- Java.util Package Classes
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- Java.util - ArrayDeque
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- Java.util - BitSet
- Java.util - Calendar
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- Java.util - Date
- Java.util - Dictionary
- Java.util - EnumMap
- Java.util - EnumSet
- Java.util - Formatter
- Java.util - GregorianCalendar
- Java.util - HashMap
- Java.util - HashSet
- Java.util - Hashtable
- Java.util - IdentityHashMap
- Java.util - LinkedHashMap
- Java.util - LinkedHashSet
- Java.util - LinkedList
- Java.util - ListResourceBundle
- Java.util - Locale
- Java.util - Observable
- Java.util - PriorityQueue
- Java.util - Properties
- Java.util - PropertyPermission
- Java.util - PropertyResourceBundle
- Java.util - Random
- Java.util - ResourceBundle
- Java.util - ResourceBundle.Control
- Java.util - Scanner
- Java.util - ServiceLoader
- Java.util - SimpleTimeZone
- Java.util - Stack
- Java.util - StringTokenizer
- Java.util - Timer
- Java.util - TimerTask
- Java.util - TimeZone
- Java.util - TreeMap
- Java.util - TreeSet
- Java.util - UUID
- Java.util - Vector
- Java.util - WeakHashMap
- Java.util Package Extras
- Java.util - Interfaces
- Java.util - Exceptions
- Java.util - Enumerations
- Java.util Useful Resources
- Java.util - Useful Resources
- Java.util - Discussion
Java Vector hashCode() Method
Description
The Java Vector hashCode() method is used to return the hash code value for this Vector.
Declaration
Following is the declaration for java.util.Vector.hashCode() method
public int hashCode()
Parameters
NA
Return Value
The method call returns the hash code value(int) for this list.
Exception
NA
Getting hashcode of a Vector of Integer Example
The following example shows the usage of Java Vector hashCode() method to get the hashcode of this vector. We're adding couple of Integers to the Vector object using add() method calls per element and using hashCode() method, we're getting hash code and printing it.
package com.tutorialspoint; import java.util.Vector; public class VectorDemo { public static void main(String[] args) { // create an empty Vector vec with an initial capacity of 4 Vector<Integer> vec = new Vector<>(4); // use add() method to add elements in the vector vec.add(4); vec.add(3); vec.add(2); vec.add(1); // let us get the hashcode of the vector System.out.println("Hash code: "+vec.hashCode()); } }
Output
Let us compile and run the above program, this will produce the following result −
Hash code: 1045631
Getting hashcode of a Vector of String Example
The following example shows the usage of Java Vector hashCode() method to get the hashcode of this vector. We're adding couple of Strings to the Vector object using add() method calls per element and using hashCode() method, we're getting hash code and printing it.
package com.tutorialspoint; import java.util.Vector; public class VectorDemo { public static void main(String[] args) { // create an empty Vector vec with an initial capacity of 4 Vector<String> vec = new Vector<>(4); // use add() method to add elements in the vector vec.add("Welcome"); vec.add("To"); vec.add("Tutorialspoint"); // let us get the hashcode of the vector System.out.println("Hash code: "+vec.hashCode()); } }
Output
Let us compile and run the above program, this will produce the following result −
Hash code: -1700837919
Getting hashcode of a Vector of Object Example
The following example shows the usage of Java Vector hashCode() method to get the hashcode of this vector. We're adding couple of Student objects to the Vector object using add() method calls per element and using hashCode() method, we're getting hash code and printing it.
package com.tutorialspoint; import java.util.Vector; public class VectorDemo { public static void main(String[] args) { // create an empty Vector vec with an initial capacity of 4 Vector<Student> vec = new Vector<>(4); // use add() method to add elements in the vector vec.add(new Student(1, "Julie")); vec.add(new Student(2, "Robert")); vec.add(new Student(3, "Adam")); // let us get the hashcode of the vector System.out.println("Hash code: "+vec.hashCode()); } } class Student { int rollNo; String name; Student(int rollNo, String name){ this.rollNo = rollNo; this.name = name; } @Override public String toString() { return "[ " + this.rollNo + ", " + this.name + " ]"; } }
Output
Let us compile and run the above program, this will produce the following result −
Hash code: 1143597102