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) {

    ArrayList<String> arrayList1 = new ArrayList<String>();
    arrayList1.add("1");
    arrayList1.add("2");
    arrayList1.add("3");

    ArrayList<String> arrayList2 = new ArrayList<String>();

    arrayList2.add("One");
    arrayList2.add("Two");
    arrayList2.add("Three");
    arrayList2.add("Four");
    arrayList2.add("Five");

    System.out.println(arrayList2);

    Collections.copy(arrayList2, arrayList1);
    System.out.println(arrayList2);
}

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  av a2 s. co  m*/
    System.out.println("List: " + list);

    int index = Collections.binarySearch(list, "CSS");
    System.out.println("CSS in List  is at " + index);

    index = Collections.binarySearch(list, "Javascript");
    System.out.println("Javascript in List is  at " + index);

}

From source file:Main.java

public static void main(String[] args) {

    Collection<Integer> list = new ArrayList<Integer>();
    list.add(9);/*from  ww  w . j a  v a  2 s  .  com*/
    Vector vec = new Vector(list);

    vec.add(4);
    vec.add(3);
    vec.add(2);
    vec.add(1);

    System.out.println(vec);
}

From source file:Main.java

public static void main(String[] argv) {
    List<String> arrayList1 = new ArrayList<String>();

    arrayList1.add("A");
    arrayList1.add("A");
    arrayList1.add("B");
    arrayList1.add("B");
    arrayList1.add("B");
    arrayList1.add("C");

    HashSet<String> hashSet = new HashSet<String>(arrayList1);

    List<String> arrayList2 = new ArrayList<String>(hashSet);

    for (Object item : arrayList2)
        System.out.println(item);
}

From source file:Main.java

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

    for (int i = 1; i <= 12; i++)
        list.add(new Integer(i));

    Collections.shuffle(list);/*from   w  w  w . j  a  v a  2s. c om*/
    System.out.println(list);
}

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");

    for (String str : aList) {
        System.out.println(str);//from w ww.j  av a2 s  .  c om
    }
    Iterator itr = aList.iterator();

    // remove 2 from ArrayList using Iterator's remove method.

    String strElement = "";

    while (itr.hasNext()) {
        strElement = (String) itr.next();
        if (strElement.equals("2")) {
            itr.remove();
            break;
        }
    }
    for (String str : aList) {
        System.out.println(str);
    }
}

From source file:Main.java

public static void main(String args[]) {

    // create an empty array list
    ArrayList<StringBuilder> arrlist1 = new ArrayList<StringBuilder>();

    // use add for new value
    arrlist1.add(new StringBuilder("from java2s.com"));

    // using clone to affect the objects pointed to by the references.
    ArrayList arrlist2 = (ArrayList) arrlist1.clone();

    // appending the string
    StringBuilder strbuilder = arrlist1.get(0);
    strbuilder.append("tutorials");

    System.out.println(arrlist1);

    System.out.println(arrlist2);
}

From source file:MainClass.java

public static void main(String[] args) {
    List myList = new ArrayList();
    myList.add("Hello");
    myList.add("World");
    myList.add("World");
    Set set = new HashSet(myList);

    System.out.println(set);//from ww w. j av a2  s  . c om
}

From source file:CompTest.java

public static void main(String args[]) {
    ArrayList u2 = new ArrayList();
    u2.add("Beautiful Day");
    u2.add("Stuck In A Moment You Can't Get Out Of");
    u2.add("Elevation");
    u2.add("Walk On");
    u2.add("Kite");
    u2.add("In A Little While");
    u2.add("Wild Honey");
    u2.add("Peace On Earth");
    u2.add("When I Look At The World");
    u2.add("New York");
    u2.add("Grace");

    Comparator comp = Comparators.stringComparator();
    Collections.sort(u2, comp);//from w ww  . j a  v a 2 s . c  o  m
    System.out.println(u2);

    Arrays.sort(args, comp);
    System.out.print("[");
    for (int i = 0, n = args.length; i < n; i++) {
        if (i != 0)
            System.out.print(", ");
        System.out.print(args[i]);
    }
    System.out.println("]");
}

From source file:Main.java

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

    List<String> list = new ArrayList<String>();
    list.add("A");
    list.add("B");
    list.add("C");
    list = Collections.unmodifiableList(list);
    list.add(1, "G");

    System.out.println(list);/* w  ww  . jav  a  2  s . c o  m*/

}