JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

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Program: How to get square root of a number in java?


Description:

Math.sqrt() function returns rounded positive square root of the given number.


Code:
package com.java2novice.math;

public class MySqrtEx {

	public static void main(String a[]){
		System.out.println("Square root of 16 is: "+Math.sqrt(16));
		System.out.println("Square root of 4.6 is: "+Math.sqrt(4.6));
		System.out.println("Square root of 21 is: "+Math.sqrt(21));
	}
}

Output:
Square root of 16 is: 4.0
Square root of 4.6 is: 2.1447610589527217
Square root of 21 is: 4.58257569495584
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List Of All Math Class Sample Programs:

  1. How to get absolute value in java?
  2. How to get cube root of a value in java?
  3. How to get ceiling value of a number in java?
  4. Example for Math.copySign() method.
  5. How to get exponential value of a number in java?
  6. Example for Math.expm1() method.
  7. How to get floor value of a number in java?
  8. How to get max number between two numbers?
  9. How to get min number between two numbers?
  10. Example for Math.pow() method.
  11. How to calculate the length of hypotenuse in java?
  12. How to calculate exponent of the given number?
  13. How to calculate natural logarithm value of a number in java?
  14. How to calculate base 10 logarithm value of a number in java?
  15. Example for Math.nextAfter() method.
  16. Example for Math.nextUp() method.
  17. How to get random number between 0 to 1 in java?
  18. Example for Math.rint() method.
  19. How to round-off decimal number to nearest integer in java?
  20. Example for Math.signum() method.
  21. How to get square root of a number in java?
  22. How to convert an angle from radians to degrees?
  23. How to convert an angle from degrees to radians?
  24. How to calculate trigonometric sine of an angle in java?
  25. How to calculate trigonometric cosine of an angle in java?
  26. How to calculate trigonometric tangent of an angle in java?
Knowledge Centre
Can we call servlet destory() from service()?
As you know, destory() is part of servlet life cycle methods, it is used to kill the servlet instance. Servlet Engine is used to call destory(). In case, if you call destory method from service(), it just execute the code written in the destory(), but it wont kill the servlet instance. destroy() will be called before killing the servlet instance by servlet engine.
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About Author

I'm Nataraja Gootooru, programmer by profession and passionate about technologies. All examples given here are as simple as possible to help beginners. The source code is compiled and tested in my dev environment.

If you come across any mistakes or bugs, please email me to [email protected].

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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java™ Platform Standard Ed. 8 - API Specification | Java is registered trademark of Oracle.
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