The ArrayList method trimToSize has the following API:
public void trimToSize( )
It trims the capacity of this ArrayList instance to be the list's current size.
ArrayList numbers = new ArrayList( );
numbers.add( 32 );
numbers.add( 17 );
numbers.add( 6 );
Use trimToSize to trim the capacity of numbers to its current size:

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The Answer of The ArrayList method trimToSize has the following API: public void trimToSize( ) It trims the capacity of this ArrayList instance to be the list's current size. ArrayList numbers = new ArrayList( ); numbers.add( 32 ); numbers.add( 17 ); numbers.add( 6 ); Use trimToSize to trim the capacity of numbers to its current size:

The ArrayList Method TrimToSize Has the Following API