Read object from a file in Java
Description
The following code shows how to read object from a file.
Example
//w ww . j a v a2 s . co m
import java.io.FileInputStream;
import java.io.ObjectInputStream;
import java.io.Serializable;
import java.util.Date;
public class Main {
public static void main(String[] arguments) {
try {
FileInputStream fi = new FileInputStream("message.obj");
ObjectInputStream oi = new ObjectInputStream(fi);
Message mess = (Message) oi.readObject();
System.out.println("Message:\n");
System.out.println("From: " + mess.from);
System.out.println("To: " + mess.to);
System.out.println("Date: " + mess.when + "\n");
for (int i = 0; i < mess.lineCount; i++)
System.out.println(mess.text[i]);
oi.close();
} catch (Exception e) {
System.out.println("Error " + e.toString());
}
}
}
class Message implements Serializable {
int lineCount;
String from, to;
Date when;
String[] text;
void writeMessage(String inFrom, String inTo, Date inWhen, String[] inText) {
text = new String[inText.length];
for (int i = 0; i < inText.length; i++)
text[i] = inText[i];
lineCount = inText.length;
to = inTo;
from = inFrom;
when = inWhen;
}
}