The java.lang.Object.hashCode() method returns a hash code value for the object. This method is supported for the benefit of hashtables such as those provided by java.util.Hashtable.
Following is the declaration for java.lang.Object.hashCode() method
public int hashCode()
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This method returns a hash code value for this object.
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The following example shows the usage of lang.Object.hashCode() method.
package com.tutorialspoint; import java.util.GregorianCalendar; public class ObjectDemo { public static void main(String[] args) { // create a new ObjectDemo object GregorianCalendar cal = new GregorianCalendar(); // print current time System.out.println("" + cal.getTime()); // print a hashcode for cal System.out.println("" + cal.hashCode()); // create a new Integer Integer i = new Integer(5); // print i System.out.println("" + i); // print hashcode for i System.out.println("" + i.hashCode()); } }
Let us compile and run the above program, this will produce the following result −
Sat Sep 22 00:35:34 EEST 2012 -458465658 5 5