Netbeans in my 2017 MacBook Pro 15 keep CPU over 100% for nothing

Netbeans in my 2017 MacBook Pro 15 keep CPU over 100% for nothing, no task in progress window and the “slowness detection” has nothing, if using it without AC power, it eats up the battery very quick.

netbeans is not optimize for power
If netbeans detected it is running slowly, it will show a notification. But in this case, no notification at all !

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