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Java basics

double


double is a Java primitive type. A double variable may store a double−precision floating point value. Since floating point data types are approximations of real numbers, you should generally never compare floating point numbers for equality. Java floating point numbers can represent infinity and NaN (not a number). The Double wrapper class defines the constants MIN_VALUE, MAX_VALUE, NEGATIVE_INFINITY, POSITIVE_INFINITY and NaN.

Syntax:
double d1 = 123.4;
// same value as d1, but in scientific notation
double d2 = 1.234e2;
float f1  = 123.4f;


Example:

double variable_name;


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