JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

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Program: Write a program to convert decimal number to binary format.


Description:

Write a program to convert decimal number to binary format using numeric operations. Below example shows how to convert decimal number to binary format using numeric operations.


Code:
package com.java2novice.algos;

public class DecimalToBinary {

	public void printBinaryFormat(int number){
		int binary[] = new int[25];
		int index = 0;
		while(number > 0){
			binary[index++] = number%2;
			number = number/2;
		}
		for(int i = index-1;i >= 0;i--){
			System.out.print(binary[i]);
		}
	}
	
	public static void main(String a[]){
		DecimalToBinary dtb = new DecimalToBinary();
		dtb.printBinaryFormat(25);
	}
}

Output:
11001
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Knowledge Centre
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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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java is registered trademark of Oracle.
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