1 /**
 2  * VM Args：-Xms20m -Xmx20m -XX:+HeapDumpOnOutOfMemoryError
 3  */
 4 public class HeapOOM {
 5     static class OOMObject {
 6     }
 7     public static void main(String[] args) {
 8         List<OOMObject> list = new ArrayList<OOMObject>();
 9         while (true) {
10             list.add(new OOMObject());
11         }
12     }
13 }

 1 public class JavaVMStackSOF {
 2     private int stackLength = 1;
 3     public void stackLeak() {
 4         stackLength++;
 5         stackLeak();
 6     }
 7     public static void main(String[] args) throws Throwable {
 8         JavaVMStackSOF oom = new JavaVMStackSOF();
 9         try {
10             oom.stackLeak();//一直入栈不出来...只要代码没有特别复杂,stackoverflow的错误是不会出现的.
11         } catch (Throwable e) {
12             System.out.println("stack length:" + oom.stackLength);
13             throw e;
14         }
15     }
16 }