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Convert Binary to Decimal 
 

In this section, you will learn how to convert a binary number into a decimal number.

 

Convert Binary to Decimal

                         

In this section, you will learn how to convert  binary number  into a decimal number. The java.lang package provides the facility to convert the integer data into the binary to decimal. 

Code Description:

In this program, you will learn the use of parseLong() method.  Define a class "BinaryToDecimal" using the  parseLong() method. This method is used to parse the string argument as a signed decimal long. This method has been used for converting a long to a string and a String to a long.

Here is the code of this program:

import java.lang.*;
import java.io.*;

public class BinaryToDecimal{
  public static void main(String[] argsthrows IOException{
    BufferedReader bf= new BufferedReader(new InputStreamReader(System.in));
    System.out.print("Enter the Binary value: ");
    String str = bf.readLine();
    long num = Long.parseLong(str);
    long rem;
    while(num > 0){
      rem = num % 10;
      num = num / 10;
      if(rem != && rem != 1){
        System.out.println("This is not a binary number.");
        System.out.println("Please try once again.");
        System.exit(0);
      }
    }
    int i= Integer.parseInt(str,2);
    System.out.println("Decimal:="+ i);
  }
}

Download this program.

Output of this program:

C:\corejava>java BinaryToDecimal
Enter the Binary value:
10010
Decimal:=18
C:\corejava>_

                         

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it is good for the new learning people

Posted by nbv prakash on Wednesday, 07.30.08 @ 00:46am | #69846

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