由java.io.EOFException引起的错误异常

Question

我遇到了问题，我的代码告诉我：

Exception caused by java.io.EOFException

这个错误是什么意思？我想导入一个对象 如果一个人输入了错误的名字，那么必须重复它而不是 表示此错误

代码

public List<order> importorders(String dataName)
List<order> orders;
    FileInputStream fileInputStream = null;
    try {
        fileInputStream = new FileInputStream(dataName);
    } catch (FileNotFoundException e) {
        throw new RuntimeException("Can Not find " + dataName + "' not read!", e);
    }
    ObjectInputStream objectInputStream = null;
    try {
        objectInputStream = new ObjectInputStream(fileInputStream);
    } catch (IOException e) {
        throw new RuntimeException("Can Not Create ObjectInputStream", e);
    }