12.3 Object Serialization in java | Serializable Interface
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- Опубліковано 19 жов 2024
- The String class and all the wrapper classes implements java.io.Serializable interface by default. Deserialization is the reverse operation of serialization.
Serialization in java is a mechanism of writing the state of an object into a byte stream.
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man, thanks for this material, the way you explained, the sequence of each idea was just perfect.
Very useful lecture for me...Thank you sir, I'm following you from 3 years.
the way of teaching via is code is really understandable more than read a theory in 30 minutes,thanks i will continue to watch ur videos..
You and Durga sir are wizards in JAVA!!!
Java Brains wants to know your location
At 2:15, you mentioned, Save obj1 = obj will create a copy of obj. It's not correct. obj2 will point to the same object as obj, it is just a reference; no copying occurs here.
You shouldn't keep saying the "NULL" object has a value of zero -- it is simply null. There is a big difference in these two things.
Yes thank you CS 101
It is strongly recommended that all serializable classes explicitly declare serialVersionUID values, since the default serialVersionUID computation is highly sensitive to class details that may vary depending on compiler implementations, and can thus result in unexpected InvalidClassExceptions during deserialization...
how to do so?
private static final long serialVersionUID = 4L; insinde the class with implements serialization
Thank you Telusko. You are really good teacher.
I always see your tutorials.
in this example are we saving the object over a network???????
Not exactly, Here we are saving the object in a text file(Serializing).
After saving the file, you can transfer the file (containing our object) over network.
After receiving the file from the other end of network, we can read the object(De-Serialize) from the received file.
In this particular scenario, both serialization and de-serialization are done in the same machine(without our network step involved).
Excellent Example, just Legend!
best explanation. Thank you
Super explanation, thanks for your time!
great video. I just wanted to ask what is the difference between ObjectOutputStream and DataOutputStream?
Thank you Telusko for the amazing explanation. I just got a doubt while watching this video. What is the difference between saving objects and saving data? I'm curious to know the difference between data and objects.
Hi John, can you please make a video about serialization, I don't understand a thing about it and the tutorials on youtube are hard to understand, they're old too. I hope you see this, thanks a lot, you've helped me a lot in java
He haven't closed the objectoutput stream
Thank you for this very useful video!
excellent sessio. one question, will object code also get serialized and deserialized or only variable values?
such a badass explaination
you r my best teacher
Can you please explain Serialization with static variables and transient? It will be better.
Thank you... concept got cleared
You are a god.
Simple + effective
great video
great tutorial man
super sir well explained
Awesome video man. Keep it up.
This is an amazing tutorial, exactly what I was looking for... thanks a lot bro
Well done ! Keep on.
Great tutorial.......Thanks
The best✨
Is that sir updatable? Like mysql, excel , word ?
Thank you
does memory is created for obj1 in heap when we say Save obj1 = (Save) ois.readObject();
Awesome!!! Thank you!
can we you any marker interface interchangable ,for example instead of serializable can we use clonable interface is it posssible
Sir in mine.. i can't see my saved file obj.txt..
Actually I searched it. But file is not saved
great video! just what I was looking for
How do I find the previous video? 🥺
Obj1=obj will not copy the values
It will copy the reference of obj into obj1
Clear your concepts first
It will copy bro. Just code it and check
@@kumarans8543 class temp
{ int x,y;
temp()
{
x=0;y=0;
}
temp(int x,int y)
{
this.x=x;
this.y=y;
}
}
class Ref
{
public static void main(String[] args)
{
temp t1=new temp(100,200);
temp t2=new temp();
System.out.println("t1 values
X ="+t1.x+" \tY = "+t1.y);
System.out.println("t2 values
X ="+t2.x+" \tY = "+t2.y);
t2=t1; //if it will copy objects then changes made to any of the objects will not reflect the other object
System.out.println("After t1 values
X ="+t1.x+" \tY = "+t1.y);
System.out.println("After t2 values
X ="+t2.x+" \tY = "+t2.y);
t2.x=400;
t2.y=500;
System.out.println("NOW t1 values
X ="+t1.x+" \tY = "+t1.y);
System.out.println("NOW t2 values
X ="+t2.x+" \tY = "+t2.y);
}
}
@@kumarans8543 Just copy and run my code
It will not copy values bro, it will copy reference of the object. That's why changes made reflects on both objects
@@m3r5 copying reference means that they point to the same object na? thats what i meant by 'copying the value' , It's like same value referred by diff objects
yeah bro exactly !!!
nicely explained.
nice and simple.
Thanks,helped a lot
Nice workdone .. Thank you...
where is serialization used other than file handling
where
Hello i did a game in gameguru but i can*t save it.How can i do a savegame file becasue there are not a fucntion to save the file
Why a dto needs to be serialized??
Thanks dude
Can you please explain about serialization version id it will be better.
This time you haven't explain-
why we need it ?
What are is uses ?
amazing
Why (save) is needed?
Why r u change in fos to oos
Thank you!
chyba sam zaczne robić tutoriale, nie wyrabiam już z tym akcentem
what is the diff b/w object serialization and object cloning?
dominic xavier
Object cloning is creating a copy of an object and you don't store it and use right way in the code .
Object serialisation is copying and also storing object ( may be in a file or database or over a network ) and then you can retrieve at later point of time . It is not possible in case of cloning
Exception in thread "main" java.lang.ClassCastException: java.base/java.lang.String cannot be cast to rak
at Main.main(Main.java:23)
help me out with @Telusko Learning
You simply can't convert a string directly to Tak object.
Try to implement the toString() in the Rak class
Thank youuuuuuuuu
Don't you have to close these files?
Thankss!!
The default value for an object is null. But you are mentioning it as 0
Integer default is null
int default is 0
program show unexpected output like "serialdemo@e9e54ce",serialdemo is name of my serializable class
Why typevasting in save?
you are explicitly converting it
The explanation is vague
Need to work on accent perhaps.
Too fast explanation. Hard to understand words.
So many mistakes in 4 minutes :(
Cant understand
I know that you love sound of your voice, but you do the presentation for me, so get to the point, and skip the hay.
program show unexpected output like "serialdemo@e9e54ce",serialdemo is name of my serializable class
Thank you!
program show unexpected output like "serialdemo@e9e54ce",serialdemo is name of my serializable class
+Anshu Yadav I know its too late, anyway when you simply try to display an object it will be in the format "type@address" to represent the object in string we have to override the toString method of Object class. In this case the toString method will be as follow..
@Override
public String toString() {
return "Save [i=" + i + "]";
}
Note: it should be implemented in the class Save