OverFlow and UnderFlow

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Float data type

The float data type is a single-precision 32-bit IEEE 754 floating point.

Float overflow

Maximum possible value is 3.4028235e+38 , When it exceeds this value it produces Infinity

float f = 3.4e38f;
float result = f*2;        
System.out.println(result); //Infinity

Float UnderFlow

Minimum value is 1.4e-45f, when is goes below this value it produces 0.0

float f = 1e-45f;
float result = f/1000;
System.out.println(result);

double data type

The double data type is a double-precision 64-bit IEEE 754 floating point.

Double OverFlow

Maximum possible value is 1.7976931348623157e+308 , When it exceeds this value it produces Infinity

double d = 1e308;
double result=d*2;      
System.out.println(result); //Infinity

Double UnderFlow

Minimum value is 4.9e-324, when is goes below this value it produces 0.0

double d = 4.8e-323;
double result = d/1000;
System.out.println(result); //0.0

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