因此,我想使用for-each循环在我的阵列列表中搜索以找到输入的国家的首都,搜索也不敏感。我的其他类别elementslist中的arraylist名称。以下是包括资本在内的国家/地区的代码:
import java.text.*;
/**
* Write a description of class Country here.
*
* @author (your name)
* @version (a version number or a date)
*/
public class Country
{
private String nCountry;
private String Cont;
private int Area;
private double populationNum;
private double GDP;
private String Capital;
public Country (){
nCountry = "Default";
}
public Country (String name, String continent, int area, double population,
double gdp, String capital){
nCountry = name;
Cont = continent;
Area = area;
populationNum = population;
GDP = gdp;
Capital = capital;
}
public String getCountry(){
return nCountry;
}
public String getCapital(){
return Capital;
}
public void setCountry(String name){
nCountry = name;
}
public void setCapital(String capital){
Capital = capital;
}
}
我遇到的麻烦是创建搜索所使用国家首都的面孔循环。这并不多,但这就是我到目前为止的:
public String searchForCapital(String countryName){
Country cap = new Country();
cap = null;
for(Country c : ElementsList){
if(c.getCountry().equals(countryName)){
}
您的for each
是正确的。这是搜索资本的完整功能,请注意,您必须具有elementsList
对象的CC_2数组列表
public String searchForCapital(String countryName) {
for (Country c : elementsList) {
if (c.getCountry().equalsIgnoreCase(countryName)) {
return c.getCapital();
}
}
return null;
}