a121-c522a6c26470" /> | |
</component> | |
<component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" assert-keyword="true" jdk-15="true" project-jdk-name="1.8" project-jdk-type="JavaSDK"> | |
<output url="file://$PROJECT_DIR$/out" /> | |
</component> | |
</project> |
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<?xml version="1.0" encoding="UTF-8"?> | |
<project version="4"> | |
<component name="ProjectModuleManager"> | |
<modules> | |
<module fileurl="file://$PROJECT_DIR$/MultiThreadPractice.iml" filepath="$PROJECT_DIR$/MultiThreadPractice.iml" /> | |
</modules> | |
</component> | |
</project> |
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<template> | |
<input-field default="com.company">IJ_BASE_PACKAGE</input-field> | |
</template> |
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<?xml version="1.0" encoding="UTF-8"?> | |
<project version="4"> | |
<component name="Palette2"> | |
<group name="Swing"> | |
<item class="com.intellij.uiDesigner.HSpacer" tooltip-text="Horizontal Spacer" icon="/com/intellij/uiDesigner/icons/hspacer.png" removable="false" auto-create-binding="false" can-attach-label="false"> | |
<default-constraints vsize-policy="1" hsize-policy="6" anchor="0" fill="1" /> | |
</item> | |
<item class="com.intellij.uiDesigner.VSpacer" tooltip-text="Vertical Spacer" icon="/com/intellij/uiDesigner/icons/vspacer.png" removable="false" auto-create-binding="false" can-attach-label="false"> | |
<default-constraints vsize-policy="6" hsize-policy="1" anchor="0" fill="2" /> | |
</item> | |
<item class="javax.swing.JPanel" icon="/com/intellij/uiDesigner/icons/panel.png" removable="false" auto-create-binding="false" can-attach-label="false"> | |
<default-constraints vsize-policy="3" hsize-policy="3" anchor="0" fill="3" /> | |
</item> | |
<item class="javax.swing.JScrollPane" icon="/com/intellij/uiDesigner/icons/scrollPane.png" removable="false" auto-create-binding="false" can-attach-label="true"> | |
<default-constraints vsize-policy="7" hsize-policy="7" anchor="0" fill="3" /> | |
</item> | |
<item class="javax.swing.JButton" icon="/com/intellij/uiDesigner/icons/button.png" removable="false" auto-create-binding="true" can-attach-label="false"> | |
<default-constraints vsize-policy="0" hsize-policy="3" anchor="0" fill="1" /> | |
<initial-values> | |
<property name="text" value="Button" /> | |
</initial-values> | |
</item> | |
<item class="javax.swing.JRadioButton" icon="/com/intellij/uiDesigner/icons/radioButton.png" removable="false" auto-create-binding="true" can-attach-label="false"> | |
<default-constraints vsize-policy="0" hsize-policy="3" anchor="8" fill="0" /> | |
<initial-values> | |
<property name="text" value="RadioButton" /> | |
</initial-values> | |
</item> | |
<item class="javax.swing.JCheckBox" icon="/com/intellij/uiDesigner/icons/checkBox.png" removable="false" auto-create-binding="true" can-attach-label="false"> | |
<default-constraints vsize-policy="0" hsize-policy="3" anchor="8" fill="0" /> | |
<initial-values> | |
<property name="text" value="CheckBox" /> | |
</initial-values> | |
</item> | |
<item class="javax.swing.JLabel" icon="/com/intellij/uiDesigner/icons/label.png" removable="false" auto-create-binding="false" can-attach-label="false"> | |
<default-constraints vsize-policy="0" hsize-policy="0" anchor="8" fill="0" /> | |
<initial-values> | |
<property name="text" value="Label" /> | |
</initial-values> | |
</item> | |
<item class="javax.swing.JTextField" icon="/com/intellij/uiDesigner/icons/textField.png" removable="false" auto-create-binding="true" can-attach-label="true"> | |
<default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1"> | |
<preferred-size width="150" height="-1" /> | |
</default-constraints> | |
</item> | |
<item class="javax.swing.JPasswordField" icon="/com/intellij/uiDesigner/icons/passwordField.png" removable="false" auto-create-binding="true" can-attach-label="true"> | |
<default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1"> | |
<preferred-size width="150" height="-1" /> | |
</default-constraints> | |
</item> | |
<item class="javax.swing.JFormattedTextField" icon="/com/intellij/uiDesigner/icons/formattedTextField.png" removable="false" auto-create-binding="true" can-attach-label="true"> | |
<default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1"> | |
<preferred-size width="150" height="-1" /> | |
</default-constraints> | |
</item> | |
<item class="javax.swing.JTextArea" icon="/com/intellij/uiDesigner/icons/textArea.png" removable="false" auto-create-binding="true" can-attach-label="true"> | |
<default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3"> | |
<preferred-size width="150" height="50" /> | |
</default-constraints> | |
</item> | |
<item class="javax.swing.JTextPane" icon="/com/intellij/uiDesigner/icons/textPane.png" removable="false" auto-create-binding="true" can-attach-label="true"> | |
<default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3"> | |
<preferred-size width="150" height="50" /> | |
</default-constraints> | |
</item> | |
<item class="javax.swing.JEditorPane" icon="/com/intellij/uiDesigner/icons/editorPane.png" removable="false" auto-create-binding="true" can-attach-label="true"> | |
<default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3"> | |
<preferred-size width="150" height="50" /> | |
</default-constraints> | |
</item> | |
<item class="javax.swing.JComboBox" icon="/com/intellij/uiDesigner/icons/comboBox.png" removable="false" auto-create-binding="true" can-attach-label="true"> | |
<default-constraints vsize-policy="0" hsize-policy="2" anchor="8" fill="1" /> | |
</item> | |
<item class="javax.swing.JTable" icon="/com/intellij/uiDesigner/icons/table.png" removable="false" auto-create-binding="true" can-attach-label="false"> | |
<default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3"> | |
<preferred-size width="150" height="50" /> | |
</default-constraints> | |
</item> | |
<item class="javax.swing.JList" icon="/com/intellij/uiDesigner/icons/list.png" removable="false" auto-create-binding="true" can-attach-label="false"> | |
<default-constraints vsize-policy="6" hsize-policy="2" anchor="0" fill="3"> | |
<preferred-size width="150" height="50" /> | |
</default-constraints> | |
</item> | |
<item class="javax.swing.JTree" icon="/com/intellij/uiDesigner/icons/tree.png" removable="false" auto-create-binding="true" can-attach-label="false"> | |
<default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3"> | |
<preferred-size width="150" height="50" /> | |
</default-constraints> | |
</item> | |
<item class="javax.swing.JTabbedPane" icon="/com/intellij/uiDesigner/icons/tabbedPane.png" removable="false" auto-create-binding="true" can-attach-label="false"> | |
<default-constraints vsize-policy="3" hsize-policy="3" anchor="0" fill="3"> | |
<preferred-size width="200" height="200" /> | |
</default-constraints> | |
</item> | |
<item class="javax.swing.JSplitPane" icon="/com/intellij/uiDesigner/icons/splitPane.png" removable="false" auto-create-binding="false" can-attach-label="false"> | |
<default-constraints vsize-policy="3" hsize-policy="3" anchor="0" fill="3"> | |
<preferred-size width="200" height="200" /> | |
</default-constraints> | |
</item> | |
<item class="javax.swing.JSpinner" icon="/com/intellij/uiDesigner/icons/spinner.png" removable="false" auto-create-binding="true" can-attach-label="true"> | |
<default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1" /> | |
</item> | |
<item class="javax.swing.JSlider" icon="/com/intellij/uiDesigner/icons/slider.png" removable="false" auto-create-binding="true" can-attach-label="false"> | |
<default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1" /> | |
</item> | |
<item class="javax.swing.JSeparator" icon="/com/intellij/uiDesigner/icons/separator.png" removable="false" auto-create-binding="false" can-attach-label="false"> | |
<default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3" /> | |
</item> | |
<item class="javax.swing.JProgressBar" icon="/com/intellij/uiDesigner/icons/progressbar.png" removable="false" auto-create-binding="true" can-attach-label="false"> | |
<default-constraints vsize-policy="0" hsize-policy="6" anchor="0" fill="1" /> | |
</item> | |
<item class="javax.swing.JToolBar" icon="/com/intellij/uiDesigner/icons/toolbar.png" removable="false" auto-create-binding="false" can-attach-label="false"> | |
<default-constraints vsize-policy="0" hsize-policy="6" anchor="0" fill="1"> | |
<preferred-size width="-1" height="20" /> | |
</default-constraints> | |
</item> | |
<item class="javax.swing.JToolBar$Separator" icon="/com/intellij/uiDesigner/icons/toolbarSeparator.png" removable="false" auto-create-binding="false" can-attach-label="false"> | |
<default-constraints vsize-policy="0" hsize-policy="0" anchor="0" fill="1" /> | |
</item> | |
<item class="javax.swing.JScrollBar" icon="/com/intellij/uiDesigner/icons/scrollbar.png" removable="false" auto-create-binding="true" can-attach-label="false"> | |
<default-constraints vsize-policy="6" hsize-policy="0" anchor="0" fill="2" /> | |
</item> | |
</group> | |
</component> | |
</project> |
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<?xml version="1.0" encoding="UTF-8"?> | |
<project version="4"> | |
<component name="VcsDirectoryMappings"> | |
<mapping directory="" vcs="" /> | |
</component> | |
</project> |
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<?xml version="1.0" encoding="UTF-8"?> | |
<module type="JAVA_MODULE" version="4"> | |
<component name="NewModuleRootManager" inherit-compiler-output="true"> | |
<exclude-output /> | |
<content url="file://$MODULE_DIR$"> | |
<sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" /> | |
</content> | |
<orderEntry type="inheritedJdk" /> | |
<orderEntry type="sourceFolder" forTests="false" /> | |
</component> | |
</module> | |
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package com.panda; | |
import java.util.Queue; | |
import java.util.concurrent.ConcurrentLinkedQueue; | |
import java.util.concurrent.ExecutionException; | |
import javafx.concurrent.Task; | |
public class BaseJob<T> { | |
private String jobId; | |
public String getJobId() { | |
return jobId; | |
} | |
public void setJobId(String jobId) { | |
this.jobId = jobId; | |
} | |
private Queue<Task<T>> tasks = new ConcurrentLinkedQueue<Task<T>>(); | |
public void pushTask(Task<T> task) { | |
this.tasks.add(task); | |
} | |
public Task<T> popTask() { | |
return tasks.poll(); | |
} | |
public void run() throws ExecutionException, InterruptedException { | |
for(Task<T> task : this.tasks){ | |
task.run(); | |
T result = task.get(); | |
System.out.println("result = " + result); | |
} | |
} | |
} |
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package com.panda; | |
import java.util.concurrent.ExecutionException; | |
import java.util.concurrent.ExecutorService; | |
import java.util.concurrent.Executors; | |
import java.util.concurrent.Future; | |
import java.util.concurrent.TimeUnit; | |
import java.util.concurrent.TimeoutException; | |
public class Job { | |
static ExecutorService executor = Executors.newFixedThreadPool(2); | |
private Integer doSomething() { | |
return 123; | |
} | |
public static void main(String[] args) { | |
Job job = new Job(); | |
// A task thread return an integer value which executes within 4 | |
// seconds. | |
Future<Integer> future = executor.submit(() -> { | |
try { | |
TimeUnit.SECONDS.sleep(4); | |
return job.doSomething(); | |
} catch (InterruptedException e) { | |
throw new IllegalStateException("task interrupted", e); | |
} | |
}); | |
// Another thread for checking the cancel notification. | |
executor.submit(() -> { | |
checkCancelNotification(); | |
}); | |
// Try to get the within 10 seconds timeout constraint. | |
try { | |
future.get(10, TimeUnit.SECONDS); | |
} catch (InterruptedException | ExecutionException | TimeoutException e) { | |
// TODO Auto-generated catch block | |
e.printStackTrace(); | |
} | |
} | |
// cancel request check | |
private static void checkCancelNotification() { | |
try { | |
for (int i = 0; i < 3; i++) { | |
TimeUnit.SECONDS.sleep(1); | |
System.out.println(String.format("Checking the cancel notfication in %1$d second.", i + 1)); | |
} | |
// simulate the scenario that there is a cancel request | |
cancelJob(); | |
} catch (InterruptedException e) { | |
e.printStackTrace(); | |
} | |
} | |
private static void cancelJob() { | |
try { | |
System.out.println("attempt to shutdown executor"); | |
executor.shutdown(); | |
boolean r = executor.awaitTermination(5, TimeUnit.SECONDS); | |
if (r) | |
System.out.println("Really shutdown."); | |
else | |
System.out.println("Really not shutdown."); | |
} catch (InterruptedException e) { | |
System.err.println("tasks interrupted"); | |
} finally { | |
if (!executor.isTerminated()) { | |
System.err.println("cancel non-finished tasks"); | |
} | |
executor.shutdownNow(); | |
System.out.println("shutdown finished"); | |
} | |
} | |
} |
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package com.panda; | |
import java.util.concurrent.ExecutionException; | |
public class JobManager { | |
private static JobManager instance = null; | |
private static Object mutex = new Object(); | |
private JobManager() { | |
} | |
public static JobManager getInstance() { | |
if (instance == null) { | |
synchronized (mutex) { | |
if (instance == null) instance = new JobManager(); | |
} | |
} | |
return instance; | |
} | |
public void runJob(BaseJob job) throws ExecutionException, InterruptedException { | |
job.run(); | |
} | |
} |
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package com.panda; | |
import javafx.concurrent.Task; | |
import java.util.concurrent.ExecutionException; | |
public class Main { | |
public static void main(String[] args) { | |
JobManager jobManager = JobManager.getInstance(); | |
BaseJob job = new BaseJob(); | |
Task task1 = new Task() { | |
private static final String TASK_NAME = "Task1"; | |
@Override | |
protected Object call() throws Exception { | |
return TASK_NAME; | |
} | |
@Override | |
public boolean cancel(boolean mayInterruptIfRunning) { | |
System.out.println("Call cancel from " + TASK_NAME); | |
return super.cancel(mayInterruptIfRunning); | |
} | |
}; | |
Task task2 = new Task() { | |
private static final String TASK_NAME = "Task2"; | |
@Override | |
protected Object call() throws Exception { | |
return TASK_NAME; | |
} | |
@Override | |
public boolean cancel(boolean mayInterruptIfRunning) { | |
System.out.println("Call cancel from " + TASK_NAME); | |
return super.cancel(mayInterruptIfRunning); | |
} | |
}; | |
job.pushTask(task1); | |
job.pushTask(task2); | |
try { | |
jobManager.runJob(job); | |
} catch (ExecutionException | InterruptedException ex) { | |
System.out.println("ex.printStackTrace(); = " + ex.getMessage()); | |
} | |
} | |
} |
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