我很清楚这个错误，但这是我第一次被难住。我知道我不能从主方法调用非静态变量，但这很令人困惑。也许你能帮忙？该错误显示在 addInv(1); 行...
代码:
import java.io.*;
import java.util.*;
import javax.swing.*;
public class item
{
public static int attack, defense;
public static ArrayList<String> arr;
public static String name, desc, typeOf, attackAdd, defenseAdd, canSell, canEat,earnedCoins,canEquip;
String stats[];
public static void main(String args[])
{
addInv(1);
}
public void addInv(int e) {
String iname = getItem(1)[0];
String idesc = getItem(1)[1];
int itypeOf = Integer.parseInt(getItem(1)[2]);
int iattackAdd = Integer.parseInt(getItem(1)[3]);
int idefenseAdd = Integer.parseInt(getItem(1)[4]);
boolean icanSell = Boolean.parseBoolean(getItem(1)[5]);
boolean icanEat = Boolean.parseBoolean(getItem(1)[6]);
int iearnedCoins = Integer.parseInt(getItem(1)[7]);
attack = attack + iattackAdd;
defense = defense + idefenseAdd;
System.out.println("You picked up: " + iname);
arr.add("dan");
System.out.println("Description: " + idesc);
}
// Types of Items
// 0 - Weapon
// 1 - Food
// 2 - Reg Item
// 3 - Helmet
// 4 - Armor Legs
// 5 - Chest Armor
// 6 - Shield
public String[] getItem(int e) {
String[] stats = new String[7];
String name = "Null";
String desc = "None";
String typeOf = "0";
String attackAdd = "0";
String defenseAdd = "0";
String canSell = "true";
String canEat = "false";
String earnedCoins = "0";
if (e == 1) {
name = "Pickaxe";
desc = "Can be used to mine with.";
typeOf = "2";
attackAdd = "2";
earnedCoins = "5";
}
return new String[] { name, desc, typeOf, attackAdd, defenseAdd, canSell, canEat, earnedCoins};
}
}
谢谢。
最佳答案
您不能从静态方法调用非静态方法。因此，要么将 addInv 设为静态:
public class Item {
...
public static void main(String args[]) {
addInv(1);
}
public static void addInv(int e) {
...
}
public static String[] getItem(int e) {
...
}
}
但是将所有这些方法设为静态可能不是一个合适的设计，您可能更喜欢在 main 中使用 Item 实例:
public class Item {
...
public static void main(String args[]) {
Item item = new Item();
item.addInv(1);
}
}
顺便说一句，我并不是有意无礼，但你应该认真研究你的(糟糕的)代码格式和约定，无论是为了读者还是你自己。
另请参阅
关于Java 非静态方法 addInv(int) 无法从静态上下文中引用，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/3272624/