Example usage for java.util ArrayList ArrayList

Introduction

In this page you can find the example usage for java.util ArrayList ArrayList.

Prototype

public ArrayList(Collection<? extends E> c) 

Source Link

Document

Constructs a list containing the elements of the specified collection, in the order they are returned by the collection's iterator.

Usage

From source file:Main.java

public static void main(String[] args) throws Exception {
    JAXBContext jc = JAXBContext.newInstance(Content.class);

    List<String> strings = new ArrayList<String>(2);
    strings.add("foo");
    strings.add("bar");

    Content content = new Content();
    content.setKeywords(strings);//  w w w.j a  v a 2  s  . c o m

    Marshaller marshaller = jc.createMarshaller();
    marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
    marshaller.marshal(content, System.out);
}

---

From source file:Main.java

public static void main(String args[]) {
    JFrame frame = new JFrame("ArrayListComboBoxModel");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    Collection<Object> col = System.getProperties().values();
    ArrayList<Object> arrayList = new ArrayList<Object>(col);
    ArrayListComboBoxModel model = new ArrayListComboBoxModel(arrayList);

    JComboBox comboBox = new JComboBox(model);

    frame.add(comboBox, BorderLayout.NORTH);
    frame.setSize(300, 225);/*from w  ww  .ja v  a 2  s. c o  m*/
    frame.setVisible(true);
}

---

From source file:MainClass.java

public static void main(String[] args) {
    ArrayList myList = new ArrayList(5);
    for (int i = 0; i < 5; i++) {
        myList.add(new Integer(i));
    }/*  w  w  w  .  j a  va 2s  . c o  m*/
    System.out.println("List contains " + myList.size() + " elements");

    Integer int2 = new Integer(2);
    System.out.println("List contains Integer(2): " + myList.contains(int2));
    System.out.println("Integer(2) is at index " + myList.indexOf(int2));

    myList.set(2, new Integer(99));
    System.out.println("Get element at index 2: " + myList.get(2));

    myList.ensureCapacity(15);
    for (int i = 10; i < 15; i++) {
        myList.add(new Integer(i));
    }

    myList.subList(10, 15).clear();
    myList.trimToSize();

    System.out.println(myList);
}

---

From source file:Main.java

public static void main(String[] a) {
    Map<String, String> yourMap = new HashMap<String, String>();
    yourMap.put("1", "one");
    yourMap.put("2", "two");
    yourMap.put("3", "three");

    Map<String, Object> map = new LinkedHashMap<String, Object>();

    List<String> keyList = new ArrayList<String>(yourMap.keySet());
    List<String> valueList = new ArrayList<String>(yourMap.values());
    Set<String> sortedSet = new TreeSet<String>(valueList);

    Object[] sortedArray = sortedSet.toArray();
    int size = sortedArray.length;

    for (int i = 0; i < size; i++) {
        map.put(keyList.get(valueList.indexOf(sortedArray[i])), sortedArray[i]);
    }/*from   w w  w.  ja v a2 s. c o m*/

    Set ref = map.keySet();
    Iterator it = ref.iterator();

    while (it.hasNext()) {
        String i = (String) it.next();
        System.out.println(i);
    }
}

---

From source file:Main.java

public static void main(String[] args) throws InterruptedException, ExecutionException {
    List<String> searchList = new ArrayList<String>(7);
    searchList.add("hello");
    searchList.add("world");
    searchList.add("CSS");
    searchList.add("debian");
    searchList.add("linux");
    searchList.add("HTML");
    searchList.add("stack");

    Set<String> targetSet = new HashSet<String>(searchList);
    Set<String> matchSet = findMatches(searchList, targetSet);
    for (String match : matchSet) {
        System.out.println("match:  " + match);
    }/*from   w w w .j a  v  a 2  s.  c  o m*/
}

---

From source file:Main.java

public static void main(final String[] args) throws Exception {
    Random RND = new Random();
    ExecutorService es = Executors.newFixedThreadPool(Runtime.getRuntime().availableProcessors());
    List<Future<String>> results = new ArrayList<>(10);
    for (int i = 0; i < 10; i++) {
        results.add(es.submit(new TimeSliceTask(RND.nextInt(10), TimeUnit.SECONDS)));
    }//from  w  ww. j a va 2 s . co  m
    es.shutdown();
    while (!results.isEmpty()) {
        Iterator<Future<String>> i = results.iterator();
        while (i.hasNext()) {
            Future<String> f = i.next();
            if (f.isDone()) {
                System.out.println(f.get());
                i.remove();
            }
        }
    }
}

---

From source file:Main.java

public static void main(String[] args) {
    Map<String, Student> map = new HashMap<>();
    map.put("s1", new Student(5, "A"));
    map.put("s2", new Student(4, "B"));
    map.put("s3", new Student(10, "C"));
    map.put("s4", new Student(2, "D"));
    Collection<Student> students = map.values();
    List<Student> list = new ArrayList<>(students);
    Collections.sort(list, new MyComparator());

    for (Iterator<Student> it = list.iterator(); it.hasNext();) {
        Student stdn = (Student) it.next();
        System.out.println("Student id : " + stdn.id);
        System.out.println("Student Name : " + stdn.name);
    }//w  w w  .j  av  a 2  s  .com
}

---

From source file:Main.java

public static void main(String[] args) {
    List<Person> roster = createRoster();

    System.out.println("Members by gender:");
    Map<Person.Sex, List<Person>> byGender = roster.stream().collect(Collectors.groupingBy(Person::getGender));

    List<Map.Entry<Person.Sex, List<Person>>> byGenderList = new ArrayList<>(byGender.entrySet());

    byGenderList.stream().forEach(e -> {
        System.out.println("Gender: " + e.getKey());
        e.getValue().stream().map(Person::getName).forEach(f -> System.out.println(f));
    });// www. j  a  v  a 2s . c  o  m

}

---

From source file:Main.java

public static void main(String[] args) {
    List<Person> roster = createRoster();
    ConcurrentMap<Person.Sex, List<Person>> byGenderParallel = roster.parallelStream()
            .collect(Collectors.groupingByConcurrent(Person::getGender));

    List<Map.Entry<Person.Sex, List<Person>>> byGenderList = new ArrayList<>(byGenderParallel.entrySet());

    System.out.println("Group members by gender:");
    byGenderList.stream().forEach(e -> {
        System.out.println("Gender: " + e.getKey());
        e.getValue().stream().map(Person::getName).forEach(f -> System.out.println(f));
    });//from w w w .  j  av a2 s . c o m

}

---

From source file:Main.java

public static void main(String[] argv) throws Exception {
    DefaultTableModel model = new DefaultTableModel();
    JTable table = new JTable(model);
    model.addColumn("Col1");
    model.addRow(new Object[] { "r1" });
    model.addRow(new Object[] { "r2" });
    model.addRow(new Object[] { "r3" });

    Vector data = model.getDataVector();
    Vector row = (Vector) data.elementAt(1);

    int mColIndex = 0;
    List colData = new ArrayList(table.getRowCount());
    for (int i = 0; i < table.getRowCount(); i++) {
        row = (Vector) data.elementAt(i);
        colData.add(row.get(mColIndex));
    }/* www.jav  a2s. c  o  m*/

    // Append a new column with copied data
    model.addColumn("Col3", colData.toArray());

    JFrame f = new JFrame();
    f.setSize(300, 300);
    f.add(new JScrollPane(table));
    f.setVisible(true);
}

---

• «
• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• »