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What does the method ensureCapacity(int, minCapacity) do in java?
The ensureCapacity(int minCapacity) method of the class java.util.ArrayList increases the capacity of this ArrayList instance, if necessary, to ensure that it can hold at least the number of elements specified by the minimum capacity argument.
Example
import java.util.ArrayList;
public class ArrayListDemo {
public static void main(String args[]) {
ArrayList<Integer> arrlist = new ArrayList<Integer>(5);
arrlist.add(10);
arrlist.add(50);
arrlist.add(30);
arrlist.ensureCapacity(15);
for (Integer number : arrlist) {
System.out.println("Number = " + number);
}
}
}Output
Number = 10 Number = 50 Number = 30
Updated on 25-Feb-2020 10:10:30
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