A walk Through Math Class in Java
The Math class is present in java.lang package, this is a final class and all the methods present in Math class are static so we need not create an object to Math class to call them,
public final class Math extends Object{}
The Math class contains methods for performing basic numeric operations such as the elementary exponential, logarithm, square root, and trigonometric functions.
Here is the list of general purpose methods which are present in Math class
static double sin(double d) → This method returns the sin value of the d here d is in radians
static double cos(double d) → This method returns the cosine value of the d here d is in radians
static double tan(double d) → This method returns the tangent value of the d here d is in radians
static double log(double d) → This method returns the natural logarithmic value(base e) of d
static double log10(double d) → This method returns the base 10 logarithmic value of the d
static double pow(double d1,double d2) → This method returns the value of d1 to the power d2
static double sqrt(double d) → This method returns the square root value of the d
static double abs(double d) → This method returns the absolute value of the d
static double ceil(double d) → This method raises the given value to next integer value and if the integer value is passed to it then it returns the same integer value
static double floor(double d) → This method decreases the given value to previous integer value and if the integer value is passed to it then it returns the same integer value
static double round(d) → It returns the rounded value of d, if the fraction part is more or equal to 0.5 then 1 is added to integer part otherwise same integer part is returned
static double random() → This method returns a random number between 0 to 1
static double max(d1,d2) → It returns the max value of d1 and d2
static double min(d1,d2) → It returns the min value of d1 and d2
Lets test all these methods in a program:
package com.exercise;
public class MathClass {
public static void main(String[] args) {
double sin = Math.sin(0.5);
System.out.println(sin); // 0.479425538604203
double cos = Math.cos(0.5);
System.out.println(cos);// 0.8775825618903728
double tan = Math.tan(0.5);
System.out.println(tan); // 0.5463024898437905
double log = Math.log(2);
System.out.println(log); // 0.6931471805599453
double log10 = Math.log10(2);
System.out.println(log10); // 0.3010299956639812
double pow = Math.pow(2, 3);
System.out.println(pow); // 8.0
double sqrt = Math.sqrt(25);
System.out.println(sqrt); // 5.0
double exp = Math.exp(2);
System.out.println(exp); // 7.38905609893065
double abs = Math.abs(-189.23);
System.out.println(abs); // 189.23
double ceil = Math.ceil(4.5);
System.out.println(ceil); // 5.0
double floor = Math.floor(4.5);
System.out.println(floor); /// 4.0
long round = Math.round(145.567);
System.out.println(round); // 146
double random = Math.random();
System.out.println(random); // 0.5178217441160299
int max = Math.max(100, 200);
System.out.println(max); // 200
int min = Math.min(100, 200);
System.out.println(min); // 100
}
}
Thats all for this Math class.. See you in the next post.. Keep learning…
