Predict the Output
Source files are here: AspectJExample3src.zip. If you need instructions on what do with these files, try here.
Have a look at the following Die class and the associated Main.main() method that serializes the Die.
Die class
package ex3;
public class Die {
int faceValue;
public Die() {
roll();
}
public int roll() {
int nextValue = (int) ((Math.random() * 6) + 1);
setFaceValue(nextValue);
return getFaceValue();
}
public int getFaceValue() {
return faceValue;
}
public void setFaceValue(int faceValue) {
this.faceValue = faceValue;
}
}Main class
package ex3;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.Closeable;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
public class Main {
public static void main(String[] args) throws IOException,
ClassNotFoundException {
Die d = new Die();
int faceValue = d.getFaceValue();
ByteArrayOutputStream baos = serializeObject(d);
Die retrievedDie = deserializeObject(baos);
if (retrievedDie.getFaceValue() != faceValue) {
System.out.printf("Expected %d, but found %d\n", faceValue,
retrievedDie.getFaceValue());
} else {
System.out.printf("Serialization successful\n");
}
}
private static ByteArrayOutputStream serializeObject(Die d)
throws IOException {
ByteArrayOutputStream baos = null;
ObjectOutputStream oos = null;
try {
baos = new ByteArrayOutputStream(1024);
oos = new ObjectOutputStream(baos);
oos.writeObject(d);
} finally {
close(oos);
close(baos);
}
return baos;
}
private static Die deserializeObject(ByteArrayOutputStream baos)
throws IOException, ClassNotFoundException {
ByteArrayInputStream bais = null;
ObjectInputStream ois = null;
try {
bais = new ByteArrayInputStream(baos.toByteArray());
ois = new ObjectInputStream(bais);
return (Die) ois.readObject();
} finally {
close(ois);
close(bais);
}
}
private static void close(Closeable os) {
if (os != null) {
try {
os.close();
} catch (IOException e) {
// ignore e on close
}
}
}
}Assignment: Predict the Output
Given these 2 classes, predict the output. Please do so before continuing.
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