Java Vector setElementAt() Method with Examples

by Online Tutorials Library July 22, 2022

Java Vector setElementAt() Method

The setElementAt() method of Java Vector class is used to replace the component at the specified index of this vector to be the specified object.

Syntax

Following is the declaration of setElementAt() method:

Parameter

Parameter	Description	Required/Optional
index	It is the specified index where an element will be replaced.	Required
obj	It is the component which will be set at the specified position.	Required

Return

This method has return type void so, it does not return anything.

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 VectorSetElementAtExample1 {    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 setElementAt(): ” +vec);      //Set Element 5 at 4th index position      vec.setElementAt(5, 4);           //Displaying the vector element again      System.out.println(“Vector element after setElementAt(): “+vec);      }              }  

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Output:

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

Example 2

  import java.util.*;  public class VectorSetElementAtExample2 {    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 setElementAt(): ” +vec);        //Set “TutorAspire” at 3rd index position        vec.setElementAt(“TutorAspire”, 3);             //Displaying the vector element again        System.out.println(“Vector element after setElementAt(): “+vec);        }              }  

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Output:

Vector element before setElementAt: [Java, Android, Python, COBOL]  Vector element after setElementAt: [Java, Android, Python, TutorAspire ]

Example 3

  import java.util.*;  public class VectorSetElementAtExample3 {    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.setElementAt(15,500);     //Displaying the vector element      System.out.println(“Vector element after set: ” +vec);      }              }  

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Output:

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 500 >= 3  at java.base/java.util.Vector.setElementAt(Vector.java:552)  at myPackage.VectorSetElementAtExample3.main(VectorSetElementAtExample3.java:12)

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Java Vector setElementAt() Method with Examples

Java Vector setElementAt() Method

Syntax

Parameter

Return

Exceptions

Compatibility Version

Example 1

Example 2

Example 3

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