Write a program to convert a binary number into decimal using inheritance

public class Binpow

{

public int pow(int n)

{

int res=1;

if(n!=0)

{

for(int i=1;i<=n;i++)

res=2*res;

n++;

}

return res;

}

}

import java.io.*;

public class Binary extends Binpow

{

int g=1;

int bin;

int dec;

int rem=1;

public void input()

throws IOException

{

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

System.out.println("ENTER the binary number");

bin=Integer.parseInt(br.readLine());

}

public void output()

{

}

public void cal()

{

int n=0;

int h=0;System.out.println("check");

while(rem!=0||bin!=0)

{

rem=bin%10;

bin=bin/10;

h=pow(n);

dec=rem*h+dec;

n++;

}

System.out.println("decimal number ="+dec);

}

}

import java.io.*;

public class Bimain

{

public static void main(String[] arg)

throws IOException

{

Binary c=new Binary();

c.input();

c.cal();

}

}