JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

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Program: How to round-off decimal number to nearest integer in java?


Description:

Math.round() method returns closest integer or long value for the given decimal value.


Code:
package com.java2novice.math;

public class MyRoundEx {

	public static void main(String a[]){
		System.out.println("23.2 after rounding: "+Math.round(23.2));
		System.out.println("16.8 after rounding: "+Math.round(16.8));
		System.out.println("15.5 after rounding: "+Math.round(15.5));
	}
}

Output:
23.2 after rounding: 23
16.8 after rounding: 17
15.5 after rounding: 16
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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
What is fail-fast in java?
A fail-fast system is nothing but immediately report any failure that is likely to lead to failure. When a problem occurs, a fail-fast system fails immediately. In Java, we can find this behavior with iterators. Incase, you have called iterator on a collection object, and another thread tries to modify the collection object, then concurrent modification exception will be thrown. This is called fail-fast.
Famous Quotations
Insanity: doing the same thing over and over again and expecting different results.
-- Albert Einstein

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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