JVM初体验

1 public class Main {
2     public static void main(String[] args) {
3         List<Demo> list = new ArrayList<>();
4         while(true) {
5             list.add(new Demo());
6         }
7     }
8 }

java.lang.OutOfMemoryError: Java heap space
Dumping heap to java_pid15804.hprof ...
Heap dump file created [28024160 bytes in 0.082 secs]
Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
    at java.util.Arrays.copyOf(Unknown Source)
    at java.util.Arrays.copyOf(Unknown Source)
    at java.util.ArrayList.grow(Unknown Source)
    at java.util.ArrayList.ensureExplicitCapacity(Unknown Source)
    at java.util.ArrayList.ensureCapacityInternal(Unknown Source)
    at java.util.ArrayList.add(Unknown Source)
    at com.qlu.test1.Main.main(Main.java:10)