我有一个ArrayList的对象。对象是鲜花。在鲜花列表中添加鲜花后,我想打印出每朵鲜花的名字。每当我添加一朵花,我就会给这朵花命名。假设我加了三朵名为“玫瑰”,“郁金香”和“水仙花”的花。当我运行遍历ArrayList的函数时,我得到的只有三个水仙花。如果我添加五朵花,它会显示五朵花,但所有花都有我添加的最后一朵花的名称。这是我的主类:我的ArrayList的对象不打印出我想要的对象属性
import java.util.Scanner;
import java.util.ArrayList;
public class mainClass {
static ArrayList<flowerClass> flowerPack = new ArrayList<flowerClass>();
public static void main(String[] args){
Scanner input = new Scanner(System.in);
while(true){
System.out.println("1. Add flower to flowerpack.");
System.out.println("2. Display the flowers in the flowerpack.");
int userChoice = input.nextInt();
switch(userChoice){
case 1:
addFlower();
break;
case 2:
displayFlowers();
break;
}
}
}
public static void addFlower(){
Scanner input = new Scanner(System.in);
System.out.println("What is the flower's name?");
String flowerName = input.nextLine();
flowerPack.add(new flowerClass(flowerName));
}
public static void displayFlowers(){
for (Object o: flowerPack){
System.out.println(flowerClass.getName());
}
}
}
这里是我的flowerClass:
public class flowerClass {
public static int numberOfFlowers = 0;
public static String flowerName = null;
static String flowerColor = null;
static int numberThorns = 0;
static String flowerSmell = null;
flowerClass(String desiredName){
flowerName = desiredName;
numberOfFlowers++;
}
public static void setName(String desiredName){
flowerName = desiredName;
}
public static String getName(){
return flowerName;
}
}
我一直在使用对象而不是一个ArrayList的数组尝试。我可以让它显示每个单独的flowerClass对象的唯一地址,但我永远无法成功访问每个对象的flowerName以将其显示给用户。感谢您的任何建议。
从'flowerClass'中的任意位置移除'static'关键字 –
将您的for循环更改为'for(flowerClass o:flowerPack)'并从每一个移除静态e – A4L
可能的重复[在现代语言中,'静态'在Java中意味着什么?](http://stackoverflow.com/questions/2649213/in-laymans-terms-what-does-static-mean-in-java ) – femtoRgon