» » Float Wrapper Class

  • Float class is presented in java.lang package
  • java.lang.Float class is used to represent primitive float value to Float object.

Float Class Definition

  1. public final class Float
  2. extends Number
  3. implements Comparable<Float>

Float Class Constructors

1.public Float(double value)


  1. package com.instanceofjavatutorial;
  2.  
  3. public class FloatDemo {
  4.  
  5. public static void main(String[] args) {
  6.  

  7.  Float f = new Float(22.56d);
  8.   System.out.println(f);
  9.  
  10.  
  11. }
  12. }

Output:
  1. 22.56


2.public Float(float value)


  1. package com.instanceofjavatutorial;
  2.  
  3. public class FloatDemo {
  4.  
  5. public static void main(String[] args) {
  6.  

  7.  Float f = new Float(22.56f);
  8.   System.out.println(f);
  9.  
  10.  
  11. }
  12. }

Output:
  1. 22.56


3.public Float(String s) throws NumberFormatException


  1. package com.instanceofjavatutorial;
  2.  
  3. public class FloatDemo {
  4.  
  5. public static void main(String[] args) {
  6.  

  7.  Float f = new Float("22.56f");
  8.   System.out.println(f);
  9.  
  10.  
  11. }
  12. }

Output:
  1. 22.56

Float Class Methods:

1.public static Float valueOf(String s) throws NumberFormatException 

  • This method used to convert string value to float value. If the string contains non parsable value then it throws NumberFormatException 

  1. package com.instanceofjavatutorial;
  2.  
  3. public class FloatValueOfDemo {
  4.  
  5. public static void main(String[] args) {
  6.  
  7.  String str="56.32";

  8.  Float f = Float.valueOf(str);
  9.   System.out.println(f);
  10.  
  11.  
  12. }
  13. }

Output:
  1. 56.32

2.public String toString()
  • This method returns String value from Float Object.

  1. package com.instanceofjavatutorial;
  2.  
  3. public class FloatValueOfDemo {
  4.  
  5. public static void main(String[] args) {
  6.   
  7.  Float f = new Float("12.3")
  8.  String str=f.toString();

  9.   System.out.println(str);
  10.  
  11.  
  12. }
  13. }



Output:
  1. 12.3

3.public static float parseFloat(String s) throws NumberFormatException

  • This method returns float value from string object. If string doesnt contains parsable float value then throws NumberFormatException 

  1. package com.instanceofjavatutorial;
  2.  
  3. public class FloatDemo {
  4.  
  5. public static void main(String[] args) {
  6.  
  7.  String str="20";

  8.  Float f = Float.parseFloat(str);
  9.   System.out.println(f);
  10.  
  11.  
  12. }
  13. }

Output:
  1. 20.0



Instance Of Java

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