Question

Changing a string into integer in Java help PLEASE !!!!!!

Answer 1

This is my code:



import java.util.Scanner;



public class DecimalToBinaryConverter {

public static void main(String[] args) {

Scanner in = new Scanner(System.in);

int decimalNumber;

String binaryNumber;

System.out.print("Enter decimal # ");

decimalNumber = in.nextInt();

binaryNumber = "";

while (decimalNumber != 0) {

// add spaces to separate 4-digit groups

if (binaryNumber.length() % 5 == 0)

binaryNumber = " " + binaryNumber;

// extract last number o binaryy

binaryNumber = (decimalNumber % 2) + binaryNumber;

// cut last digit in binary representation

decimalNumber /= 2;

}

System.out.println("Binary: " + binaryNumber);

int bin = Integer.parseInt(binaryNumber);
System.out.print ("hi" + bin);

}

}

Answer 2

I want to vhange the value of binaryNumber into an integer....and I did so by doing this

int bin = Integer.parseInt(binaryNumber);



but it keeps showing error and won't print it........WHYWHYWHY :(

Answer 3

My code is changing a decimal number into a binary number by the way

Answer 4

Everything about the code is fine up to there btw

Answer 5

I think you need to also tell it that your number is in binary, so use:
Integer.parseInt(binaryNumber, 2)

Answer 6

the 2nd parameter tells it that you have a number in base 2

Answer 7

Really? Oh thanks! I'll try that!! Thank you!!

Answer 8

yw

Answer 9

It didn't work ..... hmmm

Answer 10

can you tell me what is in your string binaryNumber?

Answer 11

ok - looks like you have embedded spaces in binaryNumber - you need to strip those before converting to Integer

Answer 12

Integer.parseInt(binaryNumber.replace(" ", ""), 2)

Answer 13

*headdesk* thanks again!

Answer 14

:) yw

Answer 15

It worked!!!!! <333333

Answer 16

public class ConvertIntToString {
public static void main(String[] args) {

int aInt = 1;

String aString = Integer.toString(aInt);
// or
String anotherString = "" + aInt;

}
}

Answer 17

pottersheep, you may want to think about doing the number->string conversion recursively.