JAVA EXAMPLE PROGRAMS

Program: How to calculate natural logarithm value of a number in java?

Description:

Below example shows how to calculate natural logarithm value of a given number using Math.log() function.

Code:

package com.java2novice.math;

public class MyLogEx {

	public static void main(String a[]){
		
		System.out.println("Natural logarithm value of 2 is: "+Math.log(2));
		System.out.println("Natural logarithm value of 10 is: "+Math.log(10));
		System.out.println("Natural logarithm value of 15 is: "+Math.log(15));
	}
}

Output:

Natural logarithm value of 2 is: 0.6931471805599453
Natural logarithm value of 10 is: 2.302585092994046
Natural logarithm value of 15 is: 2.70805020110221

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Difference between Enumeration and Iterator

The functionality of Enumeration and the Iterator are same. You can get remove() from Iterator to remove an element, while while Enumeration does not have remove() method. Using Enumeration you can only traverse and fetch the objects, where as using Iterator we can also add and remove the objects. So Iterator can be useful if you want to manipulate the list and Enumeration is for read-only access.

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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.