Question

我想使用已提供的2D字符串数据数组创建Owners及其属性的数组列表。我不知道如何转换字符串以使它们成为所有者列表。我需要首先检查所有者列表是否为空，如果是，请将所有者名称添加到列表中。

import java.util.ArrayList;

import javax.swing.JOptionPane;
public class PropertyTest {

public static void main(String[] args) {
    boolean present = true;
    ArrayList <Owner> ownerList = new ArrayList <Owner>();

    String dataArray[][] = {{"Jones","Commercial","123 Mitchell","Arlington","Texas","76019","120000", "sales", "21000"},
                            {"Smith","Residential","61 Bose Lane","Dallas","Texas","75002","310000", "65656"},
                            {"Jones","Commercial","2500 West Seventh St"," Fort Worth","Texas","76015","575000","food", "15750"},
                            {"Smith","Commercial","1225 Green Rd","Euless","Texas","76000","215500","entertainment","9500"},
                            {"Jones","Residential","5214 Linda Lane","Houston","Texas","77700","195775", "98541"}};

Answer 1

此代码将帮助您获得正确的输出。如果我以这个字符串数组为例：java

public <T> List<T> twoDArrayStringToList(T[][] dataArray) {
    List<T> list = new ArrayList<T>();
    for (T[] array : dataArray) {
        list.addAll(Arrays.asList(array));
    }
    return list;
}
public static void main(String args[]){

     String dataArray[][] = {{"Jones","Commercial","123 Mitchell","Arlington","Texas","76019","120000", "sales", "21000"},
             {"Smith","Residential","61 Bose Lane","Dallas","Texas","75002","310000", "65656"},
             {"Jones","Commercial","2500 West Seventh St"," Fort Worth","Texas","76015","575000","food", "15750"},
             {"Smith","Commercial","1225 Green Rd","Euless","Texas","76000","215500","entertainment","9500"},
             {"Jones","Residential","5214 Linda Lane","Houston","Texas","77700","195775", "98541"}};

     System.out.println(twoDArrayStringToList(dataArray));

}

[Jones，Commercial，123 Mitchell，Texas，Arlington，76019，120000，sales，21000，Smith，Residential，61 Bose Lane，Dallas，Texas，75002，310000，65656，Jones，Commercial，2500 West Seventh St，德克萨斯州沃思堡，76015，575000，食品，15750，史密斯，商业，1225 Green Rd，Euless，德克萨斯州，76000，215500，娱乐，9500，琼斯，住宅，5214 Linda Lane，休斯敦，得克萨斯州，77700，195775，98541 ]

Answer 2

我相信这个功能可以帮到你

 public String[] addString (String[] a , String c){

    List<String> list = new ArrayList<String>();
    if (a == null){

        list.add(c);

        String[] b = new String[list.size()];

        for (int j = 0 ; j<list.size() ; j++){
            b[j] = list.get(j);
        }
        return b;

    }else {
        for (int i = 0 ; i<a.length ; i++) {
            list.add(a[i]);
        }
        list.add(c);

        String[] b = new String[list.size()];

        for (int j = 0 ; j<list.size() ; j++){
            b[j] = list.get(j);
        }

        return b;

    }



}

使用for（）添加数组

将字符串数组元素插入列表

2 个答案: