Java Vector clear() Method

The clear() method of Java Vector class is used to remove all of the elements from the vector which is in use.

Syntax:

Following is the declaration of clear() method:

Parameter:

This method does not accept any parameter.

Returns:

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

Exceptions:

Compatibility Version:

Java 1.2 and above

Example 1:

import java.util.Vector;
public class VectorClearExample1 {  
	public static void main(String arg[]) {
		//Create an empty Vector    
	      Vector<String> vc = new Vector<>();
	      //Add elements in the vector by using add() method
	      vc.add("A");
	      vc.add("B");
	      vc.add("C");	
	      //Print the size of vector
	      System.out.println("Size of Vector before clear() method: "+vc.size());
	      //Clear the vector
	      vc.clear();
	      System.out.println("Size of Vector after clear() method: "+vc.size());
            }
}

Test it Now

Output:

Size of Vector before clear() method: 3
Size of Vector after clear() method: 0

Example 2:

import java.util.Vector;
public class VectorClearExample2 {  
	public static void main(String arg[]) {
		//Create an empty Vector with initial capacity of 5      
		Vector<Integer> vecObject = new Vector<Integer>(5);
		//Add values in the vector
		vecObject.add(3);
		vecObject.add(5);
		vecObject.add(2);
		vecObject.add(4);
		vecObject.add(1);
	      System.out.println("Elements of Vector is: "+vecObject);	
	      //Clear vector
	      vecObject.clear();
	      System.out.println("Elements of Vector after clear(): "+vecObject);
            }
}

Test it Now

Output:

Elements of Vector is: [3, 5, 2, 4, 1]
Elements of Vector after clear(): []

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Java Vector class