[Java] Strong Reference vs Weak Reference

import java.lang.ref.SoftReference;
import java.lang.ref.WeakReference;
import java.util.LinkedList;
import java.util.List;

public class Main {
	private static class BigData {
		private int[] array = new int[2500]; //10000byte, 10K
	}

	private static class ReferenceTest {
		private List<WeakReference<BigData>> weakRefs = new LinkedList<>();
		private List<SoftReference<BigData>> softRefs = new LinkedList<>();
		private List<BigData> strongRefs = new LinkedList<>();

		public void weakReferenceTest() {
			try {
				for (int i = 0; true; i++) {
					weakRefs.add(new WeakReference<>(new BigData()));
				}
			} catch (OutOfMemoryError ofm) { // weak일 경우 out of memory 발생 하지 않는다.
				System.out.println("out of memory!");
			}
		}

		public void softReferenceTest() {
			try {
				for (int i = 0; true; i++) {
					softRefs.add(new SoftReference<>(new BigData()));
				}
			} catch (OutOfMemoryError ofm) { // weak일 경우 out of memory 발생 하지 않는다.
				System.out.println("out of memory!");
			}
		}

		public void strongReferenceTest() {
			try {
				for (int i = 0; true; i++) {
					strongRefs.add(new BigData());
				}
			} catch (OutOfMemoryError ofm) { // Strong일 경우 out of memory 발생
				System.out.println("out of memory!");
			}
		}
	}

	public static void main(String[] args) {
		System.out.println("실행");

		ReferenceTest test = new ReferenceTest();
		// test.weakReferenceTest();
		test.softReferenceTest();
		// test.strongReferenceTest();

		System.out.println("종료");
	}
}

https://ktko.tistory.com/entry/%EC%9E%90%EB%B0%94-%EA%B0%95%ED%95%9C%EC%B0%B8%EC%A1%B0Strong-Reference%EC%99%80-%EC%95%BD%ED%95%9C%EC%B0%B8%EC%A1%B0Weak-Reference

자바 강한참조(Strong Reference)와 약한참조(Weak Reference)