The current price of USD/JPY Futures is 149.441 JPY — it has risen 0.00% in the past 24 hours.
Open interest is the number of contracts held by traders in active positions — they're not closed or expired. For USD/JPY Futures this number is 460.00. You can use it to track a prevailing market trend and adjust your own strategy: declining open interest for USD/JPY Futures shows that traders are closing their positions, which means a weakening trend.