十六进制转换十进制算法


public class TestString {

    public static void main(String[] args) {
        // TODO Auto-generated method stub

        Person2 p = new Person2();
        System.out.println(p);
        System.out.println(p.method());    
        
        System.out.println(p.hexToDec("aaaaa3"));
    }
}

class Person2 extends Object{
    private int oneResult;
    public String method(){
        Object s = new Object();
        s.hashCode();
        String superClassName = super.getClass().toString();
        String myClassName = new Person2().getClass().toString();
        return superClassName + "|" + myClassName + "|" + s.getClass().toString() +
         "|" + s.hashCode() + "|" + s.getClass().getName();
    }
    //十六进制转换十进制

    public int hexToDec(String num){
        int hexResult = 0;
        for(int i = 0; i < num.length(); i++){
            switch (num.charAt(i)){
            case 1:
                setOneResult(1);
                break;
            case 2:
                setOneResult(2);
                break;
            case 3:
                setOneResult(3);
                break;
            case 4:
                setOneResult(4);
                break;
            case 5:
                setOneResult(5);
                break;
            case 6:
                setOneResult(6);
                break;
            case 7:
                setOneResult(7);
                break;
            case 8:
                setOneResult(8);
                break;
            case 9:
                setOneResult(9);
                break;
            case 'a':
                setOneResult(10);
                break;
            case 'b':
                setOneResult(11);
                break;
            case 'c':
                setOneResult(12);
                break;
            case 'd':
                setOneResult(13);
                break;
            case 'e':
                setOneResult(14);
                break;
            }
            hexResult += (int) (this.getOneResult() * ( Math.pow(16,i) ));    
        }
        return hexResult;
    }
    public void setOneResult(int oneResult) {
        this.oneResult = oneResult;
    }
    public int getOneResult() {
        return oneResult;
    }
}