Testing the Math class methods : Math Functions « Development « Java Tutorial






  1. Java Tutorial
  2. Development
  3. Math Functions
public class MainClass
{
   public static void main( String args[] )
   {
      System.out.printf( "Math.abs( 23.7 ) = %f\n", Math.abs( 23.7 ) );
      System.out.printf( "Math.abs( 0.0 ) = %f\n", Math.abs( 0.0 ) );
      System.out.printf( "Math.abs( -23.7 ) = %f\n", Math.abs( -23.7 ) );
      System.out.printf( "Math.ceil( 9.2 ) = %f\n", Math.ceil( 9.2 ) );
      System.out.printf( "Math.ceil( -9.8 ) = %f\n", Math.ceil( -9.8 ) );
      System.out.printf( "Math.cos( 0.0 ) = %f\n", Math.cos( 0.0 ) );
      System.out.printf( "Math.exp( 1.0 ) = %f\n", Math.exp( 1.0 ) );
      System.out.printf( "Math.exp( 2.0 ) = %f\n", Math.exp( 2.0 ) );
      System.out.printf( "Math.floor( 9.2 ) = %f\n", Math.floor( 9.2 ) );
      System.out.printf( "Math.floor( -9.8 ) = %f\n", Math.floor( -9.8 ) );
      System.out.printf( "Math.log( Math.E ) = %f\n", Math.log( Math.E ) );
      System.out.printf( "Math.log( Math.E * Math.E ) = %f\n", Math.log( Math.E * Math.E ) );
      System.out.printf( "Math.max( 2.3, 12.7 ) = %f\n",Math.max( 2.3, 12.7 ) );
      System.out.printf( "Math.max( -2.3, -12.7 ) = %f\n",Math.max( -2.3, -12.7 ) );
      System.out.printf( "Math.min( 2.3, 12.7 ) = %f\n",Math.min( 2.3, 12.7 ) );
      System.out.printf( "Math.min( -2.3, -12.7 ) = %f\n",Math.min( -2.3, -12.7 ) );
      System.out.printf( "Math.pow( 2.0, 7.0 ) = %f\n",Math.pow( 2.0, 7.0 ) );
      System.out.printf( "Math.pow( 9.0, 0.5 ) = %f\n", Math.pow( 9.0, 0.5 ) );
      System.out.printf( "Math.sin( 0.0 ) = %f\n", Math.sin( 0.0 ) );
      System.out.printf( "Math.sqrt( 900.0 ) = %f\n", Math.sqrt( 900.0 ) );
      System.out.printf( "Math.sqrt( 9.0 ) = %f\n", Math.sqrt( 9.0 ) );
      System.out.printf( "Math.tan( 0.0 ) = %f\n", Math.tan( 0.0 ) );
   } 
}

Math.abs( 23.7 ) = 23.700000
Math.abs( 0.0 ) = 0.000000
Math.abs( -23.7 ) = 23.700000
Math.ceil( 9.2 ) = 10.000000
Math.ceil( -9.8 ) = -9.000000
Math.cos( 0.0 ) = 1.000000
Math.exp( 1.0 ) = 2.718282
Math.exp( 2.0 ) = 7.389056
Math.floor( 9.2 ) = 9.000000
Math.floor( -9.8 ) = -10.000000
Math.log( Math.E ) = 1.000000
Math.log( Math.E * Math.E ) = 2.000000
Math.max( 2.3, 12.7 ) = 12.700000
Math.max( -2.3, -12.7 ) = -2.300000
Math.min( 2.3, 12.7 ) = 2.300000
Math.min( -2.3, -12.7 ) = -12.700000
Math.pow( 2.0, 7.0 ) = 128.000000
Math.pow( 9.0, 0.5 ) = 3.000000
Math.sin( 0.0 ) = 0.000000
Math.sqrt( 900.0 ) = 30.000000
Math.sqrt( 9.0 ) = 3.000000
Math.tan( 0.0 ) = 0.000000




6.17.Math Functions
6.17.1.Math Class Methods
6.17.2.Use math functions
6.17.3.Testing the Math class methods
6.17.4.Floating Point Number Enhancements in JDK 6
6.17.5.Math.scalb
6.17.6.Math.getExponent
6.17.7.Math.nextAfter
6.17.8.Math.nextUp
6.17.9.Math.copySign
6.17.10.Demonstrate toDegrees() and toRadians().
6.17.11.Find absolute value of float, int, double and long using Math.abs
6.17.12.Find ceiling value of a number using Math.ceil
6.17.13.Find exponential value of a number using Math.exp
6.17.14.Find floor value of a number using Math.floor
6.17.15.Find maximum of two numbers using Math.max
6.17.16.Find natural logarithm value of a number using Math.log
6.17.17.Find power using Math.pow
6.17.18.Find square root of a number using Math.sqrt
6.17.19.Round Java float and double numbers using Math.round
6.17.20.Math.min
6.17.21.Normalizes an angle to a relative angle.
6.17.22.Normalizes an angle to an absolute angle.
6.17.23.Normalizes an angle to be near an absolute angle
6.17.24.Calculate the floor of the log, base 2
6.17.25.Greatest Common Divisor (GCD) of positive integer numbers
6.17.26.Least Common Multiple (LCM) of two strictly positive integer numbers
6.17.27.Moving Average
6.17.28.Normalize an angle in a 2&pi wide interval around a center value.
6.17.29.Returns n!. Shorthand for n Factorial, the product of the numbers 1,...,n as a double.
6.17.30.Returns n!. Shorthand for n Factorial, the product of the numbers 1,...,n.
6.17.31.Returns the hyperbolic cosine of x.
6.17.32.Returns the hyperbolic sine of x.
6.17.33.Returns the natural log of the (http://mathworld.wolfram.com/BinomialCoefficient.html) Binomial Coefficient
6.17.34.Returns the natural logarithm of n!.
6.17.35.Round the given value to the specified number of decimal places. The value is rounded using the BigDecimal.ROUND_HALF_UP method.
6.17.36.Value is rounded using the given method which is any method defined in BigDecimal
6.17.37.sqrt(a^2 + b^2) without under/overflow