断点调试时查看一个对象序列化后的字节大小

仅供拷贝，无干货

java.io.ByteArrayOutputStream bos = new java.io.ByteArrayOutputStream();
java.io.ObjectOutputStream out = new java.io.ObjectOutputStream(bos);
out.writeObject(theObject);
System.out.println(bos.toByteArray().length);
out.close();