Java Tutorial

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Java Sorting

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Java OOPs Concepts

OOPs - Object Oriented Programming Objects and Classes in Java Methods in Java Java Naming Conventions Constructors in Java Java this keyword Java static keyword Inheritance in Java Aggregation in Java Java super keyword Constructor Chaining and Constructor Overloading Java Polymorphism Static and Dynamic Binding in Java Java Abstraction Abstract class in Java Interface in Java Difference between Abstract class and Interface Java final keyword Packages in Java Access Modifiers in Java Java Wrapper classes Java Numbers Java Characters Java Integer Java Boolean Java Arrays Java Command Line Arguments Java strictfp Keyword Java Math

Java Strings

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Java Exceptions

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Generics in Java

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Java JDBC

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How to

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Java 8 Features

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Java Servlets Tutorial

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Java JSP Tutorial

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Jenkins Tutorial

Java Math Methods

Math.abs() Math.acos() Math.addExact() Math.asin() Math.atan () Math.atan2() Math.cbrt() Math.ceil() Math.copysign() Math.cos() Math.cosh() Math.decrementExact() Math.exp() Math.expm1() Math.floor() Math.floorDiv() Math.floorMod() Math.getExponent() Math.hypot() Math.IEEEremainder() Math.incrementExact() Math.log() Math.log10() Math.log1p() Math.max() Math.min() Math.multiplyExact() Math.multiplyFull() Math.negateExact() Math.nextAfter() Math.nextDown() Math.nextUp() Math.pow() Math.random() Math.rint() Math.round() Math.scalb() Math.signum() Math.sin() Math.sinh() Math.sqrt() Math.subtractExact() Math.tan() Math.tanh() Math.toDegrees() Math.toIntExact() Math.toRadians() Math.ulp()

Java String Methods

toCharArray() copyValueOf() endsWith() equals() equalsIgnoreCase() format() getBytes() getChars() hashCode() indexOf() intern() isEmpty() join() lastIndexOf() length() replace() replaceAll() replaceFirst() split() startsWith() subSequence() substring() toLowerCase() toUpperCase() trim() valueOf()

Java Conversion

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Misc

Functional Interfaces in Java Singleton class in Java Awesome explanation of Strings in Java Object class in Java Static class in Java All the important string methods in Java String Handling Method in Java What are Array strings in Java Advantages and Disadvantages of Strings in Java Big Decimal class in Java Class definition in Java Char and String differences in Java Difference between String, StringBuffer and StringBuilder in java Replace character in string Java String Coding Interview Questions in Java What is String in Java? String isnullorempty in Java String Matches in Java Trim Method in String Java Bean class in Java Libraries in Java Arithmetic Operations on String in Java Convert Char array to string in java Check whether Java is installed or not How to calculate time difference in Java How to stop execution after a certain time in Java Jagged Array in Java Java ArraylistRemove() Time Complexity Java Swing Time Picker Zigzag Array in Java Array and String based questions in Java Array and String with Examples in Java Best Practices to use String Class in Java What is string in Java why it's immutable Java String Java String Inbuilt functions Java String Matches vs Contains Sum of digits in string in java Check the presence of Substring in a String in java Java import packages Interfaces and Classes in Strings in Java Maximum length of string in java Hidden classes in Java Class memory in Java public static void main string args meaning in java Reverse a String in Java String Concatenation in Java Difference between String and Char Array in Java Buffer reader to read string in Java Split String into String Array in Java Reverse a String using Collections in Java

Java Math pow() Method

The pow() method of Math class returns the value of first argument raised to the power of second argument i.e. ab.

Syntax:

public static double pow(double a, double b)

Parameters:

The parameters ‘a’ and ‘b’ represent the base and the exponent.

Return Value:

The pow() method computes the value of ab.

Special cases of the pow() method are as follows:

  • It returns 1.0, is second argument passed is positive or negative zero.
  • It returns the result same as the first argument, if the second argument is 1.0.
  • It returns NaN, is either argument is NaN.
  • It returns positive infinity, if ‘a’ is greater than 1 and ‘b’ is positive infinity or ‘a’ is less than 1 and ‘b’ is negative infinity.
  • It returns positive zero, if ‘a’ is greater than 1 and ‘b’ is negative infinity or ‘a’ is less than 1 and ‘b’ is positive infinity.
  • It returns NaN, if absolute value of the first argument is equal to 1 and second argument is infinite.
  • It returns positive zero, if ‘a’ is positive zero and ‘b’ is greater than zero or ‘a’ is positive infinity and ‘b’ is less than zero.
  • It returns positive infinity, if ‘a’ is positive zero and ‘b’ is less than zero or ‘a’ is positive infinity and ‘b’ is greater than zero.
  • It returns positive zero, if ‘a’ is negative zero and ‘b’ is greater than zero but not a finite odd integer or ‘a’ is negative infinity and ‘b’ is less than zero but not a finite odd integer.
  • It returns negative zero, if ‘a’ is negative zero and ‘b’ is positive finite odd integer or ‘a’ is negative infinity and ‘b’ is negative finite odd integer.
  • It returns positive infinity, if ‘a’ is negative zero and ‘b’ is less than zero but not a finite odd integer or ‘a’ is negative infinity and ‘b’ is greater than zero but not a finite odd integer.
  • It returns negative infinity, if ‘a’ is negative zero and ‘b’ is negative finite odd integer or ‘a’ is negative infinity and ‘b’ is positive finite odd integer.
  • It returns ab, if both the arguments are integers.

Example 1:

public class JavaMathPowExample1 {
    public static void main(String[] args) {
        double a = 2;
        double b = 8;
        // computes the value of a raised to the power b
        System.out.println(Math.pow(a,b));
    }
}

Output:

4.0

Example 2:

public class JavaMathPowExample2 {
    public static void main(String[] args) {
        double a = 2;
        double b = -0;
        // returns 1.0, is second argument passed is positive or negative zero.
        System.out.println(Math.pow(a,b));
    }
}

Output:

1.0

Example 3:

public class JavaMathPowExample3 {
    public static void main(String[] args) {
        double a = 2;
        double b = 1;
        // returns the result same as the first argument, if the second argument is 1.0
        System.out.println(Math.pow(a,b));
    }
}

Output:

2.0

Example 4:

public class JavaMathPowExample4 {
    public static void main(String[] args) {
        double a = Double.POSITIVE_INFINITY;
        double b = -1;
        /* returns positive zero, if ‘a’ is positive zero and ‘b’ is greater than zero
        or ‘a’ is positive infinity and ‘b’ is less than zero*/
        System.out.println(Math.pow(a,b));
    }
}

Output:

0.0

Example 5:

public class JavaMathPowExample5 {
    public static void main(String[] args) {
        double a = Double.NEGATIVE_INFINITY;
        double b = -77;
        /* returns negative zero, if ‘a’ is negative zero and ‘b’ is positive finite odd integer or
        ‘a’ is negative infinity and ‘b’ is negative finite odd integer*/
        System.out.println(Math.pow(a,b));
    }
}

Output:

-0.0



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