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Decimal to Binary Conversion
The following example shows how to convert a number in Decimal system to Binary system and vice versa.
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package com.bethecoder.tutorials.core.integer;
public class Integer2Binary {
/**
* @param args
*/
public static void main(String[] args) {
int num = 21;
String str = Integer.toBinaryString(num);
System.out.println(num + "(decimal) in binary : " + str);
num = Integer.parseInt(str, 2);
System.out.println(str + "(binary) in decimal : " + num);
}
}
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It gives the following output,
21(decimal) in binary : 10101
10101(binary) in decimal : 21
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