what is
" The writeObject method must be invoked with the writeObject(name) method on the object passed as an argument. " ?
package zh.codegym.task.task20.task2018;
import java.io.*;
import java.io.Serializable;
/*
找到错误
*/
public class Solution implements Serializable{
public static class A {
protected static String nameA = "A";
public A() {
}
public A(String nameA) {
this.nameA += nameA;
}
}
public class B extends A implements Serializable {
private String nameB;
private void writeObject (ObjectOutputStream oos) throws IOException {
oos.writeObject(nameA);
oos.writeObject(nameB);
oos.defaultWriteObject();
}
private void readObject (ObjectInputStream ois) throws IOException, ClassNotFoundException {
nameA = (String) ois.readObject();
nameB = (String) ois.readObject();
ois.defaultReadObject();
}
public B(String nameA, String nameB) {
super(nameA);
this.nameA += nameA;
this.nameB = nameB;
}
}
public static void main(String[] args) throws IOException, ClassNotFoundException {
ByteArrayOutputStream arrayOutputStream = new ByteArrayOutputStream();
ObjectOutputStream oos = new ObjectOutputStream(arrayOutputStream);
Solution solution = new Solution();
B b = solution.new B("B2", "C33");
System.out.println("nameA: " + b.nameA + ", nameB: " + b.nameB);
oos.writeObject(b);
ByteArrayInputStream arrayInputStream = new ByteArrayInputStream(arrayOutputStream.toByteArray());
ObjectInputStream ois = new ObjectInputStream(arrayInputStream);
B b1 = (B)ois.readObject();
System.out.println("nameA: " + b1.nameA + ", nameB: " + b1.nameB);
}
}
