如何创建对象序列化？ [英] How to create object serialization?

问题描述

代码没有运行，它在线上给出错误java 18 error

the code is not running, its giving error on line "java 18 error"

FileInputStream t=new FileInputStream("f:\\tj.txt");

我尝试过：

What I have tried:

package serial;

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 MainSerial {

	public static void main(String[] args) throws IOException, ClassNotFoundException {
		student x=new student();
		x.name="abc";
		x.address="xyz";
		x.phonenumber="213123";
		FileOutputStream p=new FileOutputStream("d:\\tj.txt");
		ObjectOutputStream pp=new ObjectOutputStream(p);
		pp.writeObject(x);
		
		FileInputStream t=new FileInputStream("d:\\tj.txt");
		
		ObjectInputStream tt=new ObjectInputStream(t);
		student ll=(student) tt.readObject();
		System.out.println(ll.name);
		System.out.println(ll.address);
		System.out.println(ll.phonenumber);
		// TODO Auto-generated method stub

	}

}


"serial class"

package serial;

import java.io.Serializable;

public class student implements Serializable {
	
	String name;
	
	String address;
	
	String phonenumber;

}

推荐答案

如果您说错误是

18：错误：找不到符号



它告诉你它不知道FileInputStream是什么。



首先，摆脱代码顶部的import java.io.whatevers;块并将其替换为一行：

If you're saying that the error is
"18: error: cannot find symbol"

It's telling you that it doesn't know what FileInputStream is.

First, get rid of that block of "import java.io.whatevers;"at the top of your code and replace it with a single line:

import java.io.*;

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