本文是小编为大家收集整理的关于在映射中插入值<K，V>的处理/解决方法，可以参考本文帮助大家快速定位并解决问题，中文翻译不准确的可切换到English标签页查看源文。
问题描述
我正在编写我的第一个应用程序，我正在尝试创建一个可以存储一些信息的地图.
我正在使用 ECLIPSE，但我一直收到同样的错误，但我已经用 Google 搜索(实际上是 DuckDuckGo-ed)并在 StackOverflow 中搜索，但我找不到错误......所以我拼命来到这里.
库已正确导入(因为 ADT 会这样做)，我猜 Oracle 文档没问题，所以... 为什么它不起作用?
我的意思是，这两种方法都不能将键值对插入映射中.
有趣的部分来自于查看错误.
第一个说Syntax error on token ",", { expected after this token
第二个说 Syntax error, insert "}" to complete ClassBody
我开始有点绝望了，我无法让代码更简单！非常感谢！
推荐答案
这里有两个问题.首先你必须把它放到一个方法中，其次你不能使用 [] 语法；你必须使用 Map.put.
public class Data {
public static void main(String[] args) {
Map<String, String> data = new HashMap<String, String>();
data.put("John", "Taxi Driver");
data.put("Mark", "Professional Killer");
}
}
问题描述
I'm programming my first app, and I am trying to create a Map that will store some information.
I'm using ECLIPSE and I keep getting the same error, but I have Googled (actually DuckDuckGo-ed) and search in StackOverflow and I can't find the error... So I've desperately come here.
Libraries are imported correctly (since the ADT does so) and I'm guessing Oracle documentation is okay, so... why isn't it working?
I mean, neither of both methods work to insert a Key-Value pair into the map.
The interesting part comes when looking at the errors.
The first one says Syntax error on token ",", { expected after this token
The second says Syntax error, insert "}" to complete ClassBody
I am beginning to get a bit desperate, I couldn't make the code simpler! Thank you very much!
推荐答案
There are two issues here. First you must put this into a method, and second, you can't use the [] syntax; you must use Map.put.
public class Data {
public static void main(String[] args) {
Map<String, String> data = new HashMap<String, String>();
data.put("John", "Taxi Driver");
data.put("Mark", "Professional Killer");
}
}
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