我是Java初學者,並試圖學習FileInputStream
和FileOutputStream
的基礎知識。我能夠成功地將數據寫入文件,但無法讀取它。這是我的代碼。如果我缺少讀取數據的東西,請讓我知道。無法使用ObjectInputStream從txt文件讀取值
Application.java
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectOutputStream;
public class Application {
public static void main(String[] args) throws FileNotFoundException {
try(FileOutputStream fs = new FileOutputStream("testdata.txt")){
ObjectOutputStream os = new ObjectOutputStream(fs);
MathematicalOperation mo = new MathematicalOperation();
os.writeObject(mo);
os.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
ReadingFile.Java
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.ObjectInputStream;
public class ReadDataFromFile {
public static void main(String[] args) throws FileNotFoundException{
try(FileInputStream fi = new FileInputStream("testdata.txt")){
ObjectInputStream oi = new ObjectInputStream(fi);
MathematicalOperation mo= (MathematicalOperation) oi.readObject();
System.out.println(mo);
oi.close();
} catch (IOException | ClassNotFoundException e) {
e.printStackTrace();
}
}
}
你有什麼錯誤戈特...請提及它 –
該文件只包含一行文本,「學習文件流」。 @JafferWilson沒有錯誤,我得到的輸出是MathematicalOperation @ eed1f14 – gowthamjs23