I found java doesn't release original array after being assigned by sublist

memory_leak_by_sublist.java

import java.util.ArrayList;
import java.util.List;


public class SublistMemoryTest {
    public static void main(String[] args) {
        List<Integer> largeList = new ArrayList<>();

        // Measure memory usage before creating the sublist
        long beforeMemory = Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory();
        System.out.println("Memory usage before creating sublist: " + beforeMemory + " bytes");

        for (int i = 0; i < 500; i++) {
            for (int j = 0; j < 1000; j++) {
                largeList.add(i);
            }
            // CHANGE THIS
            largeList = largeList.subList(1, 2);
            // largeList = new ArrayList<>(largeList.subList(1, 2));
        }
        // Measure memory usage after creating the sublist
        long afterMemory = Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory();
        System.out.println("Memory usage after creating sublist: " + afterMemory + " bytes");

        // Calculate memory usage difference
        long memoryUsageDifference = afterMemory - beforeMemory;
        System.out.println("Memory usage difference: " + memoryUsageDifference + " bytes");
    }
}