Pads the string with 0x and 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 0x and 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 0x and zeros on the left until it has the
    * requested size.
    *
    * @param hexNumber
    * @param size
    * @return
    */
   public static String padHexString(String hexNumber, int size) {
       int stringSize = hexNumber.length();

       if(stringSize >= size) {
           return hexNumber;
       }

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

       return builder.toString() + hexNumber;
   }
}

   
    
    
  

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