JAVA-无法添加到HashMap

Question

I am very new to JAVA and I wrote this code: 我是JAVA的新手，我写了这段代码：

Map<String,Integer> map = new HashMap<String,Integer>();
map.add("Key",13);

Why is it giving the error on eclipse: 为什么它会在eclipse上给出错误：

The method add(String, int) is undefined for the type Map<String,Integer>

Answer 1

There is no add method. 没有add方法。 The method you want is put . 您想要的方法被put 。

map.put("Key", 13);