Having difficulties getting console output Followed this youtube tutorial: https://www.youtube.com/watch?v=DfbFTVNfkeI and got exception error while trying to run ===================================================================== package Deserialization; import java.io.*; public class Main { public static void main(String[] args) throws IOException, ClassNotFoundException { // Deserialization = The reverse of converting a byte stream into an object. // (Thin of this as if you are loading a saved file) // steps to Deserialize // ----------------------------------------------------------------- // 1. Declare your object (don't instantiate) // 2. Your class should implement Serializable interface // 3. Add import java.io.Serializable; // 4. FileInputStream fileIn = new FileInputStream(file path); // 5. ObjectInputStream in = new ObjectInputStream(fileIn); // 6. objectNam = (Class) in.readObject(); // 7. in.close(); fileIn.close(); // ------------------------------------------------------------------ // important notes 1. children classes of a parent class that implements Serializable will do so as well // 2. static fields are not serialized (they belong to the class, not an individual object) // 3. Fields declared as "transient" aren't serialized, they're ignored // 4. the class's definition ("class file") itself is not recorded, cast it as the object type // 5. serialVersionUID is a unique version ID User user = null; FileInputStream fileIn = new FileInputStream("C:\\Users\\mckun\\eclipse-workspace\\Serializer\\UserInfo.ser"); ObjectInputStream in = new ObjectInputStream(fileIn); user = (User) in.readObject(); in.close(); fileIn.close(); System.out.println(user.name); System.out.println(user.password); user.sayHello(); } } ======================================================================== package Deserialization; import java.io.Serializable; public class User implements Serializable{ String name; String password; public void sayHello() { System.out.println("Hello "+ name); } }
Having difficulties getting console output
Followed this youtube tutorial: https://www.youtube.com/watch?v=DfbFTVNfkeI
and got exception error while trying to run
=====================================================================
package Deserialization;
import java.io.*;
public class Main {
public static void main(String[] args) throws IOException, ClassNotFoundException {
// Deserialization = The reverse of converting a byte stream into an object.
// (Thin of this as if you are loading a saved file)
// steps to Deserialize
// -----------------------------------------------------------------
// 1. Declare your object (don't instantiate)
// 2. Your class should implement Serializable interface
// 3. Add import java.io.Serializable;
// 4. FileInputStream fileIn = new FileInputStream(file path);
// 5. ObjectInputStream in = new ObjectInputStream(fileIn);
// 6. objectNam = (Class) in.readObject();
// 7. in.close(); fileIn.close();
// ------------------------------------------------------------------
// important notes 1. children classes of a parent class that implements Serializable will do so as well
// 2. static fields are not serialized (they belong to the class, not an individual object)
// 3. Fields declared as "transient" aren't serialized, they're ignored
// 4. the class's definition ("class file") itself is not recorded, cast it as the object type
// 5. serialVersionUID is a unique version ID
User user = null;
FileInputStream fileIn = new FileInputStream("C:\\Users\\mckun\\eclipse-workspace\\Serializer\\UserInfo.ser");
ObjectInputStream in = new ObjectInputStream(fileIn);
user = (User) in.readObject();
in.close();
fileIn.close();
System.out.println(user.name);
System.out.println(user.password);
user.sayHello();
}
}
========================================================================
package Deserialization;
import java.io.Serializable;
public class User implements Serializable{
String name;
String password;
public void sayHello() {
System.out.println("Hello "+ name);
}
}
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