“java.lang.outofmemoryError:gc overhead limit exceeded”是否表示内存泄漏?

我正在了解有关内存泄漏的更多信息,并尝试以下代码:

我有下面的代码 Exception: java.lang.OutOfMemoryError thrown from the UncaughtExceptionHandler in thread "main"

import com.learn.general.memoryleaks.LeakFactory.Leak;

public class InnerClassMemoryLeakTest {
    static Leak[] leaks = new Leak[100000];

    public static void main(String[] args) {
        while(true) {
            for (int i = 0; i < leaks.length; i++) {
                leaks[i] = new LeakFactory().getLeak();
            }
        }
    }

    private static void createLeak() {
        while(true) {
            for (int i = 0; i < leaks.length; i++) {
                leaks[i] = new LeakFactory().getLeak();
            }
        }
    }
}


import java.util.Calendar;

public class LeakFactory {

    double d = Math.random();
    Calendar calendar = Calendar.getInstance();

    public Leak getLeak(){
        return new Leak();
    }

    public class Leak{
        double d_i = Math.random();
        Calendar calendar_i = Calendar.getInstance();
    }
}

然后我有下面的代码 Exception in thread "main" java.lang.OutOfMemoryError: GC overhead limit exceeded

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

public class ArrayListMemoryLeak {

    public static void main(String[] args) {
        List<Object> calendars = new ArrayList<>();
        int count = 0;
        while(true){
            calendars.add(Calendar.getInstance());
        }
    }
}

问题: 第一种情况下的错误是否表示存在内存泄漏,而第二种情况下则不是?