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()

Source Link

Document

Constructs an empty list with an initial capacity of ten.

Usage

From source file:Main.java

public static void main(String[] args) {
    // Create a list of strings
    List<String> names = new ArrayList<>();
    names.add("A");
    names.add("B");
    names.add("C");

    Iterator<String> nameIterator = names.iterator();
    nameIterator.forEachRemaining(System.out::println);
}

From source file:Main.java

public static void main(String args[]) {
    List<Integer> dataList = new ArrayList<Integer>();
    for (int i = 0; i < 10; i++) {
        dataList.add(i);/*from w  w  w  .ja v  a  2  s  .  c o m*/
    }
    Collections.shuffle(dataList);
    int[] num = new int[dataList.size()];
    for (int i = 0; i < dataList.size(); i++) {
        num[i] = dataList.get(i);
    }
    System.out.println(Arrays.toString(num));
}

From source file:Main.java

public static void main(String[] args) {

    // create a new list of arguments for our process
    List<String> list = new ArrayList<String>();
    list.add("notepad.exe");

    // create the process builder
    ProcessBuilder pb = new ProcessBuilder(list);

    // get the command list
    System.out.println(pb.command());

}

From source file:Main.java

public static void main(String[] args) {
    ArrayList<String> list = new ArrayList<String>();

    list.add("Monday");
    list.add("Tuesdag");
    list.add("Wednesday");
    list.add("Thursday");
    list.add("Friday");
    list.add("Saturday");
    list.add("Sunday");

    Iterator<String> iterator = null;

    iterator = list.iterator();//from w  w w . j  a v a 2  s. c o m
    while (iterator.hasNext()) {
        String element = iterator.next();
        System.out.println(element);
    }

    for (iterator = list.iterator(); iterator.hasNext();) {
        String element = iterator.next();
        System.out.println(element);
    }

    for (String element : list) {
        System.out.println(element);
    }
}

From source file:Main.java

public static void main(String args[]) {
    List<Character> list = new ArrayList<Character>();

    list.add('X');

    System.out.println("Element added to list: " + list.get(0));

    Collection<Character> immutableCol = Collections.unmodifiableCollection(list);

    immutableCol.add('Y');
}

From source file:Main.java

public static void main(String[] args) throws Exception {

    List<Foo> foos = new ArrayList<>();

    IntStream.range(1, 4).forEach(num -> foos.add(new Foo("Foo" + num)));

    foos.forEach(f -> IntStream.range(1, 4).forEach(num -> f.bars.add(new Bar("Bar" + num + " <- " + f.name))));

    foos.stream().flatMap(f -> f.bars.stream()).forEach(b -> System.out.println(b.name));
}

From source file:Main.java

public static void main(String args[]) {
    List<String> arlst = new ArrayList<String>();

    // populate the list
    arlst.add("CSS");
    arlst.add("PHP");
    arlst.add("HTML");
    arlst.add("java2s.com");

    // create typesafe view of the collection
    Collection<String> tslst = Collections.checkedCollection(arlst, String.class);

    System.out.println(tslst);//from  ww w . j a v a  2  s.  com
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    List<Integer> list = new ArrayList<Integer>();

    int capacity = 100;
    ArrayBlockingQueue<Integer> queue = new ArrayBlockingQueue<Integer>(capacity);
    queue.put(0);//from ww w . ja  v a 2 s.  c o m
    queue.put(1);
    queue.put(2);
    queue.drainTo(list, 3);
    System.out.println(queue);
    System.out.println(list);
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    List<Integer> list = new ArrayList<Integer>();

    int capacity = 100;
    ArrayBlockingQueue<Integer> queue = new ArrayBlockingQueue<Integer>(capacity);
    queue.put(0);//  w ww.  jav  a 2  s.  c om
    queue.put(1);
    queue.put(2);
    queue.drainTo(list);
    System.out.println(queue);
    System.out.println(list);
}

From source file:Main.java

public static void main(String[] args) {
    List<String> colours = new ArrayList<String>();
    colours.add("red");
    colours.add("green");
    colours.add("blue");
    colours.add("yellow");
    colours.add("cyan");
    colours.add("white");
    colours.add("black");

    Collections.sort(colours);// w  w  w.  ja va2  s .c o m
    System.out.println(Arrays.toString(colours.toArray()));

    Collections.sort(colours, Collections.reverseOrder());
    System.out.println(Arrays.toString(colours.toArray()));
}