如何改变矢量到ArrayList的？ [英] How do you change Vector to ArrayList?

问题描述

我正在开发中的Java应用程序，自矢量已经过时了，我需要这种改变使用的ArrayList

I am developing an application in Java and since Vector is obsolete I am required to change this to using ArrayList.

这是有关code需要被更改为的ArrayList ：

This is the relevant code that needs to be changed to ArrayList:

这是豪斯医生类。

public Vector<Vector> getItems() {
    Vector<Vector> data = new Vector<Vector>();
    for (int i = 0; i < _itemList.size(); i++) {
        Vector<String> row = new Vector<String>();
        row.add(_itemList.get(i).getDecription());
        row.add(String.valueOf(_itemList.get(i).getprice()));
        data.add(row);
    }
    return data;
}

这是GUI类：

private void updateView() {

    //Gets Rows and Columns from the House.class
    Vector<Vector> rowData = _listener.getHouse().getItems();
    Vector<String> columnNames = new Vector<String>();
    columnNames.add("Product Name");
    columnNames.add("Product Price(€)");
    //Creates Shopping Cart and sets size + properties
    table1 = new JTable(rowData, columnNames);
    table1.setPreferredScrollableViewportSize(new Dimension(375, 325));
    table1.setFillsViewportHeight(true);
    //Adds ScrollPane to the container and sets the component position to center
    JScrollPane scrollPane = new JScrollPane(table1);
    centerPanel.add(scrollPane, BorderLayout.CENTER);
}

我需要完全停止VECTOR的使用量和使用ArrayList代替。有一个简单的方法是什么？如何取代这个什么方法？

I need to entirely stop the usage of VECTOR and use ArrayList instead. Is there a simple way out? Any ways on how to replace this?

推荐答案

这应该第一个做的。

public List<List<String>> getItems() {
  List<List<String>> data = new ArrayList<ArrayList<String>>();
  for (int i = 0; i < _itemList.size(); i++) {
    List<String> row = new ArrayList<String>();
    row.add(_itemList.get(i).getDecription());
    row.add(String.valueOf(_itemList.get(i).getprice()));
    data.add(row);
  }
  return data;
}

二是少一点微不足道的。你可以开始这样的事情，但我怀疑使用的TableModel 将是向前迈进了一大步。

The second is a little less trivial. You could start with something like this but I suspect using a TableModel would be a good step forward.

private void updateView() {
  //Gets Rows and Columns from the House.class
  List<List<String>> rowData = _listener.getHouse().getItems();
  List<String> columnNames = new ArrayList<String>();
  columnNames.add("Product Name");
  columnNames.add("Product Price(€)");
  //Creates Shopping Cart and sets size + properties
  // **** Will not work - Probably better to use a TableModel.
  table1 = new JTable(rowData, columnNames);
  table1.setPreferredScrollableViewportSize(new Dimension(375, 325));
  table1.setFillsViewportHeight(true);
  //Adds ScrollPane to the container and sets the component position to center
  JScrollPane scrollPane = new JScrollPane(table1);
  centerPanel.add(scrollPane, BorderLayout.CENTER);
}

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