Class Math

Class Math

• It provides us different static methods and data members for mathematical operations.
• Data member - static final double PI=3.1415926535897932384626433832;

Methods

• static int abs(int n)
• returns absolute value of specified number.
For ex:
int z = Math.abs ( 5 ) + Math.abs ( -5 ) ;
System.out.println( z ) ;
=> 10
• static long abs(long n)
• static float abs(float n)
• static double abs(double n)
• static int max( int n1 , int n2 , . . )
• returns greatest number from specified numbers .
For ex:
int z = Math.max( 543 , 7382 , 899 , 1234 ) ;
System.out.println( z ) ;
=> 7382
• static long max( long n1 , long n2 , . .)
• static float max( float n1 , float n2 , . .)
• static double max( double n1 , double n2 , . .)
• static int min(int n1,int n2, . . )
• returns lowest number from specified numbers .
For ex:
int z = Math.min(543 ,7382 ,899 ,1234);
System.out.println( z );
=> 543
• static long min(long n1,long n2 , . .)
• Similar methods for float and double
• static double sqrt(double n)
• It returns square root of specified value
For ex:
System.out.println( Math.sqrt( 10 ) ) ;
=> 3.17
• static double pow(double a,double b)
• It returns a raised to power b
For ex:
System.out.println( Math.pow( 3 , 4 ) );
=> 81
• static double ceil(double n)
• It returns lowest whole number which is greater than or equal to specified value.
For ex:
System.out.println( Math.ceil( 3.01 ) );
=> 4
• static double floor(double n)
• It returns greatest whole number which is lower than or equal to specified value.
For ex:
System.out.println( Math.ceil( 3.9999 ) );
=> 3
• static double sin(double n)
• static double cos(double n)
• static double tan(double n)
• It returns sin / cos / tan of specified value.
• static double random()
• -It returns a random number in range 0.0 to 1.0.

  class demo
  {
    public static void main(String args[])
    {
      for(int i=1;i<=10;i++)
      {
        double z=Math.sqrt(i);
        System.out.println("Sqrt of "+i+" is "+z);
      }
    }
  }

Sqrt of 1 is 1.0 
Sqrt of 2 is 1.4142135623730951
Sqrt of 3 is 1.7320508075688772
Sqrt of 4 is 2.0
Sqrt of 5 is 2.23606797749979
Sqrt of 6 is 2.449489742783178
Sqrt of 7 is 2.6457513110645907
Sqrt of 8 is 2.8284271247461903
Sqrt of 9 is 3.0
Sqrt of 10 is 3.1622776601683795