Question

* Returns a hexadecimal representation of the unsigned binary number. Uses

* an underscore to separate each group of 4 characters.

*

* @param b The binary number

* @return The hexadecimal representation of the binary number.

*/

public static String toHexString(boolean[] b) {

// PROGRAM 1: Student must complete this method

// return value is a placeholder, student should replace with correct return

return "not completed";

}

Answer 1

The answer to this question is as follows:

The code is as follows:

import java.util.*;
public class MyClass {
public static String toHexString(String b)
{
//converting binary string to decimal through parseint function
int decimal = Integer.parseInt(b,2);
//converting the decimal value to hexdecimal
String hexStr = Integer.toString(decimal,16);
return hexStr;
}
public static void main(String args[]) {
Scanner sc=new Scanner(System.in);
String binaryStr=sc.nextLine();
System.out.println("The hexa decimal value for the binary number "+binaryStr+" is "+toHexString(binaryStr));

}
}

The output is provided in the screenshot below: