how to get binary value in java
import java.util.*; class Bin { //fields private Double number; //constructors public Bin(){ number = 0.0; } public Bin(Double num){ number = num; } //methods public ArrayList<String> reverseArrayList(ArrayList<String> alist) { ArrayList<String> array = new ArrayList<String>(); int x = 0; int i = alist.size() - 1; while(x < alist.size()){ array.add(alist.get(i)); i -= 1; x += 1; } return array; } //getter methods public ArrayList<String> getBinVal(){ ArrayList<String> binaryVal = new ArrayList<String>(); ArrayList<String> array = new ArrayList<String>(); Double num = number; Double sol1, check; while( num > 0 ) { sol1 = num/2; check = sol1 - Math.floor(sol1); if(check > 0) { binaryVal.add("1"); num = sol1 - 0.5; } else { binaryVal.add("0"); num = sol1; } } while(binaryVal.size() < 4) { binaryVal.add("0"); } array = reverseArrayList(binaryVal); return array; } } class MainClass { public static void main(String[] args) { //add the number in as a command line argument Double num = Double.valueOf(args[0]); //create an instance of Bin Bin value = new Bin(num); //print the binary value System.out.println(value.getBinVal()); } }
