The well-regarded Opera Festival of New Jersey, a summer music fiestival, has announced it is closing because of financial pressures. “The festival, which was founded in Lawrenceville, N.J., 20 years ago and has been praised by critics as a highlight of the region’s summer classical music season, has been troubled by debt since it moved to the McCarter Theater in Princeton five years ago. A spokesman said the festival ended its 2003 fiscal year just under $700,000 in debt.”