Pads the string with zeros on the left until it has the requested size. : String Pad « Data Type « Java

1. Java
2. Data Type
3. String Pad

Pads the string with zeros on the left until it has the requested size.

   
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//package org.ancora.SharedLibrary;

/**
 * Methods for bit manipulation.
 *
 * @author Joao Bispo
 */
public class Util{
     private static final String ZERO = "0";
     private static final String HEX_PREFIX = "0x";
     /**
      * Pads the string with zeros on the left until it has the requested size.
      *
      * @param binaryNumber
      * @param size
      * @return
      */
     public static String padBinaryString(String binaryNumber, int size) {
         int stringSize = binaryNumber.length();
         if(stringSize >= size) {
             return binaryNumber;
         }

         int numZeros = size - stringSize;
         StringBuilder builder = new StringBuilder(numZeros);
         for(int i=0; i<numZeros; i++) {
             builder.append(ZERO);
         }

         return builder.toString() + binaryNumber;
     }
}

   
    
    
  

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