TVM Version History

Version 1.2.2-u - December 2003

Enhancements/Error Corrections:

• Begining with version TVM 1.2.2, the TVM bean is now distributed as open source software licensed under the terms of the GNU Lesser General Public License.
   
• Changed the package name to com.cedarspring.tvm
   
• Corrected an error in computeNumberOfPeriods method that occured when interestRate = 0
   
• Corrected localization errors in the demo applet and revised the GUI slightly
   
• Added JUnit tests to the dev environment (on-going)
   
• Began a project to document the algorithms, scaling, and rounding (on-going)

Known Errors:

• The component icons (TVM16x16.gif, TVM32x32.gif) are in the top level directory of the jar instead of under com/cedarspring/tvm/ as they should be. Due to this error, visual builders will display a blank entry on the palatte without the calculator icon. The component can still be selected and used normally, however.
   
• The component cannot be rebuilt under Java 5 due to an error in the /dev/build.xml file. The default is to build a component compatible with Java 1.1 so that it can be run with the Microsoft virtual machine. A source of Java 1.3 is required in Java 5 compiler to make this work. The entry should be:

     javac 
        optimize='true' 
        source="1.3"
        target="1.1" 
        srcdir="${src}" 
        destdir="${build}"
        
  

• The internationalization (/i18n) folder is missing from the classpath of the unit test task. It should be:

  	java classname="test.AllTests" fork="true"
  	  classpath path=".;${junit}/junit.jar;../TVM.jar;i18n" 
  

• The ErrorSupport module sets the severity of all error events as ErrorEvent.ERROR. It does not recognize warning or info messages. Currently this is not a problem since all events in the standard group actually have severity of ERROR. However it does become a problem if you extend the ErrorResource file with warning or info messages.
   
• The demo applet always displays years and effective interest with a period as the decimal separator. It does not change with locale. The labels do not stretch enough to accomodate different languages.

Version 1.2.1-u August 2002

Enhancements/Error Corrections:

• Synchronzation was removed.
   
• Added Enumeration to the AmortizationSchedule object. This will allow you to use the new Java Standard Tag Library (JSTL) tags (such as forEach) to display an amortization schedule in a Java Server Page (JSP).
   
• Added the virtual property "years".
   
• Designated several properties as "Expert" (Please see the properties table).
   
• Corrected an error that caused a SecurityException when the component was added to the palette of some IDE's.
   
• Removed display names from property descriptors. Spaces in the display names caused problems in some IDE's which used them to form method names.
   
• New methods:
  • AmortizationSchedule.getAmortizations()
  • TVMu.setYears(BigDecimal years)
  • TVMu.getYears()

Version 1.2.0 November 2000:

Enhancements/Error Corrections:

• Added a method to the TVM class to create loan amortization schedules:
  • getAmortizationSchedule() - Returns an amortization schedule. The schedule is a list of Amortization objects, each containing the principal, interest, and ending balance for one payment period.
• Added two public classes to support loan amortization:
  • AmortizationSchedule
  • Amortization
• Added version information to the jar file which can be extracted by Package methods:
  

    Package p = Package.getPackage("com.getobjects.tvm");
    if (p != null)
      {		
         System.out.println("Name: " + p.getName());
         System.out.println("SpecificationTitle: "    + p.getSpecificationTitle());
         System.out.println("SpecificationVersion: "  + p.getSpecificationVersion());
         System.out.println("SpecificationVendor: "   + p.getSpecificationVendor());
         System.out.println("ImplementationTitle: "   + p.getImplementationTitle());
         System.out.println("ImplementationVersion: " + p.getImplementationVersion());
         System.out.println("ImplementationVendor: "  + p.getImplementationVendor());
      }
  

  See Sun's Package Versioning Specification for more info.

Version 1.1.0 January 2000

Enhancements/Error Corrections:

• New methods:
  • getEffectiveRate() - Returns an annual effective rate that is equivalent to the annual nominal interest rate (read-only property).
  • setLocale(Locale); getLocale() - Sets and returns a the locale. Prior versions always used the default locale.
  • clearMessage() - Clears the last message returned by any ErrorEvent.
• Corrected a property name error in the BeanInfo class.

Version 1.0.0 October 1999

• First Release.

See the JavaDocs for more detail about the bean and concepts for information about time value of money.

Current Requirements and Limitations: