List get() method in Java with Examples
The get() method of List interface in Java is used to get the element present in this list at a given specific index.
Syntax :
E get(int index) Where, E is the type of element maintained by this List container.
Parameter : This method accepts a single parameter index of type integer which represents the index of the element in this list which is to be returned.
Return Value: It returns the element at the specified index in the given list.
Errors and exception : This method throws an IndexOutOfBoundsException if the index is out of range (index=size()).
Below programs illustrate the get() method:
Program 1 :
// Java code to demonstrate the working of // get() method in List import java.util.*; public class GFG { public static void main(String[] args) { // creating an Empty Integer List List<Integer> arr = new ArrayList<Integer>( 4 ); // using add() to initialize values // [10, 20, 30, 40] arr.add( 10 ); arr.add( 20 ); arr.add( 30 ); arr.add( 40 ); System.out.println( "List: " + arr); // element at index 2 int element = arr.get( 2 ); System.out.println( "The element at index 2 is " + element); } } |
Output:
List: [10, 20, 30, 40] The element at index 2 is 30
Program 2 : Program to demonstrate the error.
// Java code to demonstrate the error of // get() method in List import java.util.*; public class GFG { public static void main(String[] args) { // creating an Empty Integer List List<Integer> arr = new ArrayList<Integer>( 4 ); // using add() to initialize values // [10, 20, 30, 40] arr.add( 10 ); arr.add( 20 ); arr.add( 30 ); arr.add( 40 ); try { // Trying to access element at index 8 // which will throw an Exception int element = arr.get( 8 ); } catch (Exception e) { System.out.println(e); } } } |
Output:
java.lang.IndexOutOfBoundsException: Index: 8, Size: 4
Reference: https://docs.oracle.com/javase/7/docs/api/java/util/List.html#get(int)
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