committedCharacterCount==string_length+1 does not throw IllegalArgumentException

committedCharacter count must be less than the string length, so string length+1
value on InputMethodEvent construction should raise IllegalArgument
Exception.

Problem on Windows 95 and Solaris

Compile and run the attached test code.
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import java.awt.event.InputMethodEvent;
import java.awt.font.TextHitInfo;
import java.awt.Canvas;
import java.text.AttributedString;
import java.text.AttributedCharacterIterator;

class test
{
static final String SAMPLE_STRING = "This is an attributed string.";
        static AttributedCharacterIterator attrCharIterator;

public static void main( String args[] )
{
boolean exceptionCaught = false;
InputMethodEvent ime;
Canvas c = new Canvas();
                attrCharIterator= new AttributedString( SAMPLE_STRING ).getIterator();

try
                                                
{
ime = new InputMethodEvent( c,
                                     InputMethodEvent.INPUT_METHOD_TEXT_CHANGED,
                                     attrCharIterator,
                                     SAMPLE_STRING.length()+1, null, null );
}
catch ( IllegalArgumentException iae )
{
exceptionCaught = true;
}

if ( exceptionCaught )
System.out.println( "passed." );
else
System.out.println( "failed. IllegalArgumentException is expected" );
}
}