多维arrayList获取ID并从arrayList中移除整个列表

Question

class Emp {

    String ID, FName, LName, ASalary, StartDate;

    Emp(String _ID, String _FName, String _LName, String _ASalary, String _StartDate) {
        ID = _ID;
        FName = _FName;
        LName = _LName;
        ASalary = _ASalary;
        StartDate = _StartDate;
    }
}

ArrayList< Emp> Record = new ArrayList< Emp>();


 private void btnRemoveActionPerformed(java.awt.event.ActionEvent evt) {                                          
        String ID;

        ID = IDin.getText();
     
        int firstIndex = Record.indexOf(ID);
        Record.remove(firstIndex);
        Display.setText("remove " + ID + " Indext of " + firstIndex);
}

它 returns -1 因为它在 ArrayList 中找不到 ID，我只需要获取 ID 号并删除具有该 ID 号的整个 ArrayList

Answer 1

您可以简单地使用 removeIf 并提供如下谓词：

id = IDin.getText();
record.removeIf(emp -> emp.getId().equals(id)); //add null check if needed

boolean removeIf(Predicate<? super E> filter)

Removes all of the elements of this collection that satisfy the given predicate. Errors or runtime exceptions thrown during iteration or by the predicate are relayed to the caller.

多维arrayList获取ID并从arrayList中移除整个列表

Multidimensional arrayList get ID and remove the entire list from the arrayList

java

arraylist

multidimensional-array