The java.util.GregorianCalendar.hashCode() is an in-built function in Java which generates hash code for this GregorianCalendar instance.
Syntax:
public int hashCode()
Parameters: This function does not accept any parameters.
Return Values: This function returns an integer value which represents the hash code for this GregorianCalendar instance.
Examples:
Input : Thu Jul 24 00:53:29 UTC 1997 Output : 2121703905 Input : Tue Jul 24 00:54:11 UTC 2018 Output : -909136554
Below programs illustrate the java.util.GregorianCalendar.hashCode() function:
Program 1:
// Java Program to illustrate hashCode() function// of GregorianCalendar class  import java.io.*;import java.util.*;  class GFG {     public static void main(String[] args) {            // Create a new calendar      GregorianCalendar c = (GregorianCalendar)                 GregorianCalendar.getInstance();        // Display the current date and time      System.out.println("Current Date and Time : "                                    + c.getTime());              // Display hashcode for this calendar      System.out.println("Hash Code:" + c.hashCode());   }} |
Output:
Current Date and Time : Fri Jul 27 11:43:16 UTC 2018 Hash Code:-612105832
Program 2:
// Java Program to illustrate hashCode() function// of GregorianCalendar class  import java.io.*;import java.util.*;  class GFG {     public static void main(String[] args) {            // Create a new calendar      GregorianCalendar c = (GregorianCalendar)                  GregorianCalendar.getInstance();        // Display the current date and time      System.out.println("Current Date and Time : "                                     + c.getTime());              c.add((GregorianCalendar.YEAR), -12);      System.out.println("Modified Date and Time : "                                    + c.getTime());              // Display hashcode for this calendar      System.out.println("Hash Code of the " +       "modified date and time:" + c.hashCode());   }} |
Output:
Current Date and Time : Fri Jul 27 11:43:18 UTC 2018 Modified Date and Time : Thu Jul 27 11:43:18 UTC 2006 Hash Code of the modified date and time:-1346149059
Reference: https://docs.oracle.com/javase/7/docs/api/java/util/GregorianCalendar.html#hashCode()
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