formatutils.java

Oracle的J2EE Sample

/*
 * @author  : Pushkala
 * @version : 1.0
 *
 * Development Environment : Oracle9i JDeveloper
 *
 * Name of the File : FormatUtils.java
 *
 * Creation / Modification History
 *    Pushkala        03-Jun-2002        Created
 *
 */
package oracle.otnsamples.ibfbs.utils;

import java.util.StringTokenizer;

/**
 * This class is called from the JSPs to format float value into String
 *
 * @version 1.0
 * @since   1.0
 */
public class FormatUtils {

  /**
   * This method takes an input float value and returns a string
   * with two decimal places.
   *
   * @param value float Value
   * @return The String representation of the input float value
   * @since 1.0
   */
  public static String formatFloatToString(float value) {

    String stringValue = "";

    // Convert the input value
    float interim = (float) ((int) (value * 100)) / 100;
    stringValue   = (new Float(interim)).toString();

    StringTokenizer st = new StringTokenizer(stringValue, ".");
    if (st.countTokens() == 2) {   // If the string has a decimal
      String str = st.nextToken(); //   Ignore first portion of string
      str = st.nextToken();        //   Use the Decimal portion of the string

      /* If the decimal portion has only one digit */
      if (str.length() < 2)  {
        stringValue += "0";        //   Append one zero in the decimal place
      }
    }
    else {                         // Else, the string has no decimal places
      stringValue += ".00";        //   Append two zeroes in the decimal place
    }

    return stringValue;
  }
}