Vector set() Method in Java
The Java.util.Vector.set() method is used to replace any particular element in the vector, created using the Vector class, with another element.
Syntax:
Vector.set(int index, Object element)
Parameters: This function accepts two mandatory parameters as shown in the above syntax and described below.
- index: This is of integer type and refers to the position of the element that is to be replaced from the vector.
- element: It is the new element by which the existing element will be replaced and is of the same object type as the vector.
Return Value: The method returns the previous value from the vector that is replaced with the new value.
Below programs illustrate the Java.util.Vector.set() method:
Program 1:
// Java code to illustrate set() import java.util.*; public class VectorDemo { public static void main(String args[]) { // Creating an empty Vector Vector<String> vec_tor = new Vector<String>(); // Use add() method to add elements in the vector vec_tor.add("Geeks"); vec_tor.add("for"); vec_tor.add("Geeks"); vec_tor.add("10"); vec_tor.add("20"); // Displaying the Vector System.out.println("Vector: " + vec_tor); // Using set() method to replace Geeks with GFG System.out.println("The Object that is replaced is: " + vec_tor.set(2, "GFG")); // Using set() method to replace 20 with 50 System.out.println("The Object that is replaced is: " + vec_tor.set(4, "50")); // Displaying the modified vector System.out.println("The new Vector is:" + vec_tor); } } |
Output:
Vector: [Geeks, for, Geeks, 10, 20] The Object that is replaced is: Geeks The Object that is replaced is: 20 The new Vector is:[Geeks, for, GFG, 10, 50]
Program 2:
// Java code to illustrate set() import java.util.*; public class VectorDemo { public static void main(String args[]) { // Creating an empty Vector Vector<Integer> vec_tor = new Vector<Integer>(); // Use add() method to add elements in the vector vec_tor.add(12); vec_tor.add(23); vec_tor.add(22); vec_tor.add(10); vec_tor.add(20); // Displaying the Vector System.out.println("Vector: " + vec_tor); // Using set() method to replace 12 with 21 System.out.println("The Object that is replaced is: " + vec_tor.set(0, 21)); // Using set() method to replace 20 with 50 System.out.println("The Object that is replaced is: " + vec_tor.set(4, 50)); // Displaying the modified vector System.out.println("The new Vector is:" + vec_tor); } } |
Output:
Vector: [12, 23, 22, 10, 20] The Object that is replaced is: 12 The Object that is replaced is: 20 The new Vector is:[21, 23, 22, 10, 50]
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