 |
|
| |
|
Math functions are used for performing various Mathematical operations. These functions are located in the Math class of java.lang package (java.lang.Math)
The class Math contains methods for performing basic numeric operations such as the elementary exponential, logarithm, square root, and trigonometric functions.
Math class contains the 2 main details called as field and method
Field Detail
Fields such as E = 2.718281845 and PI = 3.14159265358 constants are stored.
Method Detail
All other mathematical functions are stored
| Method | Syntax | Example | Result |
|---|---|---|---|
| abs() Returning the absolute value of a double value. |
static double abs(double) | Math.abs(-9876) | 9876 |
| ceil() This method returns the smallest (closest to negative infinity) double value. |
static double ceil(double) | Math.ceil(414.9) | 415 |
| floor() This method returns the largest (closest to positive infinity) double value. |
static double floor(double) | Math.floor(621.2) | 621 |
| exp() This method returns e raised to the power of a double value. |
static double exp(double) | Math.exp(5) | 148.41315910 |
| min() This method returns the smaller of two values. |
static int min(int,int) | Math.min(12,29) | 12 |
| max() This method returns the largest of two values. |
static int max(int,int) | Math.max(82,59) | 82 |
| pow() This method returns the value of the first argument raised to the power of the second argument. |
static double pow(double,double) | Math.pow(2,3) | 8 |
| round() This method returns the closest int to the argument. |
static int round(float) | Math.round(1654.9874f) | 1655 |
| sqrt() This method returns the correctly rounded positive square root of a double value. |
static double sqrt(double) | Math.sqrt(25) | 5.0 |
In above functions abs(),min(),max() are overloaded in java. that means you can pass int,float,double and long values also, Based on it they return same type value.
There are more math functions available. but above are the mostly used while developing an application.
class MathFunctions { public static void main(String args[]) { int first, second; first = Integer.parseInt(arg[0]); second = Integer.parseInt(arg[1]); System.out.println("Addition : "+ (first + second)); System.out.println("Subtraction : "+ (first - second)); System.out.println("Multiplication : "+ (first * second)); System.out.println("Division : "+ (first / second)); } }