Java Vector hashCode() Method

The hashCode() method of Java Vector class is used to get the hashcode value for the vector which is in use.

Syntax:

Following is the declaration of hashCode() method:

Parameter:

This method does not accept any parameter.

Returns:

The hashCode() method returns the hash code value for this vector. It returns the hashcode in integer form.

Exceptions:

Compatibility Version:

Java 1.2 and above

Example 1:

import java.util.*;
public class VectorHashCodeExample1 {  
	public static void main(String arg[]) {	
	    //Create an empty vector
	    Vector<Integer> vec = new Vector<>();
	    //Add element in the vector
	    vec.add(1);
	    vec.add(-2);
	    vec.add(3);	    
	    vec.add(-4);
	    vec.add(5);
	    //Printing the element
	    System.out.println("Element in vector = "+vec);
	    //Get the hashcode for this vector
	    System.out.println("HashCode vector = "+vec.hashCode());	
	    }            
}

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Output:

Element in vector = [1, -2, 3, -4, 5]
HashCode vector = 29495854

Example 2:

import java.util.*;
public class VectorHashCodeExample2 {  
	public static void main(String arg[]) {	
	    //Create an empty vector
	    Vector < String > colors = new Vector < String > ();
	    //Add elements in the vector
          colors.add("White");
          colors.add("Green");
          colors.add("Black");
          colors.add("Pink");
          //Print the elements of this vector
          System.out.println("Color elements in vector: " +colors);
          //Get the hash code value for this vector
          System.out.println("HashCode: " +colors.hashCode());	
	    }            
}

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Output:

Color elements in vector: [White, Green, Black, Pink]
HashCode: 1877005970

Example 3:

import java.util.*;
public class VectorHashCodeExample3 {  
	public static void main(String arg[]) {	
	    //Create an empty vector
	    Vector<String> vec = new Vector<>();
	    //Add element in the vector
	    vec.add("@");
	    System.out.println(vec.hashCode());
	    vec.add("%");
	    System.out.println(vec.hashCode());
	    vec.add("=");
	    System.out.println(vec.hashCode());	
	    }            
}

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Output: