How to convert decimal to binary, octal and hex String in Java? Example

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

Converting decimal to binary in Java Example

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

A 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.

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