This article is about a simple java program which converts decimal number to binary, octal and hexadecimal format. When it was first came into my mind I though I would probably need to write whole code to convert decimal to various other radix or base numbers but when I looked Integer class and saw these two way of converting decimal to binary etc I was simple amazed. It’s indeed extremely easy to do this in java and you can also write this program or use at it is.

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__Converting decimal to binary in Java Example__

Java has many ways to change number system of particular number, you can convert any decimal number into either binary system, hexadecimal system or octal system by following same procedure. here is code example of converting any decimal number into binary number in Java.

//first way

//decimal to binary

String binaryString = Integer.toBinaryString(number);

System.out.println("decimal to binary: " + binaryString);

**//decimal to octal**

String octalString = Integer.toOctalString(number);

System.out.println("decimal to octal: " + octalString);

**//decimal to hexadecimal**

String hexString = Integer.toHexString(number);

System.out.println("decimal to hexadecimal: " + hexString);

//second way

binaryString = Integer.toString(number,2);

System.out.println("decimal to binary using Integer.toString: " + binaryString);

//decimal to octal

octalString = Integer.toString(number,8);

System.out.println("decimal to octal using Integer.toString: " + octalString);

//decimal to hexadecimal

hexString = Integer.toString(number,16);

System.out.println("decimal to hexadecimal using Integer.toString: " + hexString);

Nice and little tip to convert decimal to binary or decimal to Octal, hex. This comes very handy many times when we want to do a quick conversion.

__Related Java Tutorials__
## 3 comments :

In Java java.lang package give us this conversion capability.

JAVA : Conversion Between Binary, Octal, Decimal and Hexadecimal

I was looking for Java program to convert decimal to binary, because its my homework assignment :) your Sample program and explanation helps a lot dude.Please keep writing these simple Java programs.

Me too, I also got homework to write a Java program which converts Decimal number to binary and Hexadecimal. Thank you for this nice and simple Java program tutorial.

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