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我有一個關於我正在處理的數據結構的項目。我有一個LinkedList,我需要能夠將對象數據保存到文本文件中將java對象寫入CSV文件
「創建一個文本文件,它是姓氏,名字和電子郵件地址的列表。您可以使用CSV或任何其他分隔符「
當我嘗試保存對象數據我得到這個‘¬í牛逼約翰’,而不僅僅是‘約翰’
我的類(主要和學生,和電子郵件)實現Serializable
public class Main implements Serializable
{
public static void main(String[] args) throws IOException
{
Date date = new Date();
Email e1 = new Email("[email protected]");
Email e2 = new Email("[email protected]");
Email e3 = new Email("[email protected]");
Student s1 = new Student("John", "Snow", e1);
Student s2 = new Student("Shiba", "Inu", e2);
Student s3 = new Student("Vern", "Vern", e3);
Student s4 = new Student("Professor", "Messer", new Email("[email protected]"));
ListInterface<Student> linkedList = new LinkedList<Student>();
linkedList.add(s1, 2); //should be pos 3
linkedList.add(s2, 3); //should be pos 4
linkedList.add(s3, 1); // should be pos 2
linkedList.add(s4, 1); //should be pos 1
System.out.println(linkedList);
try
{
FileOutputStream fos = new FileOutputStream("students.txt");
ObjectOutputStream output = new ObjectOutputStream(fos);
output.writeObject(s1.getfirstName());
output.close();
fos.close();
System.out.println("Data saved in /file/students.txt");
}
catch (IOException exc)
{
System.out.println("Failed to write to file!");
exc.printStackTrace();
}
}
}
謝謝!
簡短的回答是,你不想使用'ObjectOutputStream' –
這是20分鐘內該csv話題的第二個問題。是否有主要作業或測試運行? – AlexWien