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BigInteger floatValue() Method in Java

Last Updated : 04 Dec, 2018
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The java.math.BigInteger.floatValue() converts this BigInteger to a float value. If the value returned by this function is too big for a magnitude to represent as a float then it will be converted to Float.NEGATIVE_INFINITY or Float.POSITIVE_INFINITY as appropriate. There is a chance that this conversion can lose information about the precision of the BigInteger value. Syntax: 
public float floatValue()
Returns: The method returns a float value which represents float value for this BigInteger. Examples: 
 Input: BigInteger1=32145 Output: 32145.0 Explanation: BigInteger1.floatValue()=32145.0. Input: BigInteger1=32145535361361525377 Output: 3.2145535E19 Explanation: BigInteger1.floatValue()=3.2145535E19. This BigInteger is too big for a magnitude to represent as a float then it will be converted to Float.NEGATIVE_INFINITY or Float.POSITIVE_INFINITY as appropriate.
Below programs illustrate floatValue() method of BigInteger class: Example 1: Java 
// Java program to demonstrate floatValue() method of BigInteger import java.math.BigInteger; public class GFG {  public static void main(String[] args)  {  // Creating 2 BigInteger objects  BigInteger b1, b2;  b1 = new BigInteger("32145");  b2 = new BigInteger("7613721");  // apply floatValue() method  float floatValueOfb1 = b1.floatValue();  float floatValueOfb2 = b2.floatValue();  // print floatValue  System.out.println("floatValue of "  + b1 + " : " + floatValueOfb1);  System.out.println("floatValue of "  + b2 + " : " + floatValueOfb2);  } }
Output: 
 floatValue of 32145 : 32145.0 floatValue of 7613721 : 7613721.0
Example 2: When return float is too big for a magnitude to represent as a float. Java 
// Java program to demonstrate floatValue() method of BigInteger import java.math.BigInteger; public class GFG {  public static void main(String[] args)  {  // Creating 2 BigInteger objects  BigInteger b1, b2;  b1 = new BigInteger("32145535361361525377");  b2 = new BigInteger("7613721535372632367351");  // apply floatValue() method  float floatValueOfb1 = b1.floatValue();  float floatValueOfb2 = b2.floatValue();  // print floatValue  System.out.println("floatValue of "  + b1 + " : " + floatValueOfb1);  System.out.println("floatValue of "  + b2 + " : " + floatValueOfb2);  } }
Output: 
 floatValue of 32145535361361525377 : 3.2145535E19 floatValue of 7613721535372632367351 : 7.6137214E21
Reference: https://docs.oracle.com/javase/7/docs/api/java/math/BigInteger.html#floatValue()

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AmanSingh2210
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