Class hashCode() method in Java with Examples

Last Updated : 12 Jul, 2025
The hashCode() method of java.lang.Class class is used to get the hashCode representation of this entity. This method returns an integer value which is the hashCode. Syntax: 
public int hashCode()
Parameter: This method does not accept any parameter. Return Value: This method returns an integer value which is the hashCode. Below programs demonstrate the hashCode() method. Example 1: Java 
// Java program to demonstrate hashCode() method

public class Test {
    public static void main(String[] args)
        throws ClassNotFoundException
    {
        // returns the Class object for the class
        // with the specified name
        Class c1 = Class.forName("java.lang.String");

        System.out.println("Class represented by c1: "
                         + c1);

        // hashCode method on c1
        System.out.println("HashCode value: "
                           + c1.hashCode());
    }
}
Output: 
Class represented by c1: class java.lang.String
HashCode value: 589431969
Example 2: Java 
// Java program to demonstrate hashCode() method

public class Test {
    public static void main(String[] args)
        throws ClassNotFoundException
    {
        // returns the Class object for the class
        // with the specified name
        Class c1 = int.class;

        System.out.println("Class represented by c1: "
                         + c1);

        // hashCode method on c1
        System.out.println("HashCode value: "
                           + c1.hashCode());
    }
}
Output: 
Class represented by c1: int
HashCode value: 589431969
Reference: https://docs.oracle.com/javase/9/docs/api/java/lang/Class.html#hashCode--
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