ObjectOutputStream的writeObject()方法

Product类

import java.io.Serializable;

public class Product implements Serializable{
	private int ID;
	private String name;
	private String categories;
	private double price;
	public Product() {
		super();
		// TODO 自动生成的构造函数存根
	}
	public Product(int iD, String name, String categories, double price) {
		super();
		ID = iD;
		this.name = name;
		this.categories = categories;
		this.price = price;
	}
	public int getID() {
		return ID;
	}
	public void setID(int iD) {
		ID = iD;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getCategories() {
		return categories;
	}
	public void setCategories(String categories) {
		this.categories = categories;
	}
	public double getPrice() {
		return price;
	}
	public void setPrice(double price) {
		this.price = price;
	}
	@Override
	public String toString() {
		return "产品ID：" + this.ID + "\n产品名称" + this.name + "\n产品属性：" + this.categories + "\n产品价格：" + this.price;
	}
	

}

Test类

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;

public class Test {

	public static void main(String[] args) {
		Product iphone = new Product(123,"iphone","telephone",4888.0);
		Product ipad = new Product(234,"ipad","computer",5088.0);
		Product macbook = new Product(345,"macbook","computer",10688.0);
		Product iwatch = new Product(256,"iwatch","watch",4799.0);
		try {
			FileOutputStream fos1 = new FileOutputStream("list.txt");
			ObjectOutputStream oos1 = new ObjectOutputStream(fos1);
			FileInputStream fis1 = new FileInputStream("list.txt");
			ObjectInputStream ois1 = new ObjectInputStream(fis1);
			oos1.writeObject(iphone);
			oos1.writeObject(ipad);
			oos1.writeObject(macbook);
			oos1.writeObject(iwatch);
			oos1.flush();
			Product tem1 = (Product)ois1.readObject();
			System.out.println(tem1);
			Product tem2 = (Product)ois1.readObject();
			System.out.println(tem2);
			Product tem3 = (Product)ois1.readObject();
			System.out.println(tem3);
			Product tem4 = (Product)ois1.readObject();
			System.out.println(tem4);
			fos1.close();
			oos1.close();
			fis1.close();
			ois1.close();
		} catch (FileNotFoundException e) {
			// TODO 自动生成的 catch 块
			e.printStackTrace();
		}catch (IOException e) {
			// TODO 自动生成的 catch 块
			e.printStackTrace();
		} catch (ClassNotFoundException e) {
			// TODO 自动生成的 catch 块
			e.printStackTrace();
		}
		
		
		
		
	}

}

ObjectOutputStream的writeObject()方法为什么不会像FileOutputStream的write()方法一样会让用户选择是覆盖还是在原内容后面续写？API里没看到相关的方法，ObjectOutputStream中有类似的方法吗？