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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