Java Float hashCode() method with Examples

by Online Tutorials Library July 22, 2022

Java Float hashCode() method

The hashCode() method of Java Float class returns the hash code for this Float. The result is represented as integer bit representation whose value is same as produced by the floatToIntBits(float) method. The hashCode() method of Float class overrides the hashCode() method of class Object.

Syntax:

Parameters:

NA
The value provided to hash.

Return Value:

This method returns a hash code value for this float object.

Example 1

  public class FloatHashcodeExample1 {        public static void main(String[] args) {            Float f1 = new Float(0);          System.out.println(“1. Hash Value = ” +f1.hashCode());            Float f2= new Float(679.0);          System.out.println(“n2. Hash Value = ” +f2.hashCode());            //passing decimal value          Float f3 = new Float(679.0001);          System.out.println(“n3. Hash Value = ” +f3.hashCode());            //passing negative integer          Float f4 = new Float(-679);          System.out.println(“n4. Hash Value = ” +f4.hashCode());        }  }  

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Output:

1. Hash Value = 0    2. Hash Value = 1143586816    3. Hash Value = 1143586818    4. Hash Value = -1003896832

Example 2

  public class FloatHashcodeExample2{        Float id;      Float admissionNo;        Float_hashcodeMethodExample2(){            Scanner scanner =new Scanner(System.in);          System.out.println(“nEnter your admission No”);          Float admissionNo=scanner.nextFloat();          //hashCode() method will create unique ID for each unique AdmissionNo          System.out.println(“Your id is : “+Float.hashCode(admissionNo));      }        public static void main(String[] args) {    Float_hashcodeMethodExample2 obj= new Float_hashcodeMethodExample2();  Float_hashcodeMethodExample2 obj1= new Float_hashcodeMethodExample2();        }    }  

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Output:

Enter your admission No  1197  Your id is : 1150656512    Enter your admission No  1198  Your id is : 1150664704

Example 3

  import java.lang.*;      public class FloatHashcodeExample3 {            public static void main(String[] args) {                float f1 = 94f;              Float f2 =new Float(f1);              //hash code method              int f3 = f2.hashCode();              System.out.println(“HAsh code value = “+f3);                //Hash code static method              Float f4= new Float(94f);              System.out.println(“Float value  = “+Float.hashCode(f4));          }      }  

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Output:

HAsh code value = 1119617024  Float value  = 1119617024

Example 4

  public class FloatHashcodeExample4 {            public static void main(String[] args) {                    float f1=67.89f;            Float f2 =new Float(f1);            Float f3= f2.hashCode();            System.out.println(“hash value = “+f3);      }  }  

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Output:

Error:(11, 30) java: incompatible types: int cannot be converted to java.lang.Float

Note: Here with hashCode() method, we are converting the object into int bits and without any explicit cast, we are putting it into Float, so it is giving us an error. Either we should typecast it or should directly call this method in println function.

Next TopicJava Float

byteValue()compare compareTo()doubleValue()equals()float floatToIntBits()floatToRawIntBits()floatValue()hashcode()intBitsToFloat()intValue()java longValue()parseFloat()shortValue()valueOf()

Java Float hashCode() method with Examples

Java Float hashCode() method

Syntax:

Parameters:

Return Value:

Example 1

Example 2

Example 3

Example 4

Note: Here with hashCode() method, we are converting the object into int bits and without any explicit cast, we are putting it into Float, so it is giving us an error. Either we should typecast it or should directly call this method in println function.

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