serialVersionUID 表示的是对象的序列ID,如果我们不指定的话,是JVM自动生成的。在反序列化的过程中,JVM会首先判断serialVersionUID 是否一致,如果不一致,那么JVM会认为这不是同一个对象。 如果我们的实例在后期需要被修改的话,注意一定不要使用默认的serialVersionUID,否则后期class发送变化之后,serialVersionUID也会同样...
serialVersionUIDin the class to track the modifications under a common tag. By default, serialization will automatically computeserialVersionUIDby going through all the fields and methods. That’s why if you try to alter any class variable without manually specifying...
4.1The ObjectStreamClass Class ObjectStreamClass SerialVersionUID package java.io; public class ObjectStreamClass { public static ObjectStreamClass lookup(Class cl); public static ObjectStreamClass lookupAny(Class cl); public String getName(); public Class forClass(); public ObjectStreamField[] get...
importjava.io.FileInputStream;importjava.io.FileOutputStream;importjava.io.IOException;importjava.io.ObjectInputStream;importjava.io.ObjectOutputStream;publicclassSerialVersionUIDTest{publicstaticvoidmain(Stringargs[])throwsIOException,ClassNotFoundException{Lionleo=newLion("roar");// serializeSystem.out.pr...
private static final long serialVersionUID = -8826770719841981391L; private String name; private int age; } Write Java serialization code public class JavaSerializer { public static void main(String[] args) { User user=new User(); user.setAge(18); ...
public class BogusEnumSet { public static void main(String[] args) throws Throwable { // This test depends on the current serialVersionUID of EnumSet, // which may change if the EnumSet class is modified. // The current value is -2409567991088730183L = 0xde8f7eadb5012fb9L // If the va...
Here is an example of usingserialverwith a class calledBaz: > serialver Baz > Baz: static final long serialVersionUID = 10275539472837495L; Simply copy the returned line with the version ID and paste it into your code. (On a Windows box, you can run that utility with the- showoption to...
How do I get the serialVersionUID of an array class? Run the serialver tool, supplying the name of the class, as shown in the example that follows: serialver "[Ljava.lang.String;" Why isUTFDataFormatExceptionthrown byDataOutputStream.writeUTF()when serializing a String?
.No,you must not only declare it but also maintain it.So most important part is maintaining serialVersionUID otherwise every thing will run without any exceptions.You should change serialVersionUID when there is some change in the definition of data stored in the class for example data type ...
00 0A: Length of the class name. 53 65 72 69 61 6c 54 65 73 74:SerialTest, the name of the class. 05 52 81 5A AC 66 02 F6:SerialVersionUID, the serial version identifier of this class. 0x02: Various flags. This particular flag says that the object supports serialization. ...