ArrayList get(index) method in Java with examples

The get() method of ArrayList in Java is used to get the element of a specified index within the list.

Syntax :

get(index)

Parameter :
index:index of the elements to be returned. It is of data-type int.

Returns :
It returns the element at the specified index in the given list.

Errors and exception :
IndexOutOfBoundsException-if the index is out of range (index=size())



Example 1 : Program to demonstrate the working of get()

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// Java code to demonstrate the working of
// get() method in ArrayList
  
// for ArrayList functions
import java.util.ArrayList;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // creating an Empty Integer ArrayList
        ArrayList<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);
    }
}

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Output :

List: [10, 20, 30, 40]
the element at index 2 is 30

Example 2 : Program to demonstrate the error

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// Java code to demonstrate the error of
// get() method in ArrayList
  
// for ArrayList functions
import java.util.ArrayList;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // creating an Empty Integer ArrayList
        ArrayList<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);
  
        // element at index 2
        int element = arr.get(5);
  
        System.out.println("the element at index 2 is " + element);
    }
}

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Output :

Exception in thread "main" java.lang.IndexOutOfBoundsException: Index: 5, Size: 4
    at java.util.ArrayList.rangeCheck(ArrayList.java:657)
    at java.util.ArrayList.get(ArrayList.java:433)
    at GFG.main(GFG.java:22)

Reference: link



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