Java Vector set() Method

The set() method of Java Vector class is used to replace the element at the specified position in the vector with the specified element.

Syntax

Following is the declaration of set() method:

Parameter

Parameter	Description	Required/Optional
index	It is an index of the element which will be replaced.	Required
element	It is an element which will be stored at the specified position.	Required

Return

The set() method returns the element that was previously stored at the specified position.

Exceptions

ArrayIndexOutOfBoundsException- This method has thrown an exception if the index of an array is out of range i.e. (index < 0 || index >= size()).

Compatibility Version

Java 1.2 and above

Example 1

import java.util.*;
public class VectorSetExample1 {  
	public static void main(String arg[]) {		
	    //Create an empty vector 
	    Vector<Integer> vec = new Vector<>();
	    //Add elements in the vector
	    vec.add(1);
	    vec.add(2);
	    vec.add(3);
	    vec.add(4);
	    vec.add(6);
	    //Displaying the vector element
	    System.out.println("Vector element before set: " +vec);
	    //Set 5 at 4th index position
	    vec.set(4,5);	 	    
	    //Displaying the vector element again
	    System.out.println("Vector element after set: "+vec);
	    }            
}

Test it Now

Output:

Vector element before set: [1, 2, 3, 4, 6]
Vector element after set: [1, 2, 3, 4, 5]

Example 2

import java.util.*;
public class VectorSetExample2 {  
	public static void main(String arg[]) {	
		//Create an empty vector
		Vector<String> vec = new Vector<String>();
		//Add elements in the vector
		vec.add("Java");
		vec.add("Android");
		vec.add("Python");
		vec.add("COBOL");
	      //Displaying the vector element
	      System.out.println("Vector element before set: " +vec);
	      //Set JavaTpoint at 3rd index position
	      vec.set(3,"JavaTpoint");	 	    
	      //Displaying the vector element again
	      System.out.println("Vector element after set: "+vec);
	      }            
}

Test it Now

Output:

Vector element before set: [Java, Android, Python, COBOL]
Vector element after set: [Java, Android, Python, JavaTpoint]

Example 3

import java.util.*;
public class VectorSetExample3 {  
	public static void main(String arg[]) {	
	    //Create an empty vector 
	    Vector<Integer> vec = new Vector<>();
	    //Add elements in the vector
	    vec.add(10);
	    vec.add(20);
	    vec.add(30);	    
	    //Set 500 at 15th index position
	    vec.set(15,500);
	    //Displaying the vector element
	    System.out.println("Vector element before set: " +vec);
	    }            
}

Test it Now

Output:

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: Array index out of range: 15
	at java.base/java.util.Vector.set(Vector.java:798)
	at myPackage.VectorSetExample3.main(VectorSetExample3.java:12)

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