The get(index) method of CopyOnWriteArrayList returns the element at the specified index.
Syntax:
public E get(int index)
Parameters: The function accepts a mandatory parameter index which specifies the index of the element to be returned.
Return Value: The function returns the element at the given index.
Exceptions: The function throws IndexOutOfBoundsException if the index is out of range.
Below programs illustrate the above function:
Program 1:
// Java Program to illustrate the // CopyOnWriteArrayList get() method in Javaimport java.util.concurrent.CopyOnWriteArrayList;import java.util.*; public class GFG { public static void main(String[] args) { // create object of CopyOnWriteArrayList CopyOnWriteArrayList<Integer> ArrLis = new CopyOnWriteArrayList<Integer>(); // Add elements ArrLis.add(32); ArrLis.add(67); ArrLis.add(98); ArrLis.add(100); // print CopyOnWriteArrayList System.out.println("CopyOnWriteArrayList: " + ArrLis); // 2nd index in the arraylist System.out.println("Element at 2nd index: " + ArrLis.get(2)); }} |
Output:
CopyOnWriteArrayList: [32, 67, 98, 100] Element at 2nd index: 98
Program 2:
// Java Program to illustrate the // CopyOnWriteArrayList get() method in Javaimport java.util.concurrent.CopyOnWriteArrayList;import java.util.*; public class GFG { public static void main(String[] args) { // create object of CopyOnWriteArrayList CopyOnWriteArrayList<String> ArrLis = new CopyOnWriteArrayList<String>(); // Add elements ArrLis.add("gopal"); ArrLis.add("gfg"); ArrLis.add("jgec"); ArrLis.add("sudo"); // print CopyOnWriteArrayList System.out.println("CopyOnWriteArrayList: " + ArrLis); // 4th index element of the arraylist // out of range, hence error System.out.println("CopyOnWriteArrayList: " + ArrLis.get(4)); }} |
Output:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 4
at java.util.concurrent.CopyOnWriteArrayList.get(CopyOnWriteArrayList.java:388)
at java.util.concurrent.CopyOnWriteArrayList.get(CopyOnWriteArrayList.java:397)
at GFG.main(GFG.java:24)
Reference: https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CopyOnWriteArrayList.html#get-int-
