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");

    names.forEach(System.out::println);
}

From source file:MainClass.java

public static void main(String[] args) {
    List cats = new ArrayList();
    for (int i = 0; i < 7; i++)
        cats.add(new Cat(i));
    Iterator e = cats.iterator();
    while (e.hasNext())
        ((Cat) e.next()).id();/* w w  w .ja  va 2 s  .com*/
}

From source file:Main.java

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

    aList.add("1");
    aList.add("2");
    aList.add("3");
    aList.add("4");
    aList.add("5");

    // Get an object of ListIterator using listIterator() method

    ListIterator listIterator = aList.listIterator();
    listIterator.next();/*  w w  w. j  a  v a  2 s. co  m*/
    listIterator.next();

    // remove element returned by last next method

    listIterator.remove();
    for (String str : aList) {
        System.out.println(str);
    }
}

From source file:Main.java

public static void main(String[] args) {
    List<String> list = new ArrayList<>();
    list.add("Java");
    list.add("R");
    list.add("CSS");
    list.add("XML");

    Collections.sort(list);// w  ww.j  a va  2s . c om
    System.out.println("List: " + list);

    Collections.reverse(list);
    System.out.println("List: " + list);

}

From source file:Main.java

public static void main(String args[]) {

    List<String> arlst = new ArrayList<String>();

    arlst.add("CSS");
    arlst.add("HTML");
    arlst.add("PHP");

    // search the list for key 
    int index = Collections.binarySearch(arlst, "HTML");

    System.out.println(index);/* w  w w .  ja  va  2 s .c o m*/
}

From source file:Main.java

public static void main(String args[]) {

    Collection<String> c = new ArrayList<String>();

    PriorityQueue<String> p = new PriorityQueue<String>(c);

    System.out.println(p);//from  ww w  .  j  a  v a  2  s  . c o  m
}

From source file:Main.java

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

    list.add("A");
    list.add("B");
    list.add("C");
    list.add("C");
    list.add("C");
    list.add("C");
    list.add("C");
    list.add("C");

    for (Iterator<String> iter = list.iterator(); iter.hasNext();) {
        String s = iter.next();//from   www. ja v  a 2s  .c om
        if (s.equals("B")) {
            iter.remove();
        } else {
            System.out.println(s);
        }
    }

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

From source file:Main.java

  public static void main(String[] args) {
  Collection<String> names = new ArrayList<>();
  System.out.printf("Size = %d, Elements = %s%n", names.size(), names);
  names.add("XML");
  names.add("HTML");
  names.add("CSS");
  System.out.printf("Size   = %d, Elements   = %s%n",
      names.size(), names);//  www  .  j a va 2  s  .  co  m
  names.remove("CSS");
  System.out.printf("Size   = %d, Elements   = %s%n",
      names.size(), names);
  names.clear();
  System.out.printf("Size   = %d, Elements   = %s%n",
      names.size(), names);
}

From source file:Main.java

public static void main(String[] args) {
    List<String> list = new ArrayList<>();
    list.add("Java");
    list.add("R");
    list.add("CSS");
    list.add("XML");

    System.out.println("List: " + list);

    // Uses List.sort() method with a Comparator
    list.sort(Comparator.comparing(String::length));

    System.out.println("Sorted List:  " + list);

}

From source file:Main.java

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

    // populate the list
    list.add("1");
    list.add("2");
    list.add("3");
    list.add("4");
    list.add("from java2s.com");

    // create a synchronized list
    List<String> synlist = Collections.synchronizedList(list);

    System.out.println("Sunchronized list is :" + synlist);
}