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import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.util.Date;
public class ObjectIOApp {
public static void main(String args[]) throws IOException, ClassNotFoundException {
File file = new File("test.txt");
FileOutputStream outFile = new FileOutputStream(file);
ObjectOutputStream outStream = new ObjectOutputStream(outFile);
TestClass1 t1 = new TestClass1(true, 9, 'A', 0.0001, "java");
TestClass2 t2 = new TestClass2();
String t3 = "This is a test.";
Date t4 = new Date();
outStream.writeObject(t1);
outStream.writeObject(t2);
outStream.writeObject(t3);
outStream.writeObject(t4);
outStream.close();
outFile.close();
FileInputStream inFile = new FileInputStream(file);
ObjectInputStream inStream = new ObjectInputStream(inFile);
System.out.println(inStream.readObject());
System.out.println(inStream.readObject());
System.out.println(inStream.readObject());
System.out.println(inStream.readObject());
inStream.close();
inFile.close();
file.delete();
}
}
class TestClass1 implements Serializable {
boolean b;
int i;
char c;
double d;
String s;
TestClass1(boolean b, int i, char c, double d, String s) {
this.b = b;
this.i = i;
this.c = c;
this.d = d;
this.s = s;
}
public String toString() {
String r = String.valueOf(b) + " ";
r += String.valueOf(i) + " ";
r += String.valueOf(c) + " ";
r += String.valueOf(d) + " ";
r += String.valueOf(s);
return r;
}
}
class TestClass2 implements Serializable {
int i;
TestClass1 tc1;
TestClass1 tc2;
TestClass2() {
i = 0;
tc1 = new TestClass1(true, 2, 'j', 1.234, "Java");
tc2 = new TestClass1(false, 7, 'J', 2.468, "JAVA");
}
public String toString() {
String r = String.valueOf(i) + " ";
r += tc1.toString() + " ";
r += tc2.toString();
return r;
}
}
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