由于题目中给出的OOM,java中OOM又分很多类型;比如:堆溢出(“java.lang.OutOfMemoryError: Java heap space”)、永久带溢出(“java.lang.OutOfMemoryError:Permgen space”)、不能创建线程(“java.lang.OutOfMemoryError:Unable to create new native thread”)等很多种情况。
本文主要是分析堆溢出对应用带来的影响。
先说一下答案,答案是还能运行。
代码如下:
publicclassJvmThread{
publicstaticvoidmain(String[] args){ new Thread(() -> { List<byte[]> list = new ArrayList<byte[]>(); while (true) { System.out.println(new Date().toString() + Thread.currentThread() + '=='); byte[] b = newbyte[1024 * 1024 * 1]; list.add(b); try { Thread.sleep(1000); } catch (Exception e) { e.printStackTrace(); } } }).start();
Wed Nov 07 14:42:18 CST 2018Thread[Thread-1,5,main]== Wed Nov 07 14:42:18 CST 2018Thread[Thread-0,5,main]== Wed Nov 07 14:42:19 CST 2018Thread[Thread-1,5,main]== Wed Nov 07 14:42:19 CST 2018Thread[Thread-0,5,main]== Exception in thread 'Thread-0' java.lang.OutOfMemoryError: Java heap space at com.gosaint.util.JvmThread.lambda$main$0(JvmThread.java:21) at com.gosaint.util.JvmThread$$Lambda$1/521645586.run(Unknown Source) at java.lang.Thread.run(Thread.java:748) Wed Nov 07 14:42:20 CST 2018Thread[Thread-1,5,main]== Wed Nov 07 14:42:21 CST 2018Thread[Thread-1,5,main]== Wed Nov 07 14:42:22 CST 2018Thread[Thread-1,5,main]==