Java:通过名称调用和访问数组，该名称存储在不同数组或变量内的字符串中

Question

我有多个数组，根据存储在字符串中的用户输入，我需要访问相应的数组。例如，用户输入“/kit food”并按 Enter 键，该字符串就会被子字符串化为“food”。假设我已经有一个名为 food 的数组，并且我想将其中的所有项目打印到控制台中。这是我想要做的示例代码:

String[] food = {"apple","carrot","pickle"};
String[] tools = {"hoe","shovel","rake"};

userInput = "food";   //already sub stringed from "/kit food"

for(String item : userInput){   //I need it to access the array food
    System.out.println(item);
}

这可以做到吗？或者我应该为每个套件手动编写每个 if/else 语句？

Answer 1

使用 Java 7

public static void main(String[] args) {
        String[] food = {"apple", "carrot", "pickle"};
        String[] tools = {"hoe", "shovel", "rake"};

        String userInput = "food";   //already sub stringed from "/kit food"

        Map<String, String[]> map = new HashMap<>();    
        map.put("food", food);
        map.put("tools", tools);

        for (String item : map.get(userInput)) {   //I need it to access the array food
            System.out.println(item);
        }
    }