Java Vector hashCode() Method with Examples

by Online Tutorials Library July 22, 2014

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:

95  2982  92503

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Syntax:

Parameter:

Returns:

Exceptions:

Compatibility Version:

Example 1:

Example 2:

Example 3:

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