Solved

Binary String Display

Posted on 2001-06-21
4
195 Views
Last Modified: 2010-03-31
I would like to create a Binary String Formatter?

Example:

If i feed it a 2...I would like it to display

00000010

OR

0010

OR

10

Depending on what I want the bit display length to be. I want the final string to be saved in a variable that I can pass to other classes for various displays??



Any suggestions?
0
Comment
Question by:Vernstump
4 Comments
 

Expert Comment

by:johnbrewer1980
ID: 6216207
how about the following function:
void printBinary(int number, int displayLength) {
   for (int i = displayLength - 1; i >= 0; --i) {
      System.out.print((number >> i) & 1);
   }    
}
0
 
LVL 2

Expert Comment

by:iDeb
ID: 6216208
take your class and override the toString method and put a for loop where you divide your number by 2 and depending upon whether there is a remainder you add a 1 or 0 to a string.
0
 
LVL 2

Expert Comment

by:venkat2000120699
ID: 6216222
Here is a traditional approach to the problem.

public class BinaryFormatter {
    public static void main(String args[]) {
        int a[] = new int[32];
        int n = 31;
        int maximumNumberOfBitsToDisplay = 4;
       
        int number = 10;
       
System.out.println("The bit pattern for " + number + " is:");
       
        while(number > 0) {
            int bit = number % 2;
            a[n--] = bit;
            number = (int)(number / 2);
        }
       
       
        for (int k=a.length - maximumNumberOfBitsToDisplay; k < a.length; k++) {
                 System.out.print(a[k]);
        }
     
    }//end of main()
}//end of class
0
 
LVL 1

Accepted Solution

by:
eattrig earned 50 total points
ID: 6216298
There is a static method in java.lang.Integer called toBinaryString(int).  It returns a String representation of the number (in decimal) which you pass in.  However, there is no parameter where the client can specify how much 0 padding to place on the end.  But you could write the following:

public static String getBinary(int num)
{
    String numStr = Integer.toBinaryString(num);
    // if you wanted a total of 8 digits in the String
    int addZeros = 8 - numStr.length();
    for (int x = 0; x < addZeros; x++)
        numStr = '0' + numStr;
    return numStr;
}
0

Featured Post

Live: Real-Time Solutions, Start Here

Receive instant 1:1 support from technology experts, using our real-time conversation and whiteboard interface. Your first 5 minutes are always free.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

An old method to applying the Singleton pattern in your Java code is to check if a static instance, defined in the same class that needs to be instantiated once and only once, is null and then create a new instance; otherwise, the pre-existing insta…
Introduction Java can be integrated with native programs using an interface called JNI(Java Native Interface). Native programs are programs which can directly run on the processor. JNI is simply a naming and calling convention so that the JVM (Java…
Viewers learn about the “while” loop and how to utilize it correctly in Java. Additionally, viewers begin exploring how to include conditional statements within a while loop and avoid an endless loop. Define While Loop: Basic Example: Explanatio…
Viewers will learn about arithmetic and Boolean expressions in Java and the logical operators used to create Boolean expressions. We will cover the symbols used for arithmetic expressions and define each logical operator and how to use them in Boole…

776 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question