在Groovy与Java中映射自定义键

// 创建一个空的Map
def myMap = [:]

// 添加键值对
myMap['key1'] = 'value1'
myMap['key2'] = 'value2'

// 获取值
def value = myMap['key1']

// 遍历Map
myMap.each { key, value ->
    println("$key: $value")
}

// 导入Map类
import java.util.Map;
import import java.util.HashMap;

// 创建一个空的Map
Map<String, String> myMap = new HashMap<>();

// 添加键值对
myMap.put("key1", "value1");
myMap.put("key2", "value2");

// 获取值
String value = myMap.get("key1");

// 遍历Map
for (Map.Entry<String, String> entry : myMap.entrySet()) {
    String key = entry.getKey();
    String value = entry.getValue();
    System.out.println(key + ": " + value);
}