throw new IllegalArgumentException( Messages.getString( "exception.invalid.png.chunk", new Object[]{type}, ULocale.getDefault( ) ) );
throw new IllegalArgumentException( Messages.getString( "Chunk.exception.invalid.png.chunk", new Object[]{type}, ULocale.getDefault( ) ) );
	Chunk( String type )	{		this.type = type;		if ( type == null || type.length( ) != 4 )		{			throw new IllegalArgumentException( Messages.getString( "exception.invalid.png.chunk", new Object[]{type}, ULocale.getDefault( ) ) ); //$NON-NLS-1$		}		this.data = new ByteArrayOutputStream( );	}