Class hashCode() method in Java with Examples Last Updated : 27 Dec, 2019 Summarize Comments Improve Suggest changes Share Like Article Like Report 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-- Comment More infoAdvertise with us Next Article Charset hashCode() method in Java with Examples S srinam Follow Improve Article Tags : Java Java-lang package Java-Functions Java.lang.Class Practice Tags : Java Similar Reads Charset hashCode() method in Java with Examples The hashCode() method is a built-in method of the java.nio.charset returns the computed hashcode of any given charset. Syntax: public final int hashCode() Parameters: The function does not accepts any parameter. Return Value: The function returns the computed hashcode for the charset. Below is the i 1 min read Calendar hashCode() Method in Java with Examples The hashCode() method in Calendar class is used to return the hash code for this Calendar Object.Syntax: public int hashCode() Parameters: The method does not take any parameters.Return Value: The method returns the hash code value for this calendar object..Below programs illustrate the working of h 2 min read Date hashCode() method in Java with Examples The hashCode() method of Java Date class returns a value which is a hash code for this object. Syntax: public int hashCode() Parameters: The function does not accept any parameter. Return Value: It returns a hashCode value for this object. Exception: The function does not throws any exception. Progr 2 min read Boolean hashCode() method in Java with examples The hashCode() method of Boolean class is a built in method to return a int hashcode value corresponding to the Boolean object. Syntax BooleanObject.hashCode() Return Type: It returns a int hashcode value corresponding to the Boolean object. It returns 1231 if the Boolean object stores the value tru 1 min read Collator hashCode() method in Java with Example The hashCode() method of java.text.Collator class is used to get the hashCode for this Collator object. Syntax: public abstract int hashCode() Parameter: This method does not accept any parameter.Return Value: This method returns hash code value in integer format. Below are the examples to illustrat 2 min read Double hashCode() method in Java with examples The hashCode() method of Double class is a built-in method use to return the hashcode value of this Double object. Syntax: DoubleObject.hashCode() Parameters: It takes no parameters. Return Type: It returns an int value. The value returned is (int)(v^(v>>>32)) where v is a long variable equ 1 min read Like