２進数10進数変換(255 -> 11111111)想定

Bindec.java

/**
 * Created with IntelliJ IDEA.
 * User: Yutaka Fujii
 * Date: 13/03/27
 * Time: 9:24
 * To change this template use File | Settings | File Templates.
 */

//得た10進数を2進数に変換する。

public class Bindec {
    double x=0;
    Boolean binFlag[] = new Boolean[8];
    StringBuffer binStr = new StringBuffer();

    void changeBin(double x){
        for(int i = 0;i<8;i++){
            binFlag[i] = false;
            if(x > Math.pow(2,i)){
                x = x - Math.pow(2,i);
                binFlag[i] = true;
            }
//            System.out.println(i+":"+binFlag[i]);
            if(binFlag[i] == true){
                binStr.append(1);
            } else if(binFlag[i] == false){
                binStr.append(0);
            }
        }
        System.out.println(binStr);
    }

//    void changeDec(double x){
//        for(int i =1;i<9;i++){
////            String.valueOf(x).codePointAt(i);
//            System.out.println(Integer.);
//        }
//    }
}