Java-Programs/Basic-Programs/BinaryToDec.java at master · githubanalyzeruser/Java-Programs · GitHub

36 lines (31 loc) · 928 Bytes

import java.util.Scanner;

/**

* @author Vidhikara

public class BinaryToDec {

public static void main(String[] args) {

Scanner sc=new Scanner(System.in);

System.out.println("Enter the binary no. - ");

String bin=sc.nextLine();

int flag=1;

long dec=0,num;

for(int i=0;i<bin.length();i++){

if(bin.charAt(i)=='1'|| bin.charAt(i)=='0')

flag=1;

else

flag=0;

}

if(flag==0){

System.out.println("Not a valid Binary Number!!!!");

}else{

num=Long.parseLong(bin);

for(int i=0;i<bin.length();i++){

dec+=((num%10)*Math.pow(2, i));

num=num/10;

}

System.out.println("Decimal Number is : "+(int)dec);

}

sc.close();

}

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