Convert Decimal to Binary 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);


//javarevisited.blogspot.com/2011/10/convert-decimal-binary-octal-java.html#ixzz4uJhRMI1l